/* ==========================================================================
   Tureo — Interface de test du modèle Reo Tahiti
   Design inspiré par Claude, ChatGPT et Gemini
   Light + Dark mode · Mobile-first
   ========================================================================== */

/* --------------------------------------------------------------------------
   Tokens
   -------------------------------------------------------------------------- */
:root {
    /* Marque — mauve polynésien */
    --brand-50:  #F5F1FD;
    --brand-100: #E9DFFC;
    --brand-200: #D4C1F8;
    --brand-300: #B89AF0;
    --brand-400: #9B7DD8;
    --brand-500: #7E5FC8;
    --brand-600: #6D49B8;
    --brand-700: #553494;
    --brand-800: #3F2570;
    --brand-900: #2A1850;

    --accent-coral: #C7669E;
    --accent-gold:  #F5C04A;
    --accent-teal:  #2FB5A5;

    /* Neutres chauds (light) */
    --gray-50:  #FAFAF8;
    --gray-100: #F4F3EF;
    --gray-150: #EDECE6;
    --gray-200: #E4E2DA;
    --gray-300: #D3D0C5;
    --gray-400: #A8A49A;
    --gray-500: #807C72;
    --gray-600: #5E5B54;
    --gray-700: #403E39;
    --gray-800: #2A2926;
    --gray-900: #18171A;

    /* Sémantique (light) */
    --bg:             var(--gray-50);
    --bg-elev:        #FFFFFF;
    --bg-sidebar:     #F7F5F1;
    --bg-chat:        #FAFAF8;
    --bg-input:       #FFFFFF;
    --bg-hover:       rgba(0, 0, 0, 0.035);
    --bg-active:      rgba(109, 73, 184, 0.08);
    --bg-code:        #F4F2EC;
    --bg-code-block:  #1E1B29;
    --bg-user-msg:    var(--brand-600);
    --bg-source:      #FFFFFF;
    --bg-overlay:     rgba(20, 18, 28, 0.45);

    --text:           #1A181C;
    --text-2:         #4A4751;
    --text-3:         #7A7680;
    --text-4:         #ADA9B3;
    --text-inverse:   #FFFFFF;
    --text-link:      var(--brand-600);

    --border:         #E8E5DD;
    --border-strong:  #D8D4CB;
    --border-subtle:  #EFEDE6;

    --focus-ring:     0 0 0 3px rgba(109, 73, 184, 0.22);
    --shadow-xs:      0 1px 2px rgba(18, 15, 30, 0.04);
    --shadow-sm:      0 1px 3px rgba(18, 15, 30, 0.06), 0 1px 2px rgba(18, 15, 30, 0.04);
    --shadow-md:      0 4px 12px rgba(18, 15, 30, 0.08), 0 2px 4px rgba(18, 15, 30, 0.04);
    --shadow-lg:      0 16px 40px rgba(18, 15, 30, 0.12), 0 4px 12px rgba(18, 15, 30, 0.06);
    --shadow-xl:      0 24px 60px rgba(18, 15, 30, 0.18), 0 8px 20px rgba(18, 15, 30, 0.08);

    /* Rayons */
    --r-xs: 6px;
    --r-sm: 10px;
    --r-md: 14px;
    --r-lg: 18px;
    --r-xl: 24px;
    --r-full: 999px;

    /* Typo */
    --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    --font-serif: "Lora", Georgia, serif;
    --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;

    /* Transitions */
    --t-fast:  120ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-med:   220ms cubic-bezier(0.4, 0, 0.2, 1);
    --t-slow:  360ms cubic-bezier(0.4, 0, 0.2, 1);

    /* Layout */
    --sidebar-w: 272px;
    --sidebar-w-collapsed: 0px;
    --composer-max-w: 760px;
    --content-max-w: 780px;
    --topbar-h: 56px;
}

/* Dark — mauve profond */
body.dark,
body.dark-mode {
    --bg:             #121015;
    --bg-elev:        #1A1720;
    --bg-sidebar:     #17141C;
    --bg-chat:        #121015;
    --bg-input:       #1E1A26;
    --bg-hover:       rgba(255, 255, 255, 0.045);
    --bg-active:      rgba(155, 125, 216, 0.14);
    --bg-code:        #24202C;
    --bg-code-block:  #0D0B12;
    --bg-user-msg:    #3F2570;
    --bg-source:      #1E1A26;
    --bg-overlay:     rgba(0, 0, 0, 0.65);

    --text:           #EDEAF1;
    --text-2:         #B9B4C2;
    --text-3:         #8A8595;
    --text-4:         #5F5A6A;
    --text-link:      #B89AF0;

    --border:         #2A2634;
    --border-strong:  #3A3447;
    --border-subtle:  #221E2C;

    --shadow-sm:      0 1px 3px rgba(0, 0, 0, 0.35);
    --shadow-md:      0 4px 12px rgba(0, 0, 0, 0.45);
    --shadow-lg:      0 16px 40px rgba(0, 0, 0, 0.55);
    --shadow-xl:      0 24px 60px rgba(0, 0, 0, 0.7);
    --focus-ring:     0 0 0 3px rgba(184, 154, 240, 0.32);
}

/* --------------------------------------------------------------------------
   Reset
   -------------------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; }
html { font-size: 16px; text-rendering: optimizeLegibility; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    font-size: 15px;
    line-height: 1.55;
    overflow: hidden;
    transition: background-color var(--t-med), color var(--t-med);
}
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }
input, textarea, select { font: inherit; color: inherit; }
a { color: var(--text-link); text-decoration: none; }
a:hover { text-decoration: underline; }

/* Scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--border-strong) transparent; }
*::-webkit-scrollbar { width: 8px; height: 8px; }
*::-webkit-scrollbar-track { background: transparent; }
*::-webkit-scrollbar-thumb { background: var(--border-strong); border-radius: 4px; border: 2px solid transparent; background-clip: padding-box; }
*::-webkit-scrollbar-thumb:hover { background: var(--text-4); background-clip: padding-box; border: 2px solid transparent; }

/* Focus visible */
:focus-visible { outline: none; box-shadow: var(--focus-ring); border-radius: var(--r-xs); }
button:focus-visible, a:focus-visible { outline: none; box-shadow: var(--focus-ring); }

/* Kbd */
kbd, .kbd-hint {
    font-family: var(--font-mono);
    font-size: 10.5px;
    padding: 2px 6px;
    border-radius: 4px;
    background: var(--bg-hover);
    color: var(--text-3);
    border: 1px solid var(--border);
    letter-spacing: 0;
}

/* --------------------------------------------------------------------------
   App layout
   -------------------------------------------------------------------------- */
.app {
    display: grid;
    grid-template-columns: var(--sidebar-w) 1fr;
    height: 100vh;
    height: 100dvh;
    transition: grid-template-columns var(--t-med);
}
.app.sidebar-collapsed {
    grid-template-columns: 0px 1fr;
}

/* --------------------------------------------------------------------------
   Sidebar
   -------------------------------------------------------------------------- */
.sidebar {
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    min-width: 0;
    height: 100%;
    overflow: hidden;
    transition: transform var(--t-med);
    position: relative;
    z-index: 20;
}
.app.sidebar-collapsed .sidebar {
    transform: translateX(-100%);
}

.sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    padding: 14px 12px 10px;
    flex-shrink: 0;
}
.brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-weight: 700;
    padding: 4px 8px;
    border-radius: var(--r-sm);
}
.brand:hover { text-decoration: none; background: var(--bg-hover); }
.brand-logo { display: inline-flex; }
.brand-name {
    font-family: var(--font-serif);
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.btn-new-chat {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 4px 12px 16px;
    padding: 10px 14px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    color: var(--text);
    font-weight: 500;
    font-size: 14px;
    text-align: left;
    box-shadow: var(--shadow-xs);
    transition: all var(--t-fast);
}
.btn-new-chat:hover {
    border-color: var(--brand-300);
    background: var(--bg-elev);
    box-shadow: var(--shadow-sm), 0 0 0 3px var(--brand-50);
    transform: translateY(-1px);
}
body.dark .btn-new-chat:hover { box-shadow: var(--shadow-sm), 0 0 0 3px rgba(155, 125, 216, 0.15); }
.btn-new-chat span { flex: 1; }
.btn-new-chat .kbd-hint { flex-shrink: 0; }

.sidebar-section-label {
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-3);
    padding: 8px 20px 6px;
    flex-shrink: 0;
}

.conversations-list {
    flex: 1;
    overflow-y: auto;
    padding: 0 8px 12px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-height: 0;
}
.empty-convs {
    color: var(--text-3);
    font-size: 13px;
    padding: 12px 12px;
    font-style: italic;
}
.conv-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 9px 12px;
    border-radius: var(--r-sm);
    color: var(--text-2);
    font-size: 13.5px;
    cursor: pointer;
    border: 1px solid transparent;
    transition: background var(--t-fast), color var(--t-fast);
    position: relative;
    min-width: 0;
}
.conv-item:hover {
    background: var(--bg-hover);
    color: var(--text);
}
.conv-item.active {
    background: var(--bg-active);
    color: var(--text);
    font-weight: 500;
}
.conv-item .conv-title {
    flex: 1;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}
.conv-item .conv-delete {
    opacity: 0;
    padding: 3px;
    border-radius: var(--r-xs);
    color: var(--text-3);
    transition: opacity var(--t-fast), color var(--t-fast), background var(--t-fast);
    flex-shrink: 0;
}
.conv-item:hover .conv-delete { opacity: 1; }
.conv-item .conv-delete:hover { background: var(--bg-hover); color: var(--accent-coral); }

.sidebar-footer {
    border-top: 1px solid var(--border-subtle);
    padding: 8px;
    display: flex;
    flex-direction: column;
    gap: 2px;
    flex-shrink: 0;
}
.sidebar-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 12px;
    border-radius: var(--r-sm);
    color: var(--text-2);
    font-size: 13px;
    text-align: left;
    transition: background var(--t-fast), color var(--t-fast);
}
.sidebar-btn:hover { background: var(--bg-hover); color: var(--text); }

/* Overlay mobile */
.sidebar-overlay {
    position: fixed;
    inset: 0;
    background: var(--bg-overlay);
    opacity: 0;
    pointer-events: none;
    z-index: 15;
    transition: opacity var(--t-med);
}
.app.sidebar-mobile-open .sidebar-overlay {
    opacity: 1;
    pointer-events: auto;
}

/* --------------------------------------------------------------------------
   Main
   -------------------------------------------------------------------------- */
.main {
    display: grid;
    grid-template-rows: var(--topbar-h) 1fr;
    grid-template-columns: 1fr auto;
    min-width: 0;
    min-height: 0;
    height: 100%;
    background: var(--bg-chat);
    position: relative;
    overflow: hidden;
}

/* --------------------------------------------------------------------------
   Topbar
   -------------------------------------------------------------------------- */
.topbar {
    grid-column: 1 / -1;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    padding: 0 16px;
    background: color-mix(in srgb, var(--bg-chat) 80%, transparent);
    backdrop-filter: saturate(140%) blur(10px);
    -webkit-backdrop-filter: saturate(140%) blur(10px);
    border-bottom: 1px solid var(--border-subtle);
    z-index: 8;
    position: sticky;
    top: 0;
}
.topbar-left { display: flex; align-items: center; gap: 10px; }
.topbar-center { display: flex; justify-content: center; }
.topbar-right { display: flex; align-items: center; gap: 4px; justify-content: flex-end; }

/* Icon button générique */
.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: var(--r-sm);
    color: var(--text-2);
    transition: background var(--t-fast), color var(--t-fast);
    flex-shrink: 0;
}
.icon-btn:hover { background: var(--bg-hover); color: var(--text); }
.icon-btn.active { background: var(--bg-active); color: var(--brand-600); }
body.dark .icon-btn.active { color: var(--brand-300); }

.mobile-only { display: none; }

/* Model selector pill */
.model-selector {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px 6px 12px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    position: relative;
    box-shadow: var(--shadow-xs);
    transition: all var(--t-fast);
    max-width: 280px;
}
.model-selector:hover { border-color: var(--border-strong); }
.model-selector:focus-within { border-color: var(--brand-400); box-shadow: var(--shadow-xs), var(--focus-ring); }
.model-status {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    flex-shrink: 0;
    background: var(--text-4);
    transition: background var(--t-fast);
}
.model-status.online { background: #37C98A; box-shadow: 0 0 0 3px rgba(55, 201, 138, 0.18); }
.model-status.api    { background: #F5B647; box-shadow: 0 0 0 3px rgba(245, 182, 71, 0.18); }
.model-status.offline { background: #E15757; box-shadow: 0 0 0 3px rgba(225, 87, 87, 0.18); }
.model-selector select {
    appearance: none;
    -webkit-appearance: none;
    background: transparent;
    border: none;
    font-size: 13px;
    font-weight: 500;
    color: var(--text);
    padding: 0 18px 0 0;
    max-width: 220px;
    text-overflow: ellipsis;
    cursor: pointer;
    outline: none;
}
.select-chevron {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-3);
    pointer-events: none;
}

/* Mode toggle — segmented */
.mode-toggle {
    display: inline-flex;
    padding: 3px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    box-shadow: var(--shadow-xs);
    gap: 2px;
}
.mode-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 14px;
    border-radius: var(--r-full);
    font-size: 13px;
    font-weight: 500;
    color: var(--text-3);
    transition: all var(--t-fast);
    white-space: nowrap;
}
.mode-btn:hover { color: var(--text); }
.mode-btn.active {
    background: var(--bg-user-msg);
    color: var(--text-inverse);
    box-shadow: var(--shadow-xs);
}
.mode-btn.active:hover { color: var(--text-inverse); }
.mode-btn svg { flex-shrink: 0; }

/* --------------------------------------------------------------------------
   Chat area
   -------------------------------------------------------------------------- */
.chat {
    grid-column: 1 / 2;
    grid-row: 2 / 3;
    display: flex;
    flex-direction: column;
    min-width: 0;
    min-height: 0;
    position: relative;
    overflow: hidden;
}
.chat-scroll {
    flex: 1;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    overscroll-behavior: contain;
    padding: 0 20px;
}
.scroll-padding { height: 40px; }

/* Empty state */
.empty-state {
    max-width: var(--content-max-w);
    margin: 0 auto;
    padding: 8vh 0 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 36px;
    animation: fadeInUp var(--t-slow);
}
.empty-state.hidden { display: none; }
.empty-hero {
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 14px;
}
.tiare-mark {
    display: inline-flex;
    width: 72px;
    height: 72px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-elev);
    box-shadow: var(--shadow-md);
    animation: tiaraBloom 900ms cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes tiaraBloom {
    from { transform: scale(0.6) rotate(-30deg); opacity: 0; }
    to   { transform: scale(1) rotate(0); opacity: 1; }
}
.empty-title {
    font-family: var(--font-serif);
    font-size: clamp(28px, 4vw, 40px);
    font-weight: 600;
    letter-spacing: -0.02em;
    line-height: 1.1;
    background: linear-gradient(135deg, var(--brand-600), var(--accent-coral));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.wave {
    display: inline-block;
    -webkit-background-clip: initial;
    background-clip: initial;
    color: initial;
    animation: wave 1.6s ease-in-out infinite;
    transform-origin: 70% 70%;
}
@keyframes wave {
    0%, 60%, 100% { transform: rotate(0); }
    10% { transform: rotate(14deg); }
    20% { transform: rotate(-8deg); }
    30% { transform: rotate(14deg); }
    40% { transform: rotate(-4deg); }
    50% { transform: rotate(10deg); }
}
.empty-subtitle {
    max-width: 560px;
    color: var(--text-2);
    font-size: 15.5px;
    line-height: 1.6;
}

.suggestion-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
    width: 100%;
}
.suggestion {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    text-align: left;
    padding: 14px 16px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    transition: all var(--t-fast);
    box-shadow: var(--shadow-xs);
    min-width: 0;
}
.suggestion:hover {
    border-color: var(--brand-300);
    box-shadow: var(--shadow-sm), 0 0 0 3px var(--brand-50);
    transform: translateY(-1px);
}
body.dark .suggestion:hover { box-shadow: var(--shadow-sm), 0 0 0 3px rgba(155, 125, 216, 0.12); }
.suggestion-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: var(--r-sm);
    background: var(--brand-50);
    color: var(--brand-600);
    flex-shrink: 0;
    transition: background var(--t-fast);
}
body.dark .suggestion-icon { background: rgba(155, 125, 216, 0.12); color: var(--brand-300); }
.suggestion-title {
    font-weight: 600;
    font-size: 13.5px;
    color: var(--text);
    margin-bottom: 2px;
}
.suggestion-desc {
    font-size: 13px;
    color: var(--text-3);
    line-height: 1.45;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

/* --------------------------------------------------------------------------
   Messages
   -------------------------------------------------------------------------- */
.chat-messages {
    max-width: var(--content-max-w);
    margin: 0 auto;
    padding: 24px 0 12px;
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.message {
    display: flex;
    gap: 14px;
    animation: messageIn var(--t-med);
    position: relative;
    max-width: 100%;
}
@keyframes messageIn {
    from { opacity: 0; transform: translateY(6px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* User */
.message.user {
    justify-content: flex-end;
}
.message.user .msg-bubble {
    background: var(--bg-user-msg);
    color: var(--text-inverse);
    padding: 11px 16px;
    border-radius: var(--r-lg) var(--r-lg) 4px var(--r-lg);
    max-width: 75%;
    box-shadow: var(--shadow-sm);
    white-space: pre-wrap;
    word-break: break-word;
}

/* Assistant */
.message.assistant {
    flex-direction: row;
    align-items: flex-start;
}
.msg-avatar {
    width: 32px;
    height: 32px;
    flex-shrink: 0;
    border-radius: 50%;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
    box-shadow: var(--shadow-xs);
}
.message.assistant .msg-content {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}
.msg-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 12px;
    color: var(--text-3);
    line-height: 1;
}
.msg-meta .msg-name { font-weight: 600; color: var(--text-2); font-size: 13px; }
.mode-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 10.5px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 8px;
    border-radius: var(--r-full);
    background: var(--brand-50);
    color: var(--brand-700);
}
body.dark .mode-badge { background: rgba(155, 125, 216, 0.15); color: var(--brand-300); }
.mode-badge.mode-conversation { background: color-mix(in srgb, var(--accent-coral) 18%, transparent); color: var(--accent-coral); }
body.dark .mode-badge.mode-conversation { background: rgba(199, 102, 158, 0.2); color: #E489BD; }

.msg-bubble {
    font-size: 15px;
    line-height: 1.65;
}
.message.assistant .msg-bubble {
    color: var(--text);
}
.msg-bubble p { margin: 0 0 10px; }
.msg-bubble p:last-child { margin-bottom: 0; }
.msg-bubble strong { font-weight: 600; color: var(--text); }
.msg-bubble em { font-style: italic; }
.msg-bubble h1, .msg-bubble h2, .msg-bubble h3 {
    font-family: var(--font-serif);
    font-weight: 600;
    line-height: 1.25;
    margin: 14px 0 6px;
    color: var(--text);
}
.msg-bubble h1 { font-size: 20px; }
.msg-bubble h2 { font-size: 18px; }
.msg-bubble h3 { font-size: 16px; }
.msg-bubble ul, .msg-bubble ol { padding-left: 24px; margin: 0 0 10px; }
.msg-bubble ul li, .msg-bubble ol li { margin: 4px 0; }
.msg-bubble blockquote {
    border-left: 3px solid var(--brand-400);
    padding: 4px 0 4px 14px;
    margin: 10px 0;
    color: var(--text-2);
    font-style: italic;
    background: var(--bg-hover);
    border-radius: 0 var(--r-xs) var(--r-xs) 0;
}
.msg-bubble code:not(pre code) {
    font-family: var(--font-mono);
    font-size: 0.88em;
    padding: 1.5px 6px;
    background: var(--bg-code);
    border: 1px solid var(--border-subtle);
    border-radius: 5px;
    color: var(--brand-700);
}
body.dark .msg-bubble code:not(pre code) { color: var(--brand-300); }
.msg-bubble pre {
    margin: 12px 0;
    border-radius: var(--r-md);
    background: var(--bg-code-block);
    overflow: hidden;
    border: 1px solid var(--border-subtle);
}
.code-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 12px;
    background: rgba(255, 255, 255, 0.04);
    color: #B9B4C2;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0.04em;
    text-transform: uppercase;
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}
.code-copy {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 8px;
    border-radius: 6px;
    color: #B9B4C2;
    font-size: 11px;
    font-weight: 500;
    letter-spacing: 0;
    text-transform: none;
    transition: background var(--t-fast), color var(--t-fast);
}
.code-copy:hover { background: rgba(255, 255, 255, 0.08); color: #FFF; }
.msg-bubble pre code {
    display: block;
    padding: 14px 16px;
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.55;
    color: #E8E4EF;
    overflow-x: auto;
    background: transparent;
    border: none;
    border-radius: 0;
}
.ty-word {
    background: linear-gradient(180deg, transparent 60%, color-mix(in srgb, var(--accent-gold) 40%, transparent) 60%);
    padding: 0 2px;
    font-family: var(--font-serif);
    font-style: italic;
    font-weight: 500;
}

/* Message actions (hover) */
.msg-actions {
    display: flex;
    gap: 2px;
    opacity: 0;
    transition: opacity var(--t-fast);
    margin-left: -6px;
}
.message.assistant:hover .msg-actions,
.message.assistant:focus-within .msg-actions { opacity: 1; }
.msg-action-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: var(--r-xs);
    color: var(--text-3);
    transition: background var(--t-fast), color var(--t-fast);
}
.msg-action-btn:hover { background: var(--bg-hover); color: var(--text); }
.msg-action-btn.is-copied { color: var(--accent-teal); }

/* Typing indicator */
.typing {
    display: inline-flex;
    gap: 4px;
    padding: 8px 0;
    align-items: center;
}
.typing .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: var(--brand-400);
    animation: typingBounce 1.4s ease-in-out infinite;
}
.typing .dot:nth-child(2) { animation-delay: 0.18s; }
.typing .dot:nth-child(3) { animation-delay: 0.36s; }
@keyframes typingBounce {
    0%, 60%, 100% { transform: translateY(0); opacity: 0.35; }
    30%           { transform: translateY(-5px); opacity: 1; }
}

/* Scroll to bottom button */
.btn-scroll-bottom {
    position: absolute;
    right: 24px;
    bottom: 140px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 34px;
    height: 34px;
    border-radius: 50%;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    color: var(--text-2);
    box-shadow: var(--shadow-md);
    transition: all var(--t-fast);
    opacity: 0;
    pointer-events: none;
    z-index: 3;
}
.btn-scroll-bottom.visible { opacity: 1; pointer-events: auto; }
.btn-scroll-bottom:hover { color: var(--brand-600); border-color: var(--brand-300); transform: translateY(-2px); }
body.dark .btn-scroll-bottom:hover { color: var(--brand-300); }

/* --------------------------------------------------------------------------
   Composer
   -------------------------------------------------------------------------- */
.composer-wrap {
    padding: 10px 20px 20px;
    background: linear-gradient(to top, var(--bg-chat) 30%, transparent 100%);
    position: relative;
    z-index: 4;
}
.composer {
    max-width: var(--composer-max-w);
    margin: 0 auto;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--t-fast);
    padding: 8px 10px 6px 16px;
}
.composer:focus-within {
    border-color: var(--brand-400);
    box-shadow: var(--shadow-md), var(--focus-ring);
}
.composer-meta {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 11.5px;
    color: var(--text-3);
    padding: 4px 4px 2px;
    min-height: 20px;
}
.composer-meta .meta-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-4);
    transition: background var(--t-fast);
}
.composer-meta.lang-fr .meta-dot { background: #5A8CDE; }
.composer-meta.lang-ty .meta-dot { background: var(--accent-gold); }
.composer-input-row {
    display: flex;
    align-items: flex-end;
    gap: 8px;
}
.composer-input {
    flex: 1;
    resize: none;
    border: none;
    outline: none;
    background: transparent;
    color: var(--text);
    font-size: 15px;
    line-height: 1.55;
    padding: 6px 2px 8px;
    max-height: 240px;
    overflow-y: auto;
    font-family: var(--font-sans);
}
.composer-input::placeholder { color: var(--text-4); }
.send-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--r-full);
    background: var(--brand-600);
    color: #FFF;
    flex-shrink: 0;
    transition: all var(--t-fast);
    box-shadow: var(--shadow-sm);
}
.send-btn:hover { background: var(--brand-700); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.send-btn:active { transform: translateY(0); }
.send-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}
.send-btn.loading { background: var(--text-3); }

.composer-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 2px 4px 0;
    gap: 12px;
}
.composer-hint { font-size: 11px; color: var(--text-4); line-height: 1.4; }
.composer-counter { font-size: 11px; color: var(--text-4); font-variant-numeric: tabular-nums; }
.composer-counter.warn { color: #F5B647; }
.composer-counter.over { color: #E15757; }

/* --------------------------------------------------------------------------
   Dropdown menu (export, etc.)
   -------------------------------------------------------------------------- */
.export-menu { position: relative; display: inline-flex; }
.icon-btn:disabled { opacity: 0.4; cursor: not-allowed; }
.icon-btn:disabled:hover { background: transparent; color: var(--text-2); }

.dropdown {
    position: absolute;
    top: calc(100% + 6px);
    right: 0;
    min-width: 220px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    box-shadow: var(--shadow-lg);
    padding: 6px;
    z-index: 50;
    display: flex;
    flex-direction: column;
    gap: 1px;
    animation: dropdownIn var(--t-fast);
}
@keyframes dropdownIn {
    from { opacity: 0; transform: translateY(-4px) scale(0.98); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
.dropdown[hidden] { display: none; }

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 8px 12px;
    width: 100%;
    border-radius: var(--r-sm);
    color: var(--text-2);
    font-size: 13px;
    text-align: left;
    transition: background var(--t-fast), color var(--t-fast);
}
.dropdown-item:hover { background: var(--bg-hover); color: var(--text); }
.dropdown-item span { flex: 1; display: inline-flex; align-items: center; gap: 8px; }
.dropdown-hint {
    font-family: var(--font-mono);
    font-size: 11px;
    color: var(--text-4);
    background: var(--bg-hover);
    padding: 1px 6px;
    border-radius: 4px;
    margin-left: auto;
}
.dropdown-sep {
    height: 1px;
    background: var(--border-subtle);
    margin: 4px 0;
}

/* --------------------------------------------------------------------------
   Sources panel
   -------------------------------------------------------------------------- */
.sources-panel {
    grid-column: 2 / 3;
    grid-row: 2 / 3;
    width: 0;
    overflow: hidden;
    background: var(--bg-elev);
    border-left: 1px solid var(--border-subtle);
    transition: width var(--t-med);
    display: flex;
    flex-direction: column;
    min-width: 0;
}
.sources-panel.open { width: 360px; }
.sources-header {
    padding: 14px 16px 12px;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 8px;
    border-bottom: 1px solid var(--border-subtle);
    flex-shrink: 0;
}
.sources-header h2 {
    font-size: 14px;
    font-weight: 600;
    color: var(--text);
    margin-bottom: 2px;
}
.sources-subtitle {
    font-size: 12px;
    color: var(--text-3);
    line-height: 1.4;
}
.sources-content {
    flex: 1;
    overflow-y: auto;
    padding: 12px 14px 16px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.empty-state-text {
    text-align: center;
    color: var(--text-3);
    font-size: 13px;
    padding: 40px 20px;
    line-height: 1.5;
}
.source-card {
    background: var(--bg-source);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: 12px 14px;
    font-size: 13px;
    transition: border-color var(--t-fast);
}
.source-card:hover { border-color: var(--brand-300); }
.source-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 6px;
}
.source-score {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 11px;
    font-weight: 600;
    color: var(--brand-700);
    background: var(--brand-50);
    padding: 2px 8px;
    border-radius: var(--r-full);
}
body.dark .source-score { color: var(--brand-300); background: rgba(155, 125, 216, 0.14); }
.source-rank {
    font-size: 11px;
    color: var(--text-4);
    font-variant-numeric: tabular-nums;
}
.source-text {
    color: var(--text-2);
    line-height: 1.55;
    white-space: pre-wrap;
    margin-bottom: 8px;
    font-size: 13px;
}
.source-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}
.source-meta span {
    font-size: 10.5px;
    color: var(--text-3);
    background: var(--bg-hover);
    padding: 2px 7px;
    border-radius: var(--r-full);
    border: 1px solid var(--border-subtle);
}

/* --------------------------------------------------------------------------
   Modals
   -------------------------------------------------------------------------- */
.modal {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: modalIn var(--t-med);
}
.modal.hidden { display: none; }
@keyframes modalIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
.modal-overlay {
    position: absolute;
    inset: 0;
    background: var(--bg-overlay);
    backdrop-filter: blur(6px);
    -webkit-backdrop-filter: blur(6px);
}
.modal-content {
    position: relative;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-lg);
    box-shadow: var(--shadow-xl);
    width: 100%;
    max-width: 540px;
    max-height: min(80vh, 720px);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalSlide var(--t-med);
}
.modal-stats { max-width: 640px; }
@keyframes modalSlide {
    from { transform: translateY(12px) scale(0.98); opacity: 0; }
    to   { transform: translateY(0) scale(1); opacity: 1; }
}
.modal-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 12px;
    padding: 18px 20px 14px;
    border-bottom: 1px solid var(--border-subtle);
}
.modal-header h3 {
    font-size: 16px;
    font-weight: 600;
    line-height: 1.3;
    color: var(--text);
}
.modal-subtitle {
    font-size: 12.5px;
    color: var(--text-3);
    margin-top: 2px;
    line-height: 1.4;
}
.modal-body {
    padding: 18px 20px;
    overflow-y: auto;
}
.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
    padding: 12px 20px;
    border-top: 1px solid var(--border-subtle);
    background: var(--bg-sidebar);
}

/* Form */
.form-group { margin-bottom: 14px; }
.form-group:last-child { margin-bottom: 0; }
.form-group label {
    display: block;
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-2);
    margin-bottom: 6px;
}
.label-optional {
    font-weight: 400;
    color: var(--text-3);
    font-size: 11.5px;
}
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    background: var(--bg-input);
    color: var(--text);
    font-family: var(--font-sans);
    font-size: 13.5px;
    resize: vertical;
    line-height: 1.55;
    transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.form-group textarea:focus {
    outline: none;
    border-color: var(--brand-400);
    box-shadow: var(--focus-ring);
}
.form-group textarea[readonly] {
    background: var(--bg-hover);
    color: var(--text-2);
}

/* Buttons */
.btn {
    padding: 8px 18px;
    border-radius: var(--r-sm);
    font-size: 13.5px;
    font-weight: 500;
    transition: all var(--t-fast);
}
.btn-primary {
    background: var(--brand-600);
    color: #FFF;
    box-shadow: var(--shadow-sm);
}
.btn-primary:hover { background: var(--brand-700); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.btn-primary:active { transform: translateY(0); }
.btn-secondary {
    background: var(--bg-hover);
    color: var(--text);
    border: 1px solid var(--border);
}
.btn-secondary:hover { background: var(--border); }

/* Stats */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-bottom: 20px;
}
.stat-card {
    background: var(--bg-sidebar);
    border: 1px solid var(--border);
    border-radius: var(--r-md);
    padding: 14px;
    text-align: center;
}
.stat-value {
    font-family: var(--font-serif);
    font-size: 28px;
    font-weight: 600;
    color: var(--brand-600);
    line-height: 1;
    margin-bottom: 4px;
}
body.dark .stat-value { color: var(--brand-300); }
.stat-label {
    font-size: 11px;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    font-weight: 500;
}
.stats-section h4 {
    font-size: 12px;
    font-weight: 600;
    color: var(--text-3);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin: 16px 0 8px;
}
.stats-list { list-style: none; }
.stats-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 7px 2px;
    font-size: 13px;
    border-bottom: 1px solid var(--border-subtle);
}
.stats-list li:last-child { border-bottom: none; }
.stats-count { font-weight: 600; color: var(--brand-600); font-variant-numeric: tabular-nums; }
body.dark .stats-count { color: var(--brand-300); }
.loading-text { color: var(--text-3); text-align: center; padding: 20px; font-size: 13px; }

/* --------------------------------------------------------------------------
   Toast
   -------------------------------------------------------------------------- */
.toast {
    position: fixed;
    left: 50%;
    bottom: 32px;
    transform: translateX(-50%) translateY(12px);
    padding: 10px 18px 10px 14px;
    background: var(--bg-elev);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: var(--r-full);
    font-size: 13.5px;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    z-index: 200;
    opacity: 0;
    pointer-events: none;
    transition: all var(--t-med);
    display: inline-flex;
    align-items: center;
    gap: 10px;
}
.toast.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}
.toast::before {
    content: "";
    width: 8px;
    height: 8px;
    border-radius: 50%;
}
.toast.success::before { background: var(--accent-teal); box-shadow: 0 0 0 3px rgba(47, 181, 165, 0.18); }
.toast.error::before { background: #E15757; box-shadow: 0 0 0 3px rgba(225, 87, 87, 0.18); }
.toast.info::before { background: var(--brand-500); box-shadow: 0 0 0 3px rgba(126, 95, 200, 0.18); }

/* --------------------------------------------------------------------------
   Animations utilitaires
   -------------------------------------------------------------------------- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(8px); }
    to   { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */
@media (max-width: 1100px) {
    :root { --sidebar-w: 240px; }
    .model-selector select { max-width: 160px; }
}

@media (max-width: 960px) {
    .stats-grid { grid-template-columns: repeat(2, 1fr); }
    .sources-panel.open { width: 320px; }
}

@media (max-width: 900px) {
    :root {
        --sidebar-w: 280px;
        --topbar-h: 52px;
    }
    .app { grid-template-columns: 1fr; }
    .sidebar {
        position: fixed;
        left: 0; top: 0; bottom: 0;
        width: var(--sidebar-w);
        transform: translateX(-100%);
        grid-column: 1;
    }
    .main { grid-column: 1; grid-row: 1; }
    .app.sidebar-mobile-open .sidebar { transform: translateX(0); }
    .app.sidebar-collapsed .sidebar { transform: translateX(-100%); }
    .mobile-only { display: inline-flex; }
    #btn-collapse-sidebar { display: none; }
    .sources-panel {
        position: fixed;
        right: 0; top: 0; bottom: 0;
        width: 0;
        z-index: 16;
        box-shadow: var(--shadow-xl);
    }
    .sources-panel.open { width: min(360px, 90vw); }
    .message.user .msg-bubble { max-width: 86%; }
    .chat-scroll { padding: 0 12px; }
    .composer-wrap { padding: 6px 12px 14px; }
    .empty-state { padding: 6vh 0 32px; gap: 28px; }
    .empty-title { font-size: 26px; }
    .empty-subtitle { font-size: 14.5px; }
    .topbar { padding: 0 10px; grid-template-columns: auto 1fr auto; gap: 4px; }
    .model-selector { padding: 5px 8px 5px 10px; }
    .model-selector select { max-width: 120px; font-size: 12.5px; }
    .mode-btn span { display: none; }
    .mode-btn { padding: 6px 10px; }
    .suggestion-grid { grid-template-columns: 1fr; }
}

/* Mode toggle : on ≤ 480px on cache aussi labels en plus du tweak global */
@media (min-width: 901px) and (max-width: 1024px) {
    .mode-btn { padding: 6px 10px; }
    .mode-btn span { font-size: 12px; }
}

@media (max-width: 420px) {
    .modal { padding: 10px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .msg-avatar { width: 28px; height: 28px; }
}

/* --------------------------------------------------------------------------
   LOGIN SCREEN
   -------------------------------------------------------------------------- */
.login-screen {
    position: fixed;
    inset: 0;
    z-index: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(at 25% 30%, color-mix(in srgb, var(--brand-300) 22%, transparent), transparent 55%),
        radial-gradient(at 75% 70%, color-mix(in srgb, var(--accent-coral) 18%, transparent), transparent 55%),
        var(--bg);
    animation: loginFade var(--t-slow);
}
@keyframes loginFade {
    from { opacity: 0; }
    to   { opacity: 1; }
}
.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: var(--r-xl);
    box-shadow: var(--shadow-xl);
    padding: 36px 32px 28px;
    animation: loginRise 360ms cubic-bezier(0.34, 1.4, 0.64, 1);
}
@keyframes loginRise {
    from { opacity: 0; transform: translateY(16px) scale(0.97); }
    to   { opacity: 1; transform: translateY(0) scale(1); }
}
.login-brand {
    text-align: center;
    margin-bottom: 26px;
}
.login-brand .brand-logo {
    display: inline-flex;
    width: 72px; height: 72px;
    align-items: center; justify-content: center;
    border-radius: 50%;
    background: var(--bg);
    box-shadow: var(--shadow-sm);
    margin-bottom: 12px;
}
.login-title {
    font-family: var(--font-serif);
    font-size: 30px;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
    background: linear-gradient(135deg, var(--brand-600), var(--accent-coral));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}
.login-subtitle {
    color: var(--text-3);
    font-size: 13.5px;
    font-weight: 500;
}
.login-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}
.login-field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}
.login-field label {
    font-size: 12.5px;
    font-weight: 600;
    color: var(--text-2);
}
.login-field input {
    padding: 11px 13px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--r-sm);
    color: var(--text);
    font-size: 14px;
    font-family: var(--font-sans);
    transition: border-color var(--t-fast), box-shadow var(--t-fast);
}
.login-field input:focus {
    outline: none;
    border-color: var(--brand-400);
    box-shadow: var(--focus-ring);
}
.login-error {
    padding: 10px 12px;
    background: color-mix(in srgb, #E15757 12%, transparent);
    color: #C8434B;
    border: 1px solid color-mix(in srgb, #E15757 25%, transparent);
    border-radius: var(--r-sm);
    font-size: 13px;
    line-height: 1.45;
}
body.dark .login-error { color: #FF8A8A; }
.login-submit {
    margin-top: 6px;
    padding: 12px 18px;
    background: var(--brand-600);
    color: #FFF;
    border-radius: var(--r-sm);
    font-size: 14px;
    font-weight: 600;
    transition: all var(--t-fast);
    box-shadow: var(--shadow-sm);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
}
.login-submit:hover { background: var(--brand-700); transform: translateY(-1px); box-shadow: var(--shadow-md); }
.login-submit:active { transform: translateY(0); }
.login-submit:disabled { opacity: 0.6; cursor: not-allowed; transform: none; }
.login-submit-spinner { display: inline-flex; gap: 4px; align-items: center; }
.login-submit-spinner .dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.85);
    animation: typingBounce 1.2s ease-in-out infinite;
}
.login-submit-spinner .dot:nth-child(2) { animation-delay: 0.16s; }
.login-submit-spinner .dot:nth-child(3) { animation-delay: 0.32s; }
.login-foot {
    margin-top: 18px;
    text-align: center;
    color: var(--text-3);
    font-size: 12px;
}
.login-theme-toggle {
    position: fixed;
    top: 18px; right: 20px;
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--bg-elev);
    border: 1px solid var(--border);
    color: var(--text-2);
    box-shadow: var(--shadow-xs);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    transition: all var(--t-fast);
}
.login-theme-toggle:hover { color: var(--text); border-color: var(--border-strong); }

/* --------------------------------------------------------------------------
   SIDEBAR USER (logout)
   -------------------------------------------------------------------------- */
.sidebar-user {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    margin: 6px 0 0;
    border-top: 1px solid var(--border-subtle);
    color: var(--text-2);
    font-size: 13px;
}
.sidebar-user-avatar {
    width: 26px; height: 26px;
    border-radius: 50%;
    background: var(--bg-active);
    color: var(--brand-600);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
body.dark .sidebar-user-avatar { color: var(--brand-300); }
.sidebar-user-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    font-weight: 500;
    color: var(--text);
}
.sidebar-user-logout {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px; height: 28px;
    border-radius: var(--r-xs);
    color: var(--text-3);
    transition: background var(--t-fast), color var(--t-fast);
    flex-shrink: 0;
}
.sidebar-user-logout:hover { background: var(--bg-hover); color: var(--accent-coral); }

/* --------------------------------------------------------------------------
   Responsive login
   -------------------------------------------------------------------------- */
@media (max-width: 480px) {
    .login-card { padding: 28px 20px 22px; max-width: 360px; }
    .login-title { font-size: 26px; }
}

/* --------------------------------------------------------------------------
   Mode contributeur — toggle, bannière et carte inline
   -------------------------------------------------------------------------- */

/* Toggle topbar */
.contrib-toggle {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 10px 6px 9px;
    height: 32px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: transparent;
    color: var(--text-2);
    font: 500 12.5px/1 'Inter', system-ui, sans-serif;
    cursor: pointer;
    transition: background .15s ease, color .15s ease, border-color .15s ease, box-shadow .15s ease;
    position: relative;
}
.contrib-toggle:hover {
    background: var(--bg-hover);
    color: var(--text);
    border-color: var(--border-strong);
}
.contrib-toggle .contrib-toggle-icon { flex-shrink: 0; }
.contrib-toggle .contrib-toggle-label { white-space: nowrap; }
.contrib-toggle .contrib-toggle-dot {
    width: 6px; height: 6px; border-radius: 50%;
    background: var(--text-4);
    transition: background .15s ease, box-shadow .15s ease;
}
.contrib-toggle.active {
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--brand-500) 14%, transparent),
        color-mix(in srgb, var(--accent-coral) 14%, transparent));
    color: var(--brand-600);
    border-color: color-mix(in srgb, var(--brand-500) 38%, transparent);
}
body.dark .contrib-toggle.active { color: var(--brand-300); }
.contrib-toggle.active .contrib-toggle-dot {
    background: var(--accent-teal);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-teal) 22%, transparent);
}
.contrib-toggle:focus-visible { outline: none; box-shadow: var(--focus-ring); }

/* Bannière sous topbar */
.contributor-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 18px;
    background: linear-gradient(135deg,
        color-mix(in srgb, var(--brand-500) 12%, transparent),
        color-mix(in srgb, var(--accent-coral) 10%, transparent));
    color: var(--brand-700);
    border-bottom: 1px solid color-mix(in srgb, var(--brand-500) 20%, transparent);
    font: 500 13px/1.4 'Inter', system-ui, sans-serif;
}
body.dark .contributor-banner { color: var(--brand-200); }
.contributor-banner svg { flex-shrink: 0; color: var(--brand-600); }
body.dark .contributor-banner svg { color: var(--brand-300); }
.contributor-banner span { flex: 1; }
.contributor-banner-close {
    background: transparent;
    border: none;
    padding: 4px;
    cursor: pointer;
    color: var(--text-3);
    border-radius: 6px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}
.contributor-banner-close:hover { background: var(--bg-hover); color: var(--text); }

/* Carte contribution inline (sous chaque réponse assistant) */
.contrib-card {
    margin-top: 14px;
    border: 1px dashed color-mix(in srgb, var(--brand-500) 45%, var(--border));
    border-radius: 12px;
    background: color-mix(in srgb, var(--brand-50) 75%, var(--bg-elev));
    padding: 14px;
    font: 400 13px/1.5 'Inter', system-ui, sans-serif;
    color: var(--text);
    transition: border-color .18s ease, background .18s ease;
}
body.dark .contrib-card {
    background: color-mix(in srgb, var(--brand-800) 20%, var(--bg-elev));
    border-color: color-mix(in srgb, var(--brand-400) 35%, var(--border));
}
.contrib-card:focus-within {
    border-color: var(--brand-500);
    border-style: solid;
}
.contrib-card.sent {
    border-style: solid;
    border-color: color-mix(in srgb, var(--accent-teal) 45%, var(--border));
    background: color-mix(in srgb, var(--accent-teal) 8%, var(--bg-elev));
}

.contrib-card-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 12px;
}
.contrib-card-title {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-weight: 600;
    font-size: 13px;
    color: var(--brand-700);
}
body.dark .contrib-card-title { color: var(--brand-200); }
.contrib-card-dir {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    font-size: 12px;
    color: var(--text-2);
    background: var(--bg-elev);
    border: 1px solid var(--border);
    border-radius: 999px;
    padding: 3px 10px;
}
.contrib-dir-from, .contrib-dir-to { font-weight: 500; }
.contrib-dir-swap {
    background: transparent; border: none; cursor: pointer;
    color: var(--text-3); padding: 2px; border-radius: 4px;
    display: inline-flex; align-items: center;
}
.contrib-dir-swap:hover { background: var(--bg-hover); color: var(--brand-600); }

.contrib-card-body { display: flex; flex-direction: column; gap: 10px; }
.contrib-field { display: flex; flex-direction: column; gap: 4px; }
.contrib-field-label {
    font-size: 11.5px;
    font-weight: 500;
    color: var(--text-3);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}
.contrib-field-lang { text-transform: none; font-weight: 400; letter-spacing: 0; color: var(--text-4); }
.contrib-field-optional { text-transform: none; color: var(--text-4); font-weight: 400; letter-spacing: 0; }
.contrib-input {
    width: 100%;
    padding: 9px 11px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-input);
    color: var(--text);
    font: inherit;
    font-size: 13.5px;
    line-height: 1.45;
    resize: none;
    transition: border-color .15s ease, box-shadow .15s ease;
}
.contrib-input:focus {
    outline: none;
    border-color: var(--brand-500);
    box-shadow: var(--focus-ring);
}
textarea.contrib-input { min-height: 36px; max-height: 160px; overflow-y: auto; }
.contrib-field-target .contrib-input {
    border-width: 1.5px;
    border-color: color-mix(in srgb, var(--brand-500) 35%, var(--border));
}
.contrib-row {
    display: flex;
    align-items: flex-end;
    gap: 10px;
    flex-wrap: wrap;
}
.contrib-field-cat { flex: 1 1 220px; min-width: 200px; }
.contrib-advanced-toggle {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 7px 10px;
    font: 500 12px/1 'Inter', system-ui, sans-serif;
    color: var(--text-2);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 5px;
    height: 36px;
    transition: background .15s ease, color .15s ease;
}
.contrib-advanced-toggle:hover { background: var(--bg-hover); color: var(--text); }
.contrib-advanced-toggle svg { transition: transform .18s ease; }
.contrib-advanced-toggle.open svg { transform: rotate(180deg); }
.contrib-advanced {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 10px 0 2px;
    border-top: 1px solid var(--border-subtle);
}

.contrib-card-foot {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-top: 14px;
    padding-top: 10px;
    border-top: 1px solid var(--border-subtle);
}
.contrib-card-hint { font-size: 11.5px; color: var(--text-4); }
.contrib-submit {
    background: linear-gradient(135deg, var(--brand-600), var(--accent-coral));
    color: #fff;
    border: none;
    padding: 8px 18px;
    border-radius: 8px;
    font: 600 13px/1 'Inter', system-ui, sans-serif;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    min-height: 34px;
    transition: filter .15s ease, transform .1s ease, opacity .15s ease;
}
.contrib-submit:hover:not(:disabled) { filter: brightness(1.08); }
.contrib-submit:active:not(:disabled) { transform: translateY(1px); }
.contrib-submit:disabled { opacity: 0.45; cursor: not-allowed; }
.contrib-submit-spinner { display: inline-flex; gap: 3px; }
.contrib-submit-spinner .dot {
    width: 4px; height: 4px; border-radius: 50%; background: #fff; opacity: 0.85;
    animation: contribDot 1.1s infinite ease-in-out both;
}
.contrib-submit-spinner .dot:nth-child(2) { animation-delay: 0.15s; }
.contrib-submit-spinner .dot:nth-child(3) { animation-delay: 0.3s; }
@keyframes contribDot { 0%, 80%, 100% { transform: scale(0.7); opacity: 0.5; } 40% { transform: scale(1.1); opacity: 1; } }

/* Carte post-submit (mode lu) */
.contrib-sent {
    display: flex;
    align-items: center;
    gap: 12px;
}
.contrib-sent > svg:first-child {
    width: 20px; height: 20px;
    flex-shrink: 0;
    color: var(--accent-teal);
    background: color-mix(in srgb, var(--accent-teal) 18%, transparent);
    padding: 4px;
    border-radius: 999px;
    box-sizing: content-box;
}
.contrib-sent-body { flex: 1; display: flex; flex-direction: column; gap: 4px; min-width: 0; }
.contrib-sent-head {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
    font-size: 13px;
}
.contrib-sent-pair {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--text-2);
    flex-wrap: wrap;
}
.contrib-sent-pair svg { color: var(--text-4); }
.contrib-sent-src { color: var(--text-3); }
.contrib-sent-tgt { color: var(--text); font-weight: 600; }
.contrib-sent-meta { font-size: 11.5px; color: var(--text-3); }
.contrib-badge {
    font-size: 11px;
    padding: 2px 8px;
    border-radius: 999px;
    font-weight: 500;
}
.contrib-badge.ok {
    background: color-mix(in srgb, var(--accent-teal) 18%, transparent);
    color: var(--accent-teal);
}
.contrib-badge.warn {
    background: color-mix(in srgb, #E8A33A 22%, transparent);
    color: #A6731F;
}
body.dark .contrib-badge.warn { color: #E8B659; }
.contrib-edit-btn {
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 7px;
    padding: 5px 12px;
    font: 500 12px/1 'Inter', system-ui, sans-serif;
    color: var(--text-2);
    cursor: pointer;
    flex-shrink: 0;
}
.contrib-edit-btn:hover { background: var(--bg-hover); color: var(--brand-600); }

/* Cache le label du toggle sur petit écran */
@media (max-width: 640px) {
    .contrib-toggle .contrib-toggle-label { display: none; }
    .contrib-toggle { padding: 6px 8px; }
}

/* Utils */
.hidden { display: none !important; }
[hidden] { display: none !important; }