/* ═══════════════════════════════════════════════════════════════
   Landing Builder — Light-first theme with dark mode
   ═══════════════════════════════════════════════════════════════ */

/* ─── Reset & Base ───────────────────────────────────────────── */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    /* Light theme (default) */
    --bg-primary: #f8f9fb;
    --bg-secondary: #ffffff;
    --bg-tertiary: #f1f3f5;
    --bg-card: rgba(255, 255, 255, 0.85);
    --bg-card-hover: rgba(255, 255, 255, 1);
    --bg-glass: rgba(0, 0, 0, 0.02);
    --bg-input: rgba(0, 0, 0, 0.03);

    --border-color: rgba(0, 0, 0, 0.08);
    --border-hover: rgba(0, 0, 0, 0.15);
    --border-active: rgba(99, 102, 241, 0.4);

    --text-primary: #1a1a2e;
    --text-secondary: #6b7280;
    --text-muted: #9ca3af;

    --accent: #6366f1;
    --accent-hover: #4f46e5;
    --accent-glow: rgba(99, 102, 241, 0.1);
    --accent-gradient: linear-gradient(135deg, #6366f1, #8b5cf6);

    --success: #10b981;
    --error: #ef4444;
    --warning: #f59e0b;

    /* Typography */
    --font: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'SF Mono', 'Fira Code', monospace;

    /* Spacing */
    --radius: 12px;
    --radius-sm: 8px;
    --radius-lg: 16px;

    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.1);
    --shadow-glow: 0 0 30px var(--accent-glow);

    /* Transitions */
    --transition: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ─── Dark Theme ─────────────────────────────────────────────── */
[data-theme="dark"] {
    --bg-primary: #08080d;
    --bg-secondary: #0e0e16;
    --bg-tertiary: #14141f;
    --bg-card: rgba(18, 18, 30, 0.6);
    --bg-card-hover: rgba(24, 24, 42, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.03);
    --bg-input: rgba(255, 255, 255, 0.05);

    --border-color: rgba(255, 255, 255, 0.06);
    --border-hover: rgba(255, 255, 255, 0.12);

    --text-primary: #f0f0f5;
    --text-secondary: #8b8ba3;
    --text-muted: #555570;

    --accent-hover: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.15);

    --shadow-sm: 0 1px 3px rgba(0,0,0,0.4);
    --shadow-md: 0 4px 16px rgba(0,0,0,0.5);
    --shadow-lg: 0 8px 32px rgba(0,0,0,0.6);
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
    transition: background var(--transition-slow), color var(--transition-slow);
}

/* Subtle background accents */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background:
        radial-gradient(ellipse at 20% 0%, rgba(99, 102, 241, 0.04) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(168, 85, 247, 0.03) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

[data-theme="dark"] body::before {
    background:
        radial-gradient(ellipse at 20% 0%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 100%, rgba(168, 85, 247, 0.06) 0%, transparent 50%);
}

.app, .editor-app { position: relative; z-index: 1; }

/* ─── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(0,0,0,0.12); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(0,0,0,0.2); }
[data-theme="dark"] ::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); }
[data-theme="dark"] ::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.2); }

/* ─── Header ─────────────────────────────────────────────────── */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(248, 249, 251, 0.85);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    padding: 0 2rem;
    height: 64px;
    transition: background var(--transition-slow);
}
[data-theme="dark"] .header {
    background: rgba(8, 8, 13, 0.8);
}

.header__inner {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    gap: 12px;
}

.header__logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header__logo-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-gradient);
    border-radius: var(--radius-sm);
    color: white;
}

.header__title {
    font-size: 1.2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.header__badge {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    padding: 4px 10px;
    background: var(--accent-glow);
    border: 1px solid var(--border-active);
    border-radius: 20px;
    color: var(--accent);
}

/* ─── Theme Toggle ───────────────────────────────────────────── */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: 1px solid var(--border-color);
    border-radius: 50%;
    background: var(--bg-glass);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition);
    flex-shrink: 0;
}
.theme-toggle:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
    background: var(--bg-input);
}
/* Show sun in dark mode, moon in light mode */
.theme-toggle__sun { display: none; }
.theme-toggle__moon { display: block; }
[data-theme="dark"] .theme-toggle__sun { display: block; }
[data-theme="dark"] .theme-toggle__moon { display: none; }

/* ─── Main Content ───────────────────────────────────────────── */
.main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

.main__hero {
    text-align: center;
    margin-bottom: 3rem;
}

.main__heading {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.03em;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.main__subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

/* ─── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 22px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
}

.btn--primary {
    background: var(--accent-gradient);
    color: white;
    box-shadow: var(--shadow-glow);
}
.btn--primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 0 40px var(--accent-glow), var(--shadow-md);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.btn--ghost:hover {
    background: var(--bg-glass);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.btn--small {
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn--danger {
    background: transparent;
    color: var(--error);
    border: 1px solid rgba(239, 68, 68, 0.2);
}
.btn--danger:hover {
    background: rgba(239, 68, 68, 0.06);
    border-color: rgba(239, 68, 68, 0.4);
}

.btn--copied {
    border-color: var(--success) !important;
    color: var(--success) !important;
}

.btn--accent {
    background: var(--accent-gradient);
    color: white;
    border: none;
}
.btn--accent:hover {
    box-shadow: var(--shadow-glow);
    transform: translateY(-1px);
}
.btn--accent:disabled {
    opacity: 0.6;
    cursor: wait;
    transform: none;
}

/* ─── Projects Grid ──────────────────────────────────────────── */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    cursor: pointer;
    transition: all var(--transition);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
}

.project-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--accent-gradient);
    opacity: 0;
    transition: opacity var(--transition);
    z-index: 0;
}

.project-card:hover {
    border-color: var(--border-active);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.project-card:hover::before { opacity: 0.03; }

.project-card__content { position: relative; z-index: 1; }

.project-card__icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border-radius: var(--radius);
    color: var(--accent);
    margin-bottom: 1rem;
}

.project-card__name {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.3rem;
    letter-spacing: -0.01em;
}

.project-card__meta {
    font-size: 0.8rem;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 1rem;
}

.project-card__status {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    font-size: 0.75rem;
    padding: 3px 8px;
    border-radius: 20px;
}

.project-card__status--ready {
    background: rgba(16, 185, 129, 0.08);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.2);
}

.project-card__status--empty {
    background: var(--bg-glass);
    color: var(--text-muted);
    border: 1px solid var(--border-color);
}

.project-card__actions {
    display: flex;
    gap: 8px;
    margin-top: 0.5rem;
}

.project-card__delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: all var(--transition);
    position: absolute;
    top: 1rem;
    right: 1rem;
    z-index: 2;
}
.project-card__delete:hover { color: var(--error); background: rgba(239,68,68,0.08); }

/* ─── Empty State ────────────────────────────────────────────── */
.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}
.empty-state__icon {
    margin-bottom: 1.5rem;
    opacity: 0.3;
}
.empty-state h2 { color: var(--text-secondary); font-weight: 600; margin-bottom: 0.5rem; }
.empty-state p { font-size: 0.95rem; }

/* ─── Modal ──────────────────────────────────────────────────── */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.3);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}
[data-theme="dark"] .modal-overlay {
    background: rgba(0, 0, 0, 0.7);
}
.modal-overlay.active { opacity: 1; visibility: visible; }

.modal {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 2rem;
    width: 90%;
    max-width: 440px;
    box-shadow: var(--shadow-lg);
    transform: scale(0.95) translateY(10px);
    transition: transform var(--transition);
}
.modal-overlay.active .modal { transform: scale(1) translateY(0); }

.modal__header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 1.5rem; }
.modal__title { font-size: 1.2rem; font-weight: 700; }
.modal__close {
    background: none; border: none; color: var(--text-muted);
    font-size: 1.5rem; cursor: pointer; padding: 4px 8px;
    transition: color var(--transition);
}
.modal__close:hover { color: var(--text-primary); }

.modal__body { margin-bottom: 1.5rem; }
.modal__footer { display: flex; justify-content: flex-end; gap: 10px; }

.modal--wide { max-width: 700px; max-height: 80vh; display: flex; flex-direction: column; }
.modal__header-actions { display: flex; align-items: center; gap: 10px; }

/* Assets grid */
.assets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    gap: 12px;
    overflow-y: auto;
    padding: 4px;
    max-height: 60vh;
}

.assets-empty {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--text-muted);
    padding: 3rem;
    font-size: 0.9rem;
}

.asset-card {
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    overflow: hidden;
    transition: all var(--transition);
}
.asset-card:hover {
    border-color: var(--accent);
    box-shadow: 0 2px 12px rgba(0, 0, 0, 0.08);
}

.asset-card__img {
    width: 100%;
    height: 120px;
    object-fit: cover;
    display: block;
    background: var(--bg-glass);
}

.asset-card__info {
    padding: 8px 10px;
}

.asset-card__name {
    font-size: 0.72rem;
    color: var(--text-muted);
    display: block;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    margin-bottom: 4px;
}

.asset-card__desc {
    width: 100%;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 4px 6px;
    font-size: 0.75rem;
    color: var(--text-primary);
    outline: none;
    transition: border-color var(--transition);
}
.asset-card__desc:focus { border-color: var(--accent); }
.asset-card__desc::placeholder { color: var(--text-muted); }

.asset-card__actions {
    display: flex;
    gap: 4px;
    margin-top: 6px;
}

.asset-card__btn {
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 3px 6px;
    font-size: 0.68rem;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 3px;
    transition: all var(--transition);
}
.asset-card__btn:hover { border-color: var(--accent); color: var(--accent); }
.asset-card__btn--delete:hover { border-color: var(--error); color: var(--error); }

/* ─── Inputs ─────────────────────────────────────────────────── */
.input-label {
    display: block;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.input {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.95rem;
    transition: all var(--transition);
    outline: none;
}
.input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow); }
.input::placeholder { color: var(--text-muted); }

.input-hint { font-size: 0.8rem; color: var(--text-muted); margin-top: 0.5rem; }

/* ═══════════════════════════════════════════════════════════════
   EDITOR PAGE
   ═══════════════════════════════════════════════════════════════ */

.editor-page {
    overflow: hidden;
    height: 100vh;
}

.editor-app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* ─── Editor Header ──────────────────────────────────────────── */
.editor-header {
    display: flex;
    align-items: center;
    gap: 12px;
    height: 52px;
    padding: 0 1rem;
    background: rgba(248, 249, 251, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    flex-shrink: 0;
    transition: background var(--transition-slow);
}
[data-theme="dark"] .editor-header {
    background: rgba(8, 8, 13, 0.9);
}

.editor-header__back {
    color: var(--text-secondary);
    transition: color var(--transition);
    display: flex;
    align-items: center;
    padding: 6px;
    border-radius: var(--radius-sm);
    text-decoration: none;
}
.editor-header__back:hover { color: var(--text-primary); background: var(--bg-glass); }

.editor-header__project {
    font-weight: 600;
    font-size: 0.95rem;
    flex: 1;
    display: flex;
    align-items: center;
    gap: 6px;
}

.editor-header__rename {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    opacity: 0;
    transition: all var(--transition);
}
.editor-header__project:hover .editor-header__rename { opacity: 1; }
.editor-header__rename:hover {
    color: var(--accent);
    background: var(--accent-glow);
}

.editor-header__actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

/* ─── Style Selector ─────────────────────────────────────────── */
.style-selector {
    display: flex;
    align-items: center;
}

.style-selector__select {
    padding: 5px 28px 5px 10px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    outline: none;
    transition: all var(--transition);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%236b7280' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
}
.style-selector__select:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}
[data-theme="dark"] .style-selector__select {
    background-image: url("data:image/svg+xml,%3Csvg width='10' height='6' viewBox='0 0 10 6' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M1 1l4 4 4-4' stroke='%238b8ba3' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

/* ─── Workspace ──────────────────────────────────────────────── */
.workspace {
    display: flex;
    flex: 1;
    overflow: hidden;
}

.panel { overflow: hidden; display: flex; flex-direction: column; }

.panel--chat {
    width: 40%;
    min-width: 300px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border-color);
}

.panel--preview {
    flex: 1;
    background: #ffffff;
    position: relative;
}

/* ─── Resizer ────────────────────────────────────────────────── */
.resizer {
    width: 6px;
    cursor: col-resize;
    background: var(--bg-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: background var(--transition);
    position: relative;
    z-index: 10;
}
.resizer:hover, .resizer.active {
    background: var(--accent);
}

.resizer__handle {
    width: 2px;
    height: 32px;
    background: var(--text-muted);
    border-radius: 1px;
    transition: background var(--transition);
}
.resizer:hover .resizer__handle,
.resizer.active .resizer__handle {
    background: white;
}

/* ─── Chat ───────────────────────────────────────────────────── */
.chat {
    display: flex;
    flex-direction: column;
    height: 100%;
}

.chat__messages {
    flex: 1;
    overflow-y: auto;
    padding: 1.5rem;
    scroll-behavior: smooth;
}

/* Welcome */
.chat__welcome {
    text-align: center;
    padding: 2rem 1rem;
}
.chat__welcome-icon {
    margin: 0 auto 1rem;
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-glow);
    border-radius: 50%;
    color: var(--accent);
}
.chat__welcome h3 { font-size: 1.15rem; font-weight: 700; margin-bottom: 0.5rem; }
.chat__welcome p { color: var(--text-secondary); font-size: 0.9rem; max-width: 350px; margin: 0 auto 1.5rem; line-height: 1.6; }

.chat__suggestions { display: flex; flex-direction: column; gap: 8px; }

.chat__suggestion {
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 10px 14px;
    color: var(--text-secondary);
    font-family: var(--font);
    font-size: 0.85rem;
    cursor: pointer;
    text-align: left;
    transition: all var(--transition);
}
.chat__suggestion:hover {
    background: var(--accent-glow);
    border-color: var(--border-active);
    color: var(--text-primary);
}

/* Summary Notice */
.chat__summary-notice {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    margin: 1rem 0;
    padding: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-light);
    border-radius: 8px;
    text-align: center;
}

.chat__summary-notice svg {
    color: var(--accent-primary);
}

/* Messages */
.msg {
    margin-bottom: 1.25rem;
    animation: msgIn 0.3s ease;
}

@keyframes msgIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.msg__header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

.msg__avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
    flex-shrink: 0;
}

.msg--user .msg__avatar {
    background: var(--accent-gradient);
    color: white;
}

.msg--ai .msg__avatar {
    background: rgba(16, 185, 129, 0.12);
    color: var(--success);
}

.msg__name {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.msg__body {
    padding-left: 36px;
    font-size: 0.9rem;
    line-height: 1.7;
    color: var(--text-primary);
}

.msg--user .msg__body {
    color: var(--text-secondary);
}

.msg__body p { margin-bottom: 0.5em; }
.msg__body p:last-child { margin-bottom: 0; }

.msg__body code {
    background: rgba(99,102,241,0.06);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: var(--font-mono);
    font-size: 0.85em;
}
[data-theme="dark"] .msg__body code {
    background: rgba(255,255,255,0.06);
}

.msg__body pre {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 1rem;
    margin: 0.75rem 0;
    overflow-x: auto;
    font-size: 0.82rem;
    line-height: 1.5;
}

.msg__body pre code {
    background: none;
    padding: 0;
}

/* File blocks in AI response — hidden since we save them */
.msg__file-block {
    display: none;
}

/* Thinking indicator */
.msg--thinking .msg__body {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-muted);
}

.thinking-dots {
    display: flex;
    gap: 4px;
}

.thinking-dots span {
    width: 6px;
    height: 6px;
    background: var(--accent);
    border-radius: 50%;
    animation: dot-pulse 1.4s ease-in-out infinite;
}
.thinking-dots span:nth-child(2) { animation-delay: 0.2s; }
.thinking-dots span:nth-child(3) { animation-delay: 0.4s; }

@keyframes dot-pulse {
    0%, 80%, 100% { opacity: 0.3; transform: scale(0.8); }
    40% { opacity: 1; transform: scale(1); }
}

/* Files updated notification */
.msg--files-updated {
    margin-bottom: 1.25rem;
}

.files-updated-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(16, 185, 129, 0.06);
    border: 1px solid rgba(16, 185, 129, 0.15);
    border-radius: var(--radius-sm);
    color: var(--success);
    font-size: 0.8rem;
    font-weight: 500;
    margin-left: 36px;
}

/* ─── Chat Input ─────────────────────────────────────────────── */
.chat__input-area {
    padding: 1rem 1.5rem;
    border-top: 1px solid var(--border-color);
    background: var(--bg-secondary);
}

.chat__input-area--dragover {
    background: var(--accent-glow);
    border-top-color: var(--accent);
}

/* Attachments preview */
.chat__attachments {
    display: none;
    gap: 8px;
    padding: 0 0 10px;
    flex-wrap: wrap;
}

.chat__attachment-preview {
    position: relative;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    background: var(--bg-glass);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.chat__attachment-preview img {
    width: 40px;
    height: 40px;
    object-fit: cover;
    border-radius: 4px;
}

.chat__attachment-name {
    font-size: 0.75rem;
    color: var(--text-secondary);
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.chat__attachment-remove {
    background: none;
    border: none;
    color: var(--text-muted);
    font-size: 1.1rem;
    cursor: pointer;
    padding: 0 2px;
    line-height: 1;
    transition: color var(--transition);
}
.chat__attachment-remove:hover { color: var(--error); }

/* Attach button */
.chat__attach {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 6px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition);
}
.chat__attach:hover {
    color: var(--accent);
    background: var(--accent-glow);
}

/* Images in messages */
.msg__images {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.msg__image-thumb {
    width: 80px;
    height: 80px;
    object-fit: cover;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: transform var(--transition);
}
.msg__image-thumb:hover {
    transform: scale(1.05);
}

.chat__input-wrapper {
    display: flex;
    align-items: flex-end;
    gap: 8px;
    background: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 8px 12px;
    transition: all var(--transition);
}
.chat__input-wrapper:focus-within {
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.chat__input {
    flex: 1;
    background: none;
    border: none;
    color: var(--text-primary);
    font-family: var(--font);
    font-size: 0.9rem;
    line-height: 1.5;
    resize: none;
    outline: none;
    max-height: 120px;
    min-height: 24px;
}
.chat__input::placeholder { color: var(--text-muted); }

.chat__send {
    background: var(--accent-gradient);
    border: none;
    color: white;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    transition: all var(--transition);
}
.chat__send:hover { transform: scale(1.05); box-shadow: var(--shadow-glow); }
.chat__send:disabled { opacity: 0.4; cursor: not-allowed; transform: none; }

/* Stop button (replaces send during streaming) */
.chat__send--stop {
    background: var(--error);
    animation: pulse-stop 1.5s ease infinite;
}
.chat__send--stop:hover {
    background: #dc2626;
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.3);
}
@keyframes pulse-stop {
    0%, 100% { box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.3); }
    50% { box-shadow: 0 0 0 6px rgba(239, 68, 68, 0); }
}

/* Message delete button */
.msg__delete {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 3px;
    border-radius: 4px;
    opacity: 0;
    transition: all var(--transition);
    margin-left: auto;
}
.msg:hover .msg__delete { opacity: 1; }
.msg__delete:hover {
    color: var(--error);
    background: rgba(239, 68, 68, 0.08);
}

.msg__header {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 6px;
}

/* ─── Preview ────────────────────────────────────────────────── */
.preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: none;
}
.preview-iframe.visible { display: block; }

.preview-empty {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: #999;
    gap: 1rem;
    background: #f5f5f5;
}
.preview-empty p { font-size: 0.95rem; }
.preview-empty.hidden { display: none; }

/* ─── Progress Tracker ───────────────────────────────────────── */
.progress-tracker {
    margin: 0.75rem 0 1.25rem 36px;
    animation: msgIn 0.3s ease;
    transition: opacity 0.3s ease;
}

.progress-tracker__inner {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 8px 16px;
    background: rgba(99, 102, 241, 0.06);
    border: 1px solid rgba(99, 102, 241, 0.12);
    border-radius: 20px;
    font-size: 0.82rem;
    font-weight: 500;
    color: var(--accent);
    transition: all var(--transition);
}
[data-theme="dark"] .progress-tracker__inner {
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.15);
    color: var(--accent-hover);
}

.progress-tracker__spinner {
    width: 14px;
    height: 14px;
    border: 2px solid rgba(99, 102, 241, 0.15);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Progress states */
.progress-tracker--thinking,
.progress-tracker--responding {
    background: rgba(99, 102, 241, 0.06);
    border-color: rgba(99, 102, 241, 0.12);
    color: var(--accent);
}

.progress-tracker--writing {
    background: rgba(245, 158, 11, 0.06);
    border-color: rgba(245, 158, 11, 0.15);
    color: #b45309;
}
[data-theme="dark"] .progress-tracker--writing {
    color: var(--warning);
}

.progress-tracker--writing .progress-tracker__spinner {
    border-color: rgba(245, 158, 11, 0.15);
    border-top-color: var(--warning);
}

.progress-tracker--done-file,
.progress-tracker--saved,
.progress-tracker--complete {
    background: rgba(16, 185, 129, 0.06);
    border-color: rgba(16, 185, 129, 0.12);
    color: #047857;
}
[data-theme="dark"] .progress-tracker--done-file,
[data-theme="dark"] .progress-tracker--saved,
[data-theme="dark"] .progress-tracker--complete {
    color: var(--success);
}

.progress-tracker--saved .progress-tracker__spinner,
.progress-tracker--complete .progress-tracker__spinner,
.progress-tracker--done-file .progress-tracker__spinner {
    animation: none;
    border: none;
    width: auto;
    height: auto;
}

.progress-tracker--saved .progress-tracker__spinner::after,
.progress-tracker--complete .progress-tracker__spinner::after,
.progress-tracker--done-file .progress-tracker__spinner::after {
    content: '✓';
    font-size: 0.9rem;
}

.progress-tracker--error {
    background: rgba(239, 68, 68, 0.06);
    border-color: rgba(239, 68, 68, 0.15);
    color: var(--error);
}

.progress-tracker--error .progress-tracker__spinner {
    animation: none;
    border: none;
}

/* ─── Animations ─────────────────────────────────────────────── */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.project-card { animation: slideUp 0.4s ease backwards; }
.project-card:nth-child(1) { animation-delay: 0s; }
.project-card:nth-child(2) { animation-delay: 0.05s; }
.project-card:nth-child(3) { animation-delay: 0.1s; }
.project-card:nth-child(4) { animation-delay: 0.15s; }
.project-card:nth-child(5) { animation-delay: 0.2s; }
.project-card:nth-child(6) { animation-delay: 0.25s; }

/* ─── Responsive ─────────────────────────────────────────────── */
@media (max-width: 768px) {
    .main { padding: 2rem 1rem; }
    .main__heading { font-size: 1.8rem; }
    .projects-grid { grid-template-columns: 1fr; }
    .btn__text { display: none; }
    .style-selector__select { max-width: 120px; }
}