/**
 * DozyDo AI — Design System v2
 * Clean, AI-first productivity UI · responsive across all devices
 */
@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&display=swap');

:root {
    --font: 'DM Sans', system-ui, -apple-system, sans-serif;

    /* Palette — warm neutral + teal accent */
    --bg: #f4f2ef;
    --bg-elevated: #ffffff;
    --bg-subtle: #eae8e4;
    --surface: rgba(255, 255, 255, 0.92);
    --ink: #1a1814;
    --ink-secondary: #5c5850;
    --ink-muted: #8a857c;
    --border: rgba(26, 24, 20, 0.08);
    --border-strong: rgba(26, 24, 20, 0.14);

    --accent: #0d9488;
    --accent-hover: #0f766e;
    --accent-soft: rgba(13, 148, 136, 0.12);
    --accent-glow: rgba(13, 148, 136, 0.25);

    --work: #2563eb;
    --personal: #db2777;
    --google: #4285f4;
    --success: #16a34a;
    --danger: #dc2626;
    --warning: #d97706;

    --radius-sm: 8px;
    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 999px;

    --shadow-sm: 0 1px 2px rgba(26, 24, 20, 0.04);
    --shadow: 0 4px 16px rgba(26, 24, 20, 0.06);
    --shadow-lg: 0 12px 40px rgba(26, 24, 20, 0.1);

    --sidebar-w: 240px;
    --header-h: 60px;
    --bottom-nav-h: 64px;
    --content-max: 720px;

    --ease: cubic-bezier(0.25, 0.1, 0.25, 1);
    --spring: cubic-bezier(0.34, 1.4, 0.64, 1);
}

@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

*, *::before, *::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body.dd-ai {
    margin: 0;
    font-family: var(--font);
    font-size: 15px;
    line-height: 1.5;
    color: var(--ink);
    background: var(--bg);
    -webkit-font-smoothing: antialiased;
}

/* ── App Shell ── */
.dd-ai-app {
    display: flex;
    min-height: 100vh;
    min-height: 100dvh;
}

.dd-ai-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--sidebar-w);
    background: var(--bg-elevated);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
    transition: transform 0.3s var(--ease);
}

.dd-ai-sidebar-brand {
    padding: 20px 20px 16px;
    border-bottom: 1px solid var(--border);
}

.dd-ai-logo {
    font-size: 1.35rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    margin: 0;
    color: var(--ink);
}

.dd-ai-logo span { color: var(--accent); }

.dd-ai-user {
    font-size: 0.8rem;
    color: var(--ink-muted);
    margin: 4px 0 0;
}

.dd-ai-user strong {
    color: var(--ink-secondary);
    font-weight: 600;
}

.dd-ai-nav {
    flex: 1;
    padding: 12px 10px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.dd-ai-nav-label {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--ink-muted);
    padding: 12px 12px 6px;
}

.dd-ai-nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: var(--radius);
    border: none;
    background: transparent;
    color: var(--ink-secondary);
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    text-decoration: none;
    transition: background 0.2s, color 0.2s;
    width: 100%;
    text-align: left;
}

.dd-ai-nav-item i {
    width: 20px;
    text-align: center;
    font-size: 0.95rem;
    opacity: 0.7;
}

.dd-ai-nav-item:hover {
    background: var(--bg-subtle);
    color: var(--ink);
}

.dd-ai-nav-item.active {
    background: var(--accent-soft);
    color: var(--accent);
    font-weight: 600;
}

.dd-ai-nav-item.active i { opacity: 1; }

.dd-ai-nav-item.logout {
    color: var(--danger);
    margin-top: auto;
}

.dd-ai-nav-item.logout:hover {
    background: rgba(220, 38, 38, 0.08);
}

.dd-ai-main {
    flex: 1;
    margin-left: var(--sidebar-w);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    min-height: 100dvh;
}

.dd-ai-topbar {
    position: sticky;
    top: 0;
    z-index: 50;
    height: var(--header-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    background: var(--surface);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
}

.dd-ai-menu-btn {
    display: none;
    width: 40px;
    height: 40px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-elevated);
    cursor: pointer;
    color: var(--ink);
    font-size: 1.1rem;
}

.dd-ai-sync-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--success);
    cursor: pointer;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.dd-ai-sync-btn:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}

.dd-ai-sync-btn.syncing {
    color: var(--ink-muted);
    pointer-events: none;
}

.dd-ai-sync-btn.syncing i {
    animation: dd-spin 1s linear infinite;
}

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

.dd-ai-viewport {
    flex: 1;
    position: relative;
    overflow: hidden;
    min-height: 0;
}

@media (min-width: 1025px) {
    .dd-ai-viewport {
        height: calc(100dvh - var(--header-h));
    }
}

.dd-ai-viewport iframe {
    width: 100%;
    height: 100%;
    border: none;
    display: block;
}

/* Bottom nav — mobile/tablet portrait */
.dd-ai-bottom-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    height: var(--bottom-nav-h);
    background: var(--bg-elevated);
    border-top: 1px solid var(--border);
    z-index: 100;
    padding: 0 8px;
    padding-bottom: env(safe-area-inset-bottom, 0);
}

.dd-ai-bottom-nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-around;
    height: 100%;
    max-width: 480px;
    margin: 0 auto;
}

.dd-ai-bottom-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 3px;
    padding: 6px 12px;
    border: none;
    background: transparent;
    color: var(--ink-muted);
    font-family: inherit;
    font-size: 0.65rem;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    border-radius: var(--radius);
    transition: color 0.2s;
}

.dd-ai-bottom-item i { font-size: 1.15rem; }

.dd-ai-bottom-item.active {
    color: var(--accent);
}

/* Sidebar overlay */
.dd-ai-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(26, 24, 20, 0.4);
    z-index: 90;
    opacity: 0;
    transition: opacity 0.3s;
}

.dd-ai-overlay.visible {
    opacity: 1;
}

/* ── Responsive shell ── */
@media (max-width: 1024px) {
    .dd-ai-sidebar {
        transform: translateX(-100%);
    }

    .dd-ai-sidebar.open {
        transform: translateX(0);
    }

    .dd-ai-main {
        margin-left: 0;
    }

    .dd-ai-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
    }

    .dd-ai-overlay {
        display: block;
        pointer-events: none;
    }

    .dd-ai-overlay.visible {
        pointer-events: auto;
    }

    .dd-ai-bottom-nav {
        display: block;
    }

    .dd-ai-viewport {
        padding-bottom: var(--bottom-nav-h);
    }

    .dd-ai-nav-item.logout {
        display: none;
    }
}

@media (max-width: 767px) {
    .dd-ai-topbar {
        padding: 0 16px;
    }

    .dd-ai-sync-btn span {
        display: none;
    }
}

/* ── AI Capture Bar ── */
.dd-ai-capture {
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 16px;
    box-shadow: var(--shadow);
    margin-bottom: 24px;
}

.dd-ai-capture-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.dd-ai-capture-icon {
    width: 36px;
    height: 36px;
    border-radius: var(--radius);
    background: linear-gradient(135deg, var(--accent) 0%, #14b8a6 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 0.9rem;
}

.dd-ai-capture-title {
    font-weight: 700;
    font-size: 0.95rem;
    margin: 0;
}

.dd-ai-capture-sub {
    font-size: 0.78rem;
    color: var(--ink-muted);
    margin: 0;
}

.dd-ai-capture-input-wrap {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.dd-ai-capture-input {
    flex: 1;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 12px 16px;
    font-family: inherit;
    font-size: 0.95rem;
    resize: none;
    min-height: 48px;
    max-height: 120px;
    line-height: 1.4;
    background: var(--bg);
    color: var(--ink);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.dd-ai-capture-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-soft);
}

.dd-ai-capture-input::placeholder {
    color: var(--ink-muted);
}

.dd-ai-capture-actions {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.dd-ai-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: none;
    border-radius: var(--radius);
    font-family: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: transform 0.15s var(--spring), box-shadow 0.2s, background 0.2s;
}

.dd-ai-btn:active { transform: scale(0.97); }

.dd-ai-btn-primary {
    background: var(--accent);
    color: white;
    padding: 12px 18px;
    font-size: 0.85rem;
    box-shadow: 0 2px 8px var(--accent-glow);
}

.dd-ai-btn-primary:hover {
    background: var(--accent-hover);
}

.dd-ai-btn-icon {
    width: 44px;
    height: 44px;
    background: var(--bg-subtle);
    color: var(--ink-secondary);
    font-size: 1rem;
    border: 1px solid var(--border);
}

.dd-ai-btn-icon:hover {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: transparent;
}

.dd-ai-btn-icon.recording {
    background: var(--danger);
    color: white;
    animation: dd-pulse 1.5s ease infinite;
}

@keyframes dd-pulse {
    0%, 100% { box-shadow: 0 0 0 0 rgba(220, 38, 38, 0.4); }
    50% { box-shadow: 0 0 0 8px rgba(220, 38, 38, 0); }
}

.dd-ai-preview {
    margin-top: 12px;
    padding: 12px;
    background: var(--accent-soft);
    border-radius: var(--radius);
    display: none;
}

.dd-ai-preview.visible { display: block; }

.dd-ai-preview-label {
    font-size: 0.72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent);
    margin-bottom: 8px;
}

.dd-ai-preview-list {
    list-style: none;
    padding: 0;
    margin: 0 0 10px;
}

.dd-ai-preview-list li {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 0;
    font-size: 0.88rem;
    border-bottom: 1px solid rgba(13, 148, 136, 0.15);
}

.dd-ai-preview-list li:last-child { border-bottom: none; }

.dd-ai-preview-tag {
    font-size: 0.65rem;
    font-weight: 700;
    padding: 2px 8px;
    border-radius: var(--radius-full);
    background: var(--bg-elevated);
    color: var(--ink-muted);
    white-space: nowrap;
}

.dd-ai-preview-actions {
    display: flex;
    gap: 8px;
}

.dd-ai-btn-ghost {
    background: transparent;
    color: var(--ink-secondary);
    padding: 8px 14px;
    font-size: 0.82rem;
    border: 1px solid var(--border);
}

.dd-ai-btn-sm {
    padding: 8px 16px;
    font-size: 0.82rem;
}

/* ── Insight Card ── */
.dd-ai-insight {
    background: linear-gradient(135deg, #0d9488 0%, #0891b2 100%);
    color: white;
    border-radius: var(--radius-lg);
    padding: 16px 18px;
    margin-bottom: 20px;
    display: none;
}

.dd-ai-insight.visible { display: block; }

.dd-ai-insight-summary {
    font-weight: 700;
    font-size: 0.92rem;
    margin: 0 0 4px;
}

.dd-ai-insight-tip {
    font-size: 0.82rem;
    opacity: 0.9;
    margin: 0;
}

/* ── Date Nav ── */
.dd-ai-date-nav {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
}

.dd-ai-date-btn {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-full);
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    color: var(--ink-secondary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
}

.dd-ai-date-btn:hover {
    background: var(--accent-soft);
    color: var(--accent);
    border-color: transparent;
}

.dd-ai-date-display {
    text-align: center;
    cursor: pointer;
    min-width: 180px;
}

.dd-ai-date-display h2 {
    margin: 0;
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.dd-ai-date-display p {
    margin: 2px 0 0;
    font-size: 0.78rem;
    color: var(--ink-muted);
}

.dd-ai-date-display.today h2 { color: var(--accent); }

.dd-ai-hidden-date {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
    pointer-events: none;
}

/* ── Task List ── */
.dd-ai-task-list {
    list-style: none;
    padding: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.dd-ai-task {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 16px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    transition: box-shadow 0.2s, border-color 0.2s, opacity 0.3s;
}

.dd-ai-task:hover {
    box-shadow: var(--shadow-sm);
    border-color: var(--border-strong);
}

.dd-ai-task.completed {
    opacity: 0.55;
}

.dd-ai-task.work { border-left: 3px solid var(--work); }
.dd-ai-task.personal { border-left: 3px solid var(--personal); }
.dd-ai-task.google { border-left: 3px solid var(--google); background: #f8faff; }

.dd-ai-checkbox {
    width: 22px;
    height: 22px;
    border-radius: 6px;
    border: 2px solid var(--border-strong);
    appearance: none;
    -webkit-appearance: none;
    cursor: pointer;
    flex-shrink: 0;
    transition: all 0.2s;
    position: relative;
}

.dd-ai-checkbox:checked {
    background: var(--accent);
    border-color: var(--accent);
}

.dd-ai-checkbox:checked::after {
    content: '';
    position: absolute;
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.dd-ai-task-text {
    flex: 1;
    font-weight: 500;
    font-size: 0.92rem;
    min-width: 0;
    word-break: break-word;
}

.dd-ai-task.completed .dd-ai-task-text {
    text-decoration: line-through;
    color: var(--ink-muted);
}

.dd-ai-task-meta {
    display: flex;
    align-items: center;
    gap: 4px;
    flex-shrink: 0;
}

.dd-ai-task-btn {
    width: 32px;
    height: 32px;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--ink-muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    transition: background 0.15s, color 0.15s;
}

.dd-ai-task-btn:hover {
    background: var(--bg-subtle);
    color: var(--ink);
}

.dd-ai-task-btn.danger:hover {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger);
}

/* ── Toolbar ── */
.dd-ai-toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
    flex-wrap: wrap;
    gap: 8px;
}

.dd-ai-toolbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.dd-ai-count {
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--ink-muted);
}

.dd-ai-toggle {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.82rem;
    color: var(--ink-secondary);
    cursor: pointer;
}

.dd-ai-toggle input {
    width: 36px;
    height: 20px;
    appearance: none;
    -webkit-appearance: none;
    background: var(--bg-subtle);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    transition: background 0.2s;
}

.dd-ai-toggle input::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    transition: transform 0.2s;
    box-shadow: var(--shadow-sm);
}

.dd-ai-toggle input:checked {
    background: var(--accent);
}

.dd-ai-toggle input:checked::after {
    transform: translateX(16px);
}

.dd-ai-location {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-subtle);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    color: var(--ink-secondary);
}

.dd-ai-location select {
    border: none;
    background: transparent;
    font-family: inherit;
    font-weight: 600;
    color: var(--accent);
    cursor: pointer;
    outline: none;
}

/* ── Empty state ── */
.dd-ai-empty {
    text-align: center;
    padding: 48px 24px;
    color: var(--ink-muted);
}

.dd-ai-empty i {
    font-size: 2.5rem;
    opacity: 0.3;
    margin-bottom: 12px;
}

.dd-ai-empty p {
    margin: 0;
    font-weight: 500;
}

/* ── Tasks page layout ── */
.dd-ai-tasks-page {
    max-width: var(--content-max);
    margin: 0 auto;
    padding: 24px 20px 40px;
}

@media (max-width: 767px) {
    .dd-ai-tasks-page {
        padding: 16px 14px 32px;
    }

    .dd-ai-capture-input-wrap {
        flex-direction: column;
    }

    .dd-ai-capture-actions {
        flex-direction: row;
        width: 100%;
    }

    .dd-ai-btn-primary {
        flex: 1;
    }

    .dd-ai-date-display h2 {
        font-size: 1.05rem;
    }

    .dd-ai-task {
        padding: 12px;
        gap: 10px;
    }

    .dd-ai-task-meta .dd-ai-task-btn:not(.danger) {
        display: none;
    }
}

@media (min-width: 768px) and (max-width: 1024px) {
    .dd-ai-tasks-page {
        padding: 20px 24px 40px;
    }
}

/* ── Quick add (simple fallback) ── */
.dd-ai-quick-add {
    display: flex;
    gap: 8px;
    margin-top: 16px;
}

.dd-ai-quick-add input {
    flex: 1;
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius);
    padding: 10px 14px;
    font-family: inherit;
    font-size: 0.88rem;
    background: transparent;
    color: var(--ink);
}

.dd-ai-quick-add input:focus {
    outline: none;
    border-style: solid;
    border-color: var(--accent);
}

/* Toast */
.dd-ai-toast {
    position: fixed;
    bottom: 80px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--ink);
    color: white;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    font-weight: 500;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s, transform 0.3s var(--spring);
    z-index: 9999;
}

.dd-ai-toast.visible {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media (min-width: 1025px) {
    .dd-ai-toast {
        bottom: 32px;
    }
}