html {
    scroll-behavior: smooth;
}

:root {
    --bg-color: #020617;
    --card-bg: rgba(15, 23, 42, 0.6);
    --glass-bg: rgba(30, 41, 59, 0.4);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-purple: #a855f7;
    --accent-teal: #2dd4bf;
    --accent-glow: rgba(168, 85, 247, 0.4);
    --accent-red: #f87171;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.8);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, system-ui, sans-serif;
}

body {
    background: var(--bg-color);
    background-image:
        radial-gradient(at 0% 0%, rgba(168, 85, 247, 0.15) 0px, transparent 50%),
        radial-gradient(at 100% 100%, rgba(45, 212, 191, 0.15) 0px, transparent 50%);
    color: var(--text-primary);
    overflow-x: hidden;
    overflow-y: auto;
    height: auto;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

main {
    height: 100vh;
    overflow: hidden;
    position: relative;
    flex-shrink: 0;
}

/* Header */
header {
    height: 64px;
    background: rgba(2, 6, 23, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 40px;
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
}

.logo {
    font-weight: 800;
    font-size: 22px;
    letter-spacing: -0.03em;
    background: linear-gradient(90deg, var(--accent-purple), var(--accent-teal));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

nav a {
    text-decoration: none;
    color: var(--text-primary);
    font-size: 14px;
    font-weight: 500;
    margin-left: 24px;
    transition: color 0.3s;
}

nav a:hover {
    color: var(--accent-purple);
}

.btn-login {
    padding: 8px 20px;
    border-radius: 7px;
    color: white !important;
    box-shadow: 0 0 20px var(--accent-glow);
}

/* Base Hamburger menu styles (hidden on desktop) */
.menu-toggle {
    display: none;
}
.menu-btn {
    display: none;
}

/* Main Container */
main {
    flex: 1;
    margin-top: 64px;
    position: relative;
    overflow: hidden;
}

#tree-container {
    width: 100%;
    height: 100%;
}

/* Unified Top Toolbar (sits below fixed header) */
.top-toolbar {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 100;
    pointer-events: none;
    /* Let clicks pass through gaps */
}

.top-toolbar>* {
    pointer-events: all;
}

/* Glass Search Bar */
.search-container {
    flex: 0 0 auto;
}

.search-input {
    width: 320px;
    padding: 14px 24px;
    border-radius: 7px;
    border: 1px solid var(--border-color);
    background: var(--glass-bg);
    color: white;
    font-size: 15px;
    outline: none;
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow);
    transition: all 0.3s;
}

.search-input:focus {
    border-color: var(--accent-purple);
    box-shadow: 0 0 20px var(--accent-glow);
}

/* Details Panel - Dark Glass */
.details-panel {
    position: absolute;
    right: -450px;
    top: 24px;
    bottom: 24px;
    width: 440px;
    background: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(32px);
    border-radius: 7px;
    border: 1px solid var(--border-color);
    box-shadow: 0 40px 100px rgba(0, 0, 0, 0.6);
    z-index: 500;
    transition: right 0.8s cubic-bezier(0.16, 1, 0.3, 1);
    padding: 60px 48px;
    overflow-y: auto;
    scrollbar-width: thin;
    scrollbar-color: var(--accent-purple) transparent;
}

.details-panel.active {
    right: 24px;
}

.close-panel-btn {
    position: absolute;
    top: 24px;
    right: 24px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-secondary);
    width: 40px;
    height: 40px;
    border-radius: 7px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s;
    z-index: 10;
}

.close-panel-btn:hover {
    background: rgba(239, 68, 68, 0.15);
    border-color: rgba(239, 68, 68, 0.3);
    color: #f87171;
    transform: rotate(90deg);
}

.profile-photo {
    width: 140px;
    height: 140px;
    border-radius: 7px;
    /* Square with large rounding - Gen Z style */
    object-fit: cover;
    margin-bottom: 32px;
    border: 2px solid var(--accent-purple);
    box-shadow: 0 0 30px var(--accent-glow);
}

.profile-name {
    font-size: 32px;
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 12px;
}

.profile-dates {
    font-size: 15px;
    color: var(--text-secondary);
    margin-bottom: 32px;
    background: var(--glass-bg);
    padding: 6px 12px;
    border-radius: 7px;
    display: inline-block;
}

.profile-bio {
    font-size: 16px;
    line-height: 1.6;
    color: #e2e8f0;
}

/* Location block in details panel */
.profile-location {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 8px;
}

.profile-location-row {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 13px;
    color: var(--text-secondary);
    background: var(--glass-bg);
    padding: 8px 12px;
    border-radius: 7px;
    border: 1px solid var(--border-color);
}

.profile-location-row svg {
    flex-shrink: 0;
    stroke: var(--accent-teal);
}

.profile-location-row strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ── Multi-Spouse Chip Picker ────────────────────────────── */
.spouse-picker {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border-color);
    border-radius: 7px;
    padding: 12px 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.spouse-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}
.spouse-chips:not(:empty) {
    margin-bottom: 12px;
}

.spouse-chip {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border-radius: 100px;
    background: rgba(168, 85, 247, 0.15);
    border: 1px solid rgba(168, 85, 247, 0.5);
    color: var(--text-primary);
    font-size: 13px;
    font-weight: 500;
}

.chip-remove {
    background: none;
    border: none;
    color: rgba(168, 85, 247, 0.8);
    font-size: 16px;
    cursor: pointer;
    padding: 0;
    line-height: 1;
    transition: color 0.2s;
}

.chip-remove:hover {
    color: #f87171;
}

.spouse-add-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.spouse-add-row input,
.spouse-add-row select {
    flex: 1;
    min-width: 0;
    margin: 0;
    height: 45px;
}

.btn-add-spouse {
    padding: 0 24px;
    height: 45px;
    border-radius: 7px;
    background: rgba(168, 85, 247, 0.2);
    border: 1px solid rgba(168, 85, 247, 0.5);
    color: var(--accent-purple);
    font-size: 14px;
    font-weight: 700;
    cursor: pointer;
    white-space: nowrap;
    transition: all 0.2s;
    font-family: 'Inter', sans-serif;
}

.btn-add-spouse:hover {
    background: rgba(168, 85, 247, 0.35);
}

/* Tree Node Hover States */
.tree-node-card:hover {
    transform: scale(1.05);
    background: rgba(30, 41, 59, 0.9) !important;
    border-color: var(--accent-purple) !important;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.5), 0 0 15px var(--accent-glow) !important;
}

/* Tree Node Styling Override */
.f3-link {
    stroke: var(--accent-purple) !important;
    stroke-width: 2 !important;
    fill: none !important;
    stroke-opacity: 0.6;
    filter: drop-shadow(0 0 5px var(--accent-purple));
    transition: all 0.5s ease;
}

.tree-node-card:hover {
    transform: translateY(-5px) scale(1.02);
    border-color: var(--accent-teal) !important;
    box-shadow: 0 15px 30px rgba(168, 85, 247, 0.3) !important;
}

.tree-node-card.is-collapsed {
    border-style: dashed !important;
    opacity: 0.8;
}

.collapse-toggle:hover {
    transform: translateX(-50%) scale(1.2);
    background: var(--accent-teal) !important;
}

/* --- Phase 2: Heritage Expansion Components --- */

.file-upload-wrapper {
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.file-upload-wrapper:hover {
    border-color: rgba(45, 212, 191, 0.4) !important;
    background: rgba(168, 85, 247, 0.05) !important;
}

.file-upload-wrapper:focus-within {
    border-color: var(--accent-teal) !important;
    box-shadow: 0 0 15px rgba(45, 212, 191, 0.2);
}

.upload-placeholder svg {
    transition: transform 0.3s ease;
}

.file-upload-wrapper:hover .upload-placeholder svg {
    transform: translateY(-2px);
    color: var(--accent-teal);
}

/* Floating Action Buttons */
.audio-pulse-btn {
    position: fixed;
    right: 40px;
    width: 52px;
    height: 52px;
    border-radius: 50%;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--accent-purple);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 0 20px var(--accent-glow);
    z-index: 900;
    transition: all 0.3s;
}

#audio-toggle {
    bottom: 40px;
}

#download-souvenir {
    bottom: 15px;
    border-color: var(--accent-teal);
    box-shadow: 0 0 20px rgba(45, 212, 191, 0.3);
}

.audio-pulse-btn:hover {
    transform: scale(1.1);
    box-shadow: 0 0 30px var(--accent-purple);
}

.audio-bars {
    display: flex;
    align-items: center;
    /* Center bars vertically */
    gap: 4px;
    height: 24px;
}

.audio-bars span {
    width: 4px;
    background: var(--accent-purple);
    border-radius: 100px;
    height: 8px;
    /* Default height */
    animation: bar-pulse 0.8s ease-in-out infinite;
    animation-play-state: paused;
}

#audio-toggle.active .audio-bars span {
    animation-play-state: running;
}

@keyframes bar-pulse {

    0%,
    100% {
        height: 5px;
    }

    50% {
        height: 20px;
    }
}

/* Breadcrumbs Container */
.breadcrumbs-container {
    flex: 0 0 auto;
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    padding: 8px 20px;
    border-radius: 7px;
    border: 1px solid var(--border-color);
    font-size: 13px;
    display: flex;
    align-items: center;
    gap: 10px;
    box-shadow: var(--shadow);
}

.breadcrumb-item {
    color: var(--text-primary);
    cursor: pointer;
    transition: color 0.2s;
    font-weight: 500;
}

.breadcrumb-item:hover {
    color: var(--accent-teal);
}

.breadcrumb-separator {
    color: var(--text-secondary);
    opacity: 0.5;
}

.breadcrumb-root {
    font-weight: 800;
    color: var(--accent-purple);
    cursor: pointer;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Bento Indicator */
.bento-scroll-hint {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-secondary);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.2em;
    animation: bounce 2s infinite;
}

@keyframes bounce {

    0%,
    20%,
    50%,
    80%,
    100% {
        transform: translateY(0) translateX(-50%);
    }

    40% {
        transform: translateY(-10px) translateX(-50%);
    }

    60% {
        transform: translateY(-5px) translateX(-50%);
    }
}

/* ==========================================
   Mobile Responsiveness Media Queries
   ========================================== */

/* Tablet & Mobile Breakpoints */
@media (max-width: 992px) {
    .bento-grid-heritage {
        grid-template-columns: repeat(2, 1fr) !important;
    }
    .span-3 {
        grid-column: span 2 !important;
    }
}

@media (max-width: 768px) {
    /* Mobile Hamburger Menu */
    header {
        height: 64px !important;
        min-height: 64px !important;
        flex-direction: row !important;
        justify-content: space-between !important;
        align-items: center !important;
        padding: 0 24px !important;
    }

    .menu-btn {
        display: flex !important;
        flex-direction: column;
        justify-content: space-between;
        width: 24px;
        height: 18px;
        cursor: pointer;
        z-index: 1010;
    }

    .menu-btn span {
        display: block;
        width: 100%;
        height: 2px;
        background-color: var(--text-primary);
        border-radius: 2px;
        transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    }

    /* Transform lines to X when checked */
    .menu-toggle:checked ~ .menu-btn span:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }

    .menu-toggle:checked ~ .menu-btn span:nth-child(2) {
        opacity: 0;
        transform: scale(0);
    }

    .menu-toggle:checked ~ .menu-btn span:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }

    header nav {
        position: fixed !important;
        top: 64px !important;
        left: 0 !important;
        width: 100% !important;
        height: calc(100vh - 64px) !important;
        background: rgba(2, 6, 23, 0.98) !important;
        backdrop-filter: blur(24px) !important;
        display: flex !important;
        flex-direction: column !important;
        align-items: center !important;
        justify-content: center !important;
        gap: 32px !important;
        padding: 40px !important;
        transform: translateY(-150%) !important;
        transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease !important;
        z-index: 999 !important;
        opacity: 0 !important;
        pointer-events: none !important;
        border-bottom: 1px solid var(--border-color) !important;
    }

    header nav a {
        margin-left: 0 !important;
        font-size: 20px !important;
        font-weight: 600 !important;
        color: var(--text-primary) !important;
        transition: color 0.3s !important;
        text-align: center !important;
        width: 100% !important;
        padding: 12px 0 !important;
    }

    header nav a:hover {
        color: var(--accent-purple) !important;
    }

    .menu-toggle:checked ~ nav {
        transform: translateY(0) !important;
        opacity: 1 !important;
        pointer-events: all !important;
    }

    /* Main offset adjusts to wrap header height */
    main {
        margin-top: 64px !important;
    }

    /* Page container adjustments for responsive spacing */
    .page-container, .manage-container, .dashboard-container, .admin-container, .analyst-container, .depth-container {
        margin-top: 100px !important;
        padding: 0 16px !important;
    }

    /* Landing Hero page */
    .landing-hero {
        padding: 120px 16px 40px !important;
    }
    .hero-stats {
        display: grid !important;
        grid-template-columns: repeat(auto-fit, minmax(90px, 1fr)) !important;
        width: 100% !important;
        gap: 20px !important;
    }

    /* Bento Grid */
    .bento-container {
        padding: 40px 16px !important;
    }
    .bento-grid-heritage {
        grid-template-columns: 1fr !important;
        gap: 16px !important;
    }
    .span-2, .span-3 {
        grid-column: span 1 !important;
    }
    .spotlight-card {
        padding: 24px !important;
    }
    .spotlight-content {
        flex-direction: column !important;
        gap: 24px !important;
        text-align: center !important;
    }
    .spotlight-avatar-frame {
        width: 140px !important;
        height: 140px !important;
        margin: 0 auto !important;
    }

    /* Interactive Tree Toolbar */
    .top-toolbar {
        position: absolute !important;
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
        height: auto !important;
        flex-direction: column !important;
        gap: 12px !important;
        padding: 12px 16px !important;
        background: rgba(15, 23, 42, 0.9) !important;
        backdrop-filter: blur(16px) !important;
        border-bottom: 1px solid var(--border-color) !important;
        pointer-events: all !important;
    }
    .search-container, .search-input {
        width: 100% !important;
    }
    .filter-controls {
        width: 100% !important;
        justify-content: flex-start !important;
        overflow-x: auto !important;
        padding-bottom: 6px !important;
        scrollbar-width: none !important;
    }
    .filter-controls::-webkit-scrollbar {
        display: none;
    }
    .filter-select {
        flex-shrink: 0 !important;
        max-width: none !important;
        flex-grow: 1 !important;
    }
    .breadcrumbs-container {
        width: 100% !important;
        overflow-x: auto !important;
        white-space: nowrap !important;
        scrollbar-width: none !important;
    }
    .breadcrumbs-container::-webkit-scrollbar {
        display: none;
    }

    /* Details Drawer Panel on Mobile */
    .details-panel {
        width: 100% !important;
        right: -100% !important;
        top: 0 !important;
        bottom: 0 !important;
        border-radius: 0 !important;
        padding: 60px 24px 80px !important;
        z-index: 1000 !important;
    }
    .details-panel.active {
        right: 0 !important;
    }
    .close-panel-btn {
        top: 16px !important;
        right: 16px !important;
    }
    
    /* Suggestions & Action Buttons bottom bar dock */
    .suggestion-trigger-tree {
        position: fixed !important;
        bottom: 0 !important;
        height: 56px !important;
        border-radius: 0 !important;
        padding: 0 !important;
        font-size: 14px !important;
        z-index: 1100 !important;
        margin: 0 !important;
        box-shadow: none !important;
        border: none !important;
        justify-content: center !important;
        align-items: center !important;
    }
    #openCorrectionModal {
        left: 0 !important;
        right: auto !important;
        width: 50% !important;
        bottom: 0 !important;
        border-right: 1px solid rgba(255, 255, 255, 0.1) !important;
    }
    #openAdditionModal {
        right: 0 !important;
        left: auto !important;
        width: 50% !important;
        bottom: 0 !important;
    }
    .audio-portal-container {
        z-index: 900 !important;
    }
    .audio-pulse-btn {
        z-index: 900 !important;
        right: 20px !important;
    }
    #audio-toggle {
        bottom: 20px !important;
    }
    #download-souvenir {
        bottom: 80px !important;
    }

    /* Oriki Page mobile responsiveness */
    .oriki-hero {
        padding: 120px 16px 40px !important;
    }
    .oriki-hero h1 {
        font-size: 38px !important;
    }
    .oriki-container {
        padding: 32px 20px !important;
        margin-bottom: 60px !important;
    }
    .oriki-content {
        font-size: 18px !important;
        line-height: 1.8 !important;
    }
    .oriki-content::first-letter {
        font-size: 64px !important;
    }

    /* About page hero mobile sizing */
    .about-wrapper h1 {
        font-size: 32px !important;
    }

    /* Auth login and reset page */
    .login-card {
        padding: 32px 20px !important;
        margin: 20px 16px !important;
        border-radius: 20px !important;
    }
    .reset-card {
        padding: 32px 20px !important;
        margin: 20px 16px !important;
        border-radius: 20px !important;
    }

    /* Timeline Page Suggest Button & Audio Portal stacking */
    .suggestion-trigger {
        position: fixed !important;
        left: 16px !important;
        right: 16px !important;
        bottom: 16px !important;
        width: calc(100% - 32px) !important;
        padding: 14px 20px !important;
        font-size: 14px !important;
        text-align: center !important;
        box-shadow: 0 10px 25px var(--accent-glow) !important;
        z-index: 2001 !important;
    }
    .suggestion-trigger ~ .audio-portal-container {
        bottom: 80px !important;
        left: 16px !important;
    }
}

@media (max-width: 480px) {
    /* Extra spacing/resizing for small screens */
    .logo {
        font-size: 18px !important;
    }
    .landing-hero h1 {
        font-size: 34px !important;
    }
    .landing-hero p {
        font-size: 16px !important;
    }
}