/**
 * Talent Graph - Styles
 * Apple-inspired Soft Modern with Glassmorphism
 */

/* Montserrat Font Family */
@font-face {
    font-family: 'Montserrat';
    src: url('/fonts/Montserrat-Light.ttf') format('truetype');
    font-weight: 300;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Montserrat';
    src: url('/fonts/Montserrat-Regular.ttf') format('truetype');
    font-weight: 400;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Montserrat';
    src: url('/fonts/Montserrat-Medium.ttf') format('truetype');
    font-weight: 500;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Montserrat';
    src: url('/fonts/Montserrat-SemiBold.ttf') format('truetype');
    font-weight: 600;
    font-style: normal;
    font-display: swap;
}

@font-face {
    font-family: 'Montserrat';
    src: url('/fonts/Montserrat-Bold.ttf') format('truetype');
    font-weight: 700;
    font-style: normal;
    font-display: swap;
}

/* Dark theme (default) - Apple-inspired with enhanced glassmorphism */
:root {
    --primary: #0A84FF;
    --primary-hover: #409CFF;
    --secondary: #8E8E93;
    --success: #30D158;
    --warning: #FFD60A;
    --danger: #FF453A;
    --info: #64D2FF;

    --bg-primary: #000000;
    --bg-secondary: rgba(28, 28, 30, 0.85);
    --bg-tertiary: rgba(58, 58, 60, 0.6);
    --bg-glass: rgba(30, 30, 32, 0.65);
    --bg-glass-highlight: linear-gradient(135deg, rgba(255,255,255,0.1) 0%, rgba(255,255,255,0.02) 100%);
    --bg-graph: linear-gradient(135deg, #0a0a0c 0%, #121218 50%, #0d0d12 100%);

    --text-primary: #FFFFFF;
    --text-secondary: rgba(235, 235, 245, 0.6);
    --text-muted: rgba(235, 235, 245, 0.3);

    --border-color: rgba(255, 255, 255, 0.08);
    --border-glass: rgba(255, 255, 255, 0.15);
    --border-glass-highlight: rgba(255, 255, 255, 0.25);

    --shadow: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 30px rgba(10, 132, 255, 0.2);
    --shadow-inner: inset 0 1px 0 rgba(255, 255, 255, 0.1);

    --radius: 12px;
    --radius-lg: 16px;
    --radius-xl: 22px;

    --blur: blur(24px);
    --blur-heavy: blur(48px);

    --transition: all 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

/* Light theme - Apple-inspired */
[data-theme="light"] {
    --primary: #007AFF;
    --primary-hover: #0051D5;
    --secondary: #8E8E93;
    --success: #34C759;
    --warning: #FF9500;
    --danger: #FF3B30;
    --info: #5AC8FA;

    --bg-primary: #F2F2F7;
    --bg-secondary: rgba(255, 255, 255, 0.85);
    --bg-tertiary: rgba(240, 240, 245, 0.8);
    --bg-glass: rgba(255, 255, 255, 0.65);
    --bg-glass-highlight: linear-gradient(135deg, rgba(255,255,255,0.9) 0%, rgba(255,255,255,0.4) 100%);
    --bg-graph: linear-gradient(135deg, #e8e8ed 0%, #d8d8de 50%, #f0f0f5 100%);

    --text-primary: #1D1D1F;
    --text-secondary: rgba(60, 60, 67, 0.6);
    --text-muted: rgba(60, 60, 67, 0.3);

    --border-color: rgba(0, 0, 0, 0.04);
    --border-glass: rgba(0, 0, 0, 0.08);
    --border-glass-highlight: rgba(255, 255, 255, 0.8);

    --shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 12px 48px rgba(0, 0, 0, 0.1);
    --shadow-glow: 0 0 30px rgba(0, 122, 255, 0.15);
    --shadow-inner: inset 0 1px 0 rgba(255, 255, 255, 0.9);
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    font-weight: 400;
    letter-spacing: -0.01em;
}

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

/* Full-screen canvas container */
.canvas-container {
    position: relative;
    width: 100%;
    height: 100vh;
    overflow: hidden;
}

/* Floating Logo (top-left) */
.logo-circle {
    position: absolute;
    top: 1.25rem;
    left: 1.25rem;
    z-index: 50;
    width: 70px;
    height: 70px;
    border-radius: 50%;
    overflow: hidden;
    border: 3px solid var(--border-glass-highlight);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4), var(--shadow-glow);
    transition: var(--transition);
    cursor: pointer;
}

.logo-circle:hover {
    transform: scale(1.05);
    box-shadow: 0 6px 28px rgba(0, 0, 0, 0.5), 0 0 40px rgba(10, 132, 255, 0.3);
}

.logo-circle img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Floating Actions (top-right) */
.floating-actions {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    display: flex;
    gap: 0.625rem;
    align-items: center;
    background: var(--bg-glass);
    background-image: var(--bg-glass-highlight);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-glass-highlight);
    box-shadow: var(--shadow-lg), var(--shadow-inner);
    transition: var(--transition);
}

.floating-actions:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg), var(--shadow-glow), var(--shadow-inner);
}

/* Buttons - Montserrat style */
.btn {
    font-family: 'Montserrat', sans-serif;
    padding: 0.5rem 1rem;
    border: none;
    border-radius: var(--radius);
    font-size: 0.8125rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    letter-spacing: 0.02em;
}

.btn-primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(10, 132, 255, 0.3);
}
.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(10, 132, 255, 0.4);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 1px solid var(--border-glass);
}
.btn-secondary:hover {
    background: var(--border-color);
    transform: translateY(-1px);
    border-color: var(--border-glass-highlight);
}

.btn-danger {
    background: var(--danger);
    color: white;
    box-shadow: 0 2px 8px rgba(255, 69, 58, 0.3);
}
.btn-danger:hover {
    background: #FF6961;
    transform: translateY(-1px);
}

.btn-icon {
    background: transparent;
    font-size: 1.25rem;
    padding: 0.5rem;
    border-radius: 50%;
}
.btn-icon:hover {
    background: var(--bg-tertiary);
    transform: scale(1.05);
}

/* Theme toggle - Pill style */
.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0.875rem;
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--border-glass);
    border-radius: 20px;
    cursor: pointer;
    font-size: 0.875rem;
    color: var(--text-primary);
    transition: var(--transition);
}
.theme-toggle:hover {
    background: var(--bg-tertiary);
    transform: scale(1.02);
}

.btn-close {
    width: 28px;
    height: 28px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: 50%;
    font-size: 1rem;
    cursor: pointer;
    color: var(--text-secondary);
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}
.btn-close:hover {
    background: var(--danger);
    color: white;
}

/* Graph Container - Full screen */
#graph-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-graph);
}

/* Legends container */
.legends-container {
    position: absolute;
    bottom: 1.5rem;
    left: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    z-index: 50;
}

/* Legend - Enhanced Glassmorphism */
.legend {
    background: var(--bg-glass);
    background-image: var(--bg-glass-highlight);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg), var(--shadow-inner);
    border: 1px solid var(--border-glass-highlight);
    transition: var(--transition);
}

.legend:hover {
    box-shadow: var(--shadow-lg), var(--shadow-glow), var(--shadow-inner);
    transform: translateY(-2px);
    border-color: var(--primary);
}

.legend h4 {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
    margin-bottom: 0.625rem;
    font-weight: 600;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    margin-top: 0.375rem;
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: var(--transition);
}

.legend-item:hover {
    color: var(--text-primary);
}

.legend-color {
    width: 14px;
    height: 14px;
    border-radius: 4px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}
.legend-color.circle {
    border-radius: 50%;
    border: 2px solid;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

/* Detail Panel - Enhanced Glassmorphism */
.detail-panel {
    position: absolute;
    top: 0;
    right: 0;
    width: 380px;
    height: 100%;
    background: var(--bg-glass);
    background-image: var(--bg-glass-highlight);
    backdrop-filter: var(--blur-heavy);
    -webkit-backdrop-filter: var(--blur-heavy);
    /* No border - floating panel */
    box-shadow: -12px 0 48px rgba(0, 0, 0, 0.3), var(--shadow-inner);
    transform: translateX(0);
    transition: transform 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
    z-index: 100;
    overflow-y: auto;
}

.detail-panel.hidden { transform: translateX(100%); }

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-glass);
    position: sticky;
    top: 0;
    background: var(--bg-glass);
    background-image: var(--bg-glass-highlight);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
}

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.panel-content { padding: 1.5rem; }

.detail-section { margin-bottom: 1.5rem; }
.detail-section h4 {
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.375rem;
    font-weight: 600;
}
.detail-section p { font-size: 0.9375rem; }

.panel-actions {
    margin-top: 2rem;
    padding-top: 1.25rem;
    border-top: 1px solid var(--border-glass);
    display: flex;
    gap: 0.75rem;
}

.panel-actions .btn {
    flex: 1;
}

/* Badges & Tags - Apple pill style with icons */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.875rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: capitalize;
    letter-spacing: -0.01em;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
}

.badge.available_now {
    background: linear-gradient(135deg, rgba(48, 209, 88, 0.2), rgba(48, 209, 88, 0.1));
    color: var(--success);
    border: 1px solid rgba(48, 209, 88, 0.3);
}
.badge.available_now::before {
    content: '●';
    font-size: 0.5rem;
    animation: pulse 2s infinite;
}
.badge.available_soon {
    background: linear-gradient(135deg, rgba(255, 214, 10, 0.2), rgba(255, 214, 10, 0.1));
    color: var(--warning);
    border: 1px solid rgba(255, 214, 10, 0.3);
}
.badge.available_soon::before {
    content: '◐';
    font-size: 0.625rem;
}
.badge.unavailable {
    background: linear-gradient(135deg, rgba(255, 69, 58, 0.2), rgba(255, 69, 58, 0.1));
    color: var(--danger);
    border: 1px solid rgba(255, 69, 58, 0.3);
}
.badge.unavailable::before {
    content: '○';
    font-size: 0.5rem;
}
.badge.unknown {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}
.badge.unknown::before {
    content: '?';
    font-size: 0.625rem;
    font-weight: 700;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

/* Rating display */
.rating-display {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.rating-stars {
    color: #FFD60A;
    font-size: 1rem;
    letter-spacing: 1px;
}

.rating-value {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
}

.tags { display: flex; flex-wrap: wrap; gap: 0.375rem; }

.tag {
    display: inline-block;
    padding: 0.25rem 0.625rem;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 0.75rem;
    color: var(--text-secondary);
    transition: var(--transition);
}

.tag:hover {
    background: var(--border-color);
    color: var(--text-primary);
}

.tag.required {
    background: rgba(10, 132, 255, 0.15);
    color: var(--primary);
}
.tag.preferred {
    background: rgba(191, 90, 242, 0.15);
    color: #BF5AF2;
}

/* Links */
.links { display: flex; gap: 0.5rem; margin-top: 0.5rem; }

.link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.5rem 0.875rem;
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--border-glass);
    color: var(--primary);
    text-decoration: none;
    border-radius: var(--radius);
    font-size: 0.875rem;
    transition: var(--transition);
}
.link-btn:hover {
    background: var(--bg-tertiary);
    transform: translateY(-1px);
}

/* LinkedIn URL display */
.link-url {
    color: var(--primary);
    font-size: 0.875rem;
    text-decoration: none;
    word-break: break-all;
    transition: var(--transition);
}
.link-url:hover {
    color: var(--primary-hover);
    text-decoration: underline;
}

.no-data {
    color: var(--text-muted);
    font-size: 0.9375rem;
}

/* Modal - Glassmorphism */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 200;
}

.modal.hidden { display: none; }

.modal-content {
    background: var(--bg-glass);
    background-image: var(--bg-glass-highlight);
    backdrop-filter: var(--blur-heavy);
    -webkit-backdrop-filter: var(--blur-heavy);
    border: 1px solid var(--border-glass-highlight);
    border-radius: var(--radius-xl);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5), var(--shadow-inner);
    animation: modalSlideIn 0.3s cubic-bezier(0.25, 0.1, 0.25, 1);
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: scale(0.95) translateY(10px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal-wide { max-width: 640px; }

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-glass);
}

.modal-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    padding: 1.5rem;
    border-top: 1px solid var(--border-glass);
}

/* Forms - Apple style inputs */
form { padding: 1.5rem; }

.form-group { margin-bottom: 1.25rem; }

.form-group label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    font-size: 0.9375rem;
    color: var(--text-primary);
    transition: var(--transition);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(10, 132, 255, 0.15);
    background: var(--bg-secondary);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }

/* Search Results */
.search-results {
    border-top: 1px solid var(--border-glass);
    padding: 1.5rem;
    max-height: 300px;
    overflow-y: auto;
}

.search-results h3 {
    font-size: 1rem;
    margin-bottom: 0.875rem;
    font-weight: 600;
}

.result-item {
    padding: 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    margin-bottom: 0.625rem;
    cursor: pointer;
    transition: var(--transition);
    border: 1px solid transparent;
}

.result-item:hover {
    background: var(--bg-secondary);
    border-color: var(--border-glass);
    transform: translateY(-1px);
}

.result-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 0.375rem; }

.score {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--success);
    background: rgba(48, 209, 88, 0.15);
    padding: 0.25rem 0.625rem;
    border-radius: 9999px;
}

.result-justification {
    font-size: 0.8125rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    line-height: 1.5;
}

.result-skills { display: flex; flex-wrap: wrap; gap: 0.375rem; }

.no-results {
    color: var(--text-muted);
    font-style: italic;
    text-align: center;
    padding: 2rem 1rem;
}

/* Toast - Apple style notification */
.toast {
    position: fixed;
    bottom: 1.5rem;
    right: 1.5rem;
    padding: 1rem 1.5rem;
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border: 1px solid var(--border-glass);
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    z-index: 300;
    animation: toastSlideIn 0.4s cubic-bezier(0.25, 0.1, 0.25, 1);
    font-weight: 500;
}

.toast.hidden { display: none; }

.toast.success {
    background: rgba(48, 209, 88, 0.9);
    border-color: rgba(48, 209, 88, 0.3);
    color: white;
}
.toast.error {
    background: rgba(255, 69, 58, 0.9);
    border-color: rgba(255, 69, 58, 0.3);
    color: white;
}
.toast.info {
    background: rgba(10, 132, 255, 0.9);
    border-color: rgba(10, 132, 255, 0.3);
    color: white;
}

@keyframes toastSlideIn {
    from {
        transform: translateY(20px) scale(0.95);
        opacity: 0;
    }
    to {
        transform: translateY(0) scale(1);
        opacity: 1;
    }
}

/* Custom Scrollbar - Apple style */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* Node Size Controls (bottom-right, collapsible) */
.node-size-controls {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    z-index: 50;
    display: flex;
    flex-direction: column;
    background: var(--bg-glass);
    background-image: var(--bg-glass-highlight);
    backdrop-filter: var(--blur);
    -webkit-backdrop-filter: var(--blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-glass-highlight);
    box-shadow: var(--shadow-lg), var(--shadow-inner);
    transition: var(--transition);
    min-width: 220px;
    overflow: hidden;
}

.node-size-controls:hover {
    box-shadow: var(--shadow-lg), var(--shadow-glow), var(--shadow-inner);
    border-color: var(--primary);
}

/* Candidate Count Display */
.candidate-count {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border-glass);
    background: linear-gradient(135deg, rgba(10, 132, 255, 0.1) 0%, rgba(94, 92, 230, 0.1) 100%);
}

.candidate-count .count-value {
    font-family: 'Montserrat', sans-serif;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    line-height: 1;
    transition: transform 0.2s ease, color 0.2s ease;
}

.candidate-count .count-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.6875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

/* Animation for count updates */
.candidate-count .count-value.updated {
    transform: scale(1.2);
    color: var(--success);
}

/* Toggle button */
.controls-toggle {
    display: flex;
    align-items: center;
    gap: 0.625rem;
    padding: 0.75rem 1rem;
    background: transparent;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    font-family: 'Montserrat', sans-serif;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    transition: var(--transition);
    width: 100%;
}

.controls-toggle:hover {
    background: var(--bg-glass);
}

.toggle-icon {
    font-size: 1rem;
}

.toggle-label {
    flex: 1;
    text-align: left;
}

.toggle-arrow {
    font-size: 0.625rem;
    transition: transform 0.2s ease;
}

.node-size-controls:not(.collapsed) .toggle-arrow {
    transform: rotate(180deg);
}

/* Collapsible content */
.controls-content {
    display: flex;
    flex-direction: column;
    gap: 0.875rem;
    padding: 0.25rem 1rem 1rem;
    max-height: 400px;
    opacity: 1;
    transition: max-height 0.3s ease, opacity 0.2s ease, padding 0.3s ease;
}

.node-size-controls.collapsed .controls-content {
    max-height: 0;
    opacity: 0;
    padding: 0 1rem;
    overflow: hidden;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.control-group label {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.control-label {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.6875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
}

.control-value {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--primary);
    background: rgba(10, 132, 255, 0.15);
    padding: 0.15rem 0.5rem;
    border-radius: 5px;
    min-width: 45px;
    text-align: center;
}

/* Custom Slider - Apple style */
.slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 5px;
    background: var(--bg-tertiary);
    border-radius: 2.5px;
    outline: none;
    cursor: pointer;
    transition: var(--transition);
}

.slider:hover {
    background: var(--border-color);
}

/* Slider Track */
.slider::-webkit-slider-runnable-track {
    height: 5px;
    border-radius: 2.5px;
    background: linear-gradient(to right, var(--primary) 0%, var(--primary) var(--progress, 50%), var(--bg-tertiary) var(--progress, 50%), var(--bg-tertiary) 100%);
}

.slider::-moz-range-track {
    height: 5px;
    border-radius: 2.5px;
    background: var(--bg-tertiary);
}

.slider::-moz-range-progress {
    height: 5px;
    border-radius: 2.5px;
    background: var(--primary);
}

/* Slider Thumb */
.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 16px;
    height: 16px;
    background: white;
    border-radius: 50%;
    cursor: pointer;
    margin-top: -5.5px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 0, 0, 0.1);
    transition: transform 0.15s cubic-bezier(0.25, 0.1, 0.25, 1), box-shadow 0.15s ease;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(0, 0, 0, 0.1), var(--shadow-glow);
}

.slider::-webkit-slider-thumb:active {
    transform: scale(1.1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3), 0 0 0 3px rgba(10, 132, 255, 0.3);
}

.slider::-moz-range-thumb {
    width: 16px;
    height: 16px;
    background: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3), 0 0 0 1px rgba(0, 0, 0, 0.1);
    transition: transform 0.15s cubic-bezier(0.25, 0.1, 0.25, 1), box-shadow 0.15s ease;
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.15);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.4), 0 0 0 1px rgba(0, 0, 0, 0.1);
}

.slider::-moz-range-thumb:active {
    transform: scale(1.1);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3), 0 0 0 3px rgba(10, 132, 255, 0.3);
}

/* Hidden utility */
.hidden { display: none !important; }

/* Responsive */
@media (max-width: 768px) {
    .logo-circle {
        top: 0.75rem;
        left: 0.75rem;
        width: 50px;
        height: 50px;
    }
    .floating-actions {
        top: 0.75rem;
        right: 0.75rem;
        padding: 0.5rem 0.625rem;
        gap: 0.5rem;
    }
    .floating-actions .btn {
        padding: 0.375rem 0.75rem;
        font-size: 0.75rem;
    }
    .detail-panel { width: 100%; }
    .form-row { grid-template-columns: 1fr; }
    .modal-content {
        margin: 1rem;
        max-height: calc(100vh - 2rem);
        border-radius: var(--radius-lg);
    }
    .legends-container {
        bottom: 1rem;
        left: 1rem;
    }
    .legend {
        padding: 0.75rem 1rem;
    }
    .node-size-controls {
        bottom: 1rem;
        right: 1rem;
        min-width: 160px;
        padding: 0.75rem 1rem;
    }
    .control-label {
        font-size: 0.625rem;
    }
    .control-value {
        font-size: 0.6875rem;
        min-width: 45px;
    }
}

/* ============================================
   AUTH & USER MANAGEMENT STYLES
   ============================================ */

/* Fullscreen Overlay */
.fullscreen-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: var(--bg-graph);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    animation: fadeIn 0.3s ease;
}

.fullscreen-overlay.hidden {
    display: none;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Login Container */
.login-container {
    text-align: center;
    padding: 3rem;
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-lg);
    max-width: 400px;
    width: 90%;
}

.login-logo {
    margin-bottom: 1.5rem;
}

.login-logo .logo-icon {
    font-size: 4rem;
    display: block;
    margin-bottom: 1rem;
}

.login-logo h1 {
    font-size: 2rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.login-subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1rem;
}

.btn-google {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: #fff;
    color: #333;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.btn-google:hover {
    background: #f5f5f5;
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

.login-note {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* User Menu (top-left) */
.user-menu {
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1000;
}

.user-avatar-btn {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 2px solid var(--border-glass);
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    cursor: pointer;
    padding: 0;
    overflow: hidden;
    transition: var(--transition);
}

.user-avatar-btn:hover {
    border-color: var(--primary);
    transform: scale(1.05);
}

.user-avatar {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.user-avatar-lg {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    border: 3px solid var(--border-glass);
}

/* Settings Container */
.settings-container {
    width: 100%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    padding: 2rem;
    background: var(--bg-glass);
    backdrop-filter: var(--blur);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-glass);
    box-shadow: var(--shadow-lg);
    margin: 1rem;
}

.settings-header {
    text-align: center;
    margin-bottom: 2rem;
    position: relative;
}

.settings-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 1.5rem 0;
}

.settings-header #closeSettingsBtn {
    position: absolute;
    top: 0;
    right: 0;
    font-size: 1.25rem;
}

.current-user {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.user-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.user-name {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.user-email {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.user-role-badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.user-role-badge.admin {
    background: var(--primary);
    color: white;
}

.user-role-badge.standard {
    background: var(--secondary);
    color: white;
}

/* Admin Section */
.admin-section {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.admin-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0 0 1rem 0;
}

.invite-form {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
}

.invite-form .input {
    flex: 1;
    min-width: 150px;
}

.invite-form select.input {
    flex: 0 0 auto;
    width: auto;
}

/* Users List */
.users-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.user-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1rem;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    border: 1px solid var(--border-color);
}

.user-item-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    color: white;
    font-weight: 600;
}

.user-item-info {
    flex: 1;
}

.user-item-email {
    font-size: 0.875rem;
    color: var(--text-primary);
}

.user-item-role {
    font-size: 0.75rem;
    color: var(--text-secondary);
}

.user-item-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-kick {
    padding: 0.375rem 0.75rem;
    font-size: 0.75rem;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn-kick:hover {
    opacity: 0.8;
}

.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover {
    background: #ff5c52;
}

/* Default avatar placeholder */
.default-avatar {
    background: linear-gradient(135deg, var(--primary), var(--info));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}