/* ═══════════════════════════════════════════
   FIND MY FACE — Material Design 3 (Dark Theme)
   ═══════════════════════════════════════════ */

/* === MD3 Dark Theme Tokens === */
:root {
    /* Color System */
    --md-sys-color-background: #1C1B1F;
    --md-sys-color-on-background: #E6E1E5;
    
    --md-sys-color-surface: #1C1B1F;
    --md-sys-color-on-surface: #E6E1E5;
    --md-sys-color-surface-variant: #49454F;
    --md-sys-color-on-surface-variant: #CAC4D0;
    
    --md-sys-color-primary: #D0BCFF;
    --md-sys-color-on-primary: #381E72;
    --md-sys-color-primary-container: #4F378B;
    --md-sys-color-on-primary-container: #EADDFF;
    
    --md-sys-color-secondary: #CCC2DC;
    --md-sys-color-on-secondary: #332D41;
    --md-sys-color-secondary-container: #4A4458;
    --md-sys-color-on-secondary-container: #E8DEF8;

    --md-sys-color-tertiary: #EFB8C8;
    --md-sys-color-on-tertiary: #492532;
    --md-sys-color-tertiary-container: #633B48;
    --md-sys-color-on-tertiary-container: #FFD8E4;
    
    --md-sys-color-outline: #938F99;
    --md-sys-color-outline-variant: #49454F;

    /* Elevation (Surface + Primary Overlay in MD3 Dark) */
    --md-sys-elevation-level1: rgba(208, 188, 255, 0.05); /* Surface1 */
    --md-sys-elevation-level2: rgba(208, 188, 255, 0.08); /* Surface2 */
    --md-sys-elevation-level3: rgba(208, 188, 255, 0.11); /* Surface3 */
    
    --md-sys-shadow-level1: 0px 1px 2px 0px rgba(0, 0, 0, 0.3), 0px 1px 3px 1px rgba(0, 0, 0, 0.15);
    --md-sys-shadow-level2: 0px 1px 2px 0px rgba(0, 0, 0, 0.3), 0px 2px 6px 2px rgba(0, 0, 0, 0.15);
    --md-sys-shadow-level3: 0px 1px 3px 0px rgba(0, 0, 0, 0.3), 0px 4px 8px 3px rgba(0, 0, 0, 0.15);

    /* Shape */
    --md-sys-shape-corner-small: 8px;
    --md-sys-shape-corner-medium: 12px;
    --md-sys-shape-corner-large: 16px;
    --md-sys-shape-corner-extra-large: 28px;
    --md-sys-shape-corner-full: 9999px;

    /* Typography */
    --md-sys-typescale-font: 'Roboto', sans-serif;
    
    /* Spacing */
    --md-space-xs: 4px;
    --md-space-sm: 8px;
    --md-space-md: 16px;
    --md-space-lg: 24px;
    --md-space-xl: 32px;
    --md-space-xxl: 48px;

    /* Transitions */
    --md-sys-motion-duration-short: 150ms;
    --md-sys-motion-duration-medium: 250ms;
    --md-sys-motion-easing-standard: cubic-bezier(0.2, 0.0, 0, 1.0);
}

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

body.md-dark-theme {
    font-family: var(--md-sys-typescale-font);
    background-color: var(--md-sys-color-background);
    color: var(--md-sys-color-on-background);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* === Typography Classes === */
.md-headline-large {
    font-size: 32px;
    line-height: 40px;
    font-weight: 400;
    letter-spacing: 0px;
}
.md-title-large {
    font-size: 22px;
    line-height: 28px;
    font-weight: 400;
    letter-spacing: 0px;
}
.md-title-medium {
    font-size: 16px;
    line-height: 24px;
    font-weight: 500;
    letter-spacing: 0.15px;
}
.md-body-large {
    font-size: 16px;
    line-height: 24px;
    font-weight: 400;
    letter-spacing: 0.5px;
}
.md-body-medium {
    font-size: 14px;
    line-height: 20px;
    font-weight: 400;
    letter-spacing: 0.25px;
}
.md-label-large {
    font-size: 14px;
    line-height: 20px;
    font-weight: 500;
    letter-spacing: 0.1px;
}
.md-label-medium {
    font-size: 12px;
    line-height: 16px;
    font-weight: 500;
    letter-spacing: 0.5px;
}

/* === Top App Bar === */
.md-top-app-bar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 64px;
    background-color: var(--md-sys-color-surface);
    color: var(--md-sys-color-on-surface);
    display: flex;
    align-items: center;
    z-index: 100;
    /* Elevated surface 2 for sticky header */
    box-shadow: inset 0 0 0 100vmax var(--md-sys-elevation-level2);
}

.md-top-app-bar-inner {
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--md-space-md);
    display: flex;
    align-items: center;
    gap: var(--md-space-lg);
}

.md-top-app-bar-title {
    display: flex;
    align-items: center;
    gap: var(--md-space-sm);
    font-size: 22px;
    font-weight: 400;
    cursor: pointer;
    color: var(--md-sys-color-primary);
}

/* Icons */
.material-symbols-outlined {
    font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
}
.md-icon-large {
    font-size: 28px;
}

.md-breadcrumb {
    display: flex;
    align-items: center;
    gap: var(--md-space-xs);
    font-size: 14px;
    color: var(--md-sys-color-on-surface-variant);
}

.md-breadcrumb-item {
    cursor: pointer;
    padding: 4px 8px;
    border-radius: var(--md-sys-shape-corner-small);
    transition: background-color var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.md-breadcrumb-item:hover {
    background-color: rgba(202, 196, 208, 0.08); /* on-surface-variant hover state layer */
}

.md-breadcrumb-item.active {
    color: var(--md-sys-color-on-surface);
    font-weight: 500;
}

.md-breadcrumb-sep {
    user-select: none;
    font-size: 16px;
}

/* === Main Content === */
.md-main-content {
    padding-top: 88px; /* App bar + spacing */
    padding-bottom: var(--md-space-xxl);
    max-width: 1200px;
    margin: 0 auto;
    padding-left: var(--md-space-md);
    padding-right: var(--md-space-md);
}

/* Steps logic */
.md-step {
    display: none;
    animation: fadeIn var(--md-sys-motion-duration-medium) var(--md-sys-motion-easing-standard);
}
.md-step.active {
    display: block;
}

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

.md-step-header {
    margin-bottom: var(--md-space-xl);
}

.md-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--md-sys-shape-corner-small);
    background-color: var(--md-sys-color-primary-container);
    color: var(--md-sys-color-on-primary-container);
    font-size: 12px;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-bottom: var(--md-space-sm);
    text-transform: uppercase;
}

.md-step-header h1 {
    color: var(--md-sys-color-on-surface);
    margin-bottom: var(--md-space-xs);
}
.md-step-header p {
    color: var(--md-sys-color-on-surface-variant);
}

/* === Grid Layouts === */
.md-grid {
    display: grid;
    gap: var(--md-space-md);
}
.day-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
}
.committee-grid {
    grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
}
.people-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

/* === Cards (Filled Card) === */
.md-card {
    position: relative;
    background-color: var(--md-sys-color-surface);
    box-shadow: inset 0 0 0 100vmax var(--md-sys-elevation-level1);
    border-radius: var(--md-sys-shape-corner-medium);
    padding: var(--md-space-lg);
    cursor: pointer;
    overflow: hidden;
    transition: box-shadow var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

/* State Layer for Card */
.md-card::after {
    content: '';
    position: absolute;
    inset: 0;
    background-color: var(--md-sys-color-on-surface);
    opacity: 0;
    transition: opacity var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
    pointer-events: none;
}

.md-card:hover {
    box-shadow: inset 0 0 0 100vmax var(--md-sys-elevation-level2);
}
.md-card:hover::after {
    opacity: 0.08; /* hover state */
}
.md-card:active::after {
    opacity: 0.12; /* pressed state */
}

.md-card-icon {
    font-size: 40px;
    margin-bottom: var(--md-space-md);
    display: block;
}

.md-card-title {
    color: var(--md-sys-color-on-surface);
    margin-bottom: var(--md-space-xs);
}

.md-card-meta {
    color: var(--md-sys-color-on-surface-variant);
}

/* Outlined Card for People */
.md-card-outlined {
    background-color: var(--md-sys-color-surface);
    border: 1px solid var(--md-sys-color-outline-variant);
    border-radius: var(--md-sys-shape-corner-medium);
    cursor: pointer;
    position: relative;
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.md-card-outlined::after {
    content: '';
    position: absolute;
    inset: 0;
    background-color: var(--md-sys-color-on-surface);
    opacity: 0;
    transition: opacity var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
    pointer-events: none;
}

.md-card-outlined:hover::after { opacity: 0.08; }
.md-card-outlined:active::after { opacity: 0.12; }
.md-card-outlined:hover {
    box-shadow: var(--md-sys-shadow-level1);
}

.person-card-header {
    padding: var(--md-space-md);
    display: flex;
    align-items: center;
    gap: var(--md-space-md);
}

.person-avatar {
    width: 56px;
    height: 56px;
    border-radius: var(--md-sys-shape-corner-full);
    object-fit: cover;
    background-color: var(--md-sys-color-surface-variant);
}

.person-info {
    flex: 1;
}

.person-stats {
    display: flex;
    gap: var(--md-space-md);
    margin-top: 4px;
}

.person-stat {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--md-sys-color-on-surface-variant);
}

.person-stat .material-symbols-outlined {
    font-size: 16px;
}

.person-card-faces {
    padding: 0 var(--md-space-md) var(--md-space-sm);
    display: flex;
    gap: var(--md-space-xs);
    flex-wrap: wrap;
}

.person-face-thumb {
    width: 40px;
    height: 40px;
    border-radius: var(--md-sys-shape-corner-small);
    object-fit: cover;
    z-index: 1; /* above card state layer so click is possible, but JS prevents modal open */
    position: relative;
}
.person-face-thumb:hover {
    box-shadow: var(--md-sys-shadow-level1);
    transform: scale(1.05);
    transition: transform 0.2s ease;
}

.person-card-footer {
    padding: var(--md-space-sm) var(--md-space-md) var(--md-space-md);
    display: flex;
    flex-wrap: wrap;
    gap: var(--md-space-sm);
}

/* === MD3 Assist/Filter Chips === */
.md-chip {
    display: inline-flex;
    align-items: center;
    height: 32px;
    padding: 0 16px;
    border: 1px solid var(--md-sys-color-outline);
    border-radius: var(--md-sys-shape-corner-small);
    color: var(--md-sys-color-on-surface-variant);
    font-size: 14px;
    font-weight: 500;
}
.md-chip-primary {
    background-color: var(--md-sys-color-secondary-container);
    color: var(--md-sys-color-on-secondary-container);
    border: none;
}
.md-chip-tertiary {
    background-color: var(--md-sys-color-tertiary-container);
    color: var(--md-sys-color-on-tertiary-container);
    border: none;
}

/* === Search Bar === */
.md-search-container {
    margin-bottom: var(--md-space-xl);
    max-width: 720px;
}

.md-search-bar {
    display: flex;
    align-items: center;
    height: 56px;
    background-color: var(--md-sys-color-surface);
    box-shadow: inset 0 0 0 100vmax var(--md-sys-elevation-level3);
    border-radius: var(--md-sys-shape-corner-extra-large);
    padding: 0 var(--md-space-md);
    transition: box-shadow var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
}

.md-search-bar:focus-within {
    box-shadow: inset 0 0 0 100vmax var(--md-sys-elevation-level3), 0 0 0 2px var(--md-sys-color-primary);
}

.md-search-icon {
    color: var(--md-sys-color-on-surface-variant);
    margin-right: var(--md-space-sm);
}

.md-search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--md-sys-color-on-surface);
    font-family: var(--md-sys-typescale-font);
    font-size: 16px;
}
.md-search-input::placeholder {
    color: var(--md-sys-color-on-surface-variant);
}

.md-search-count {
    color: var(--md-sys-color-on-surface-variant);
    font-size: 14px;
}

/* === Empty State / Loading === */
.md-empty-state, .md-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--md-space-xxl) 0;
    text-align: center;
}

.md-empty-icon {
    font-size: 48px;
    color: var(--md-sys-color-on-surface-variant);
    margin-bottom: var(--md-space-md);
}

.md-loading .md-circular-progress {
    width: 48px;
    height: 48px;
    border: 4px solid var(--md-sys-color-surface-variant);
    border-top-color: var(--md-sys-color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--md-space-md);
}

@keyframes spin { 100% { transform: rotate(360deg); } }

.hidden { display: none !important; }

/* === Dialog (Modal) === */
.md-dialog-scrim, .md-lightbox-scrim {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.6);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--md-space-md);
    animation: fadeIn var(--md-sys-motion-duration-short) ease;
}

.md-dialog {
    background-color: var(--md-sys-color-surface);
    box-shadow: inset 0 0 0 100vmax var(--md-sys-elevation-level3), var(--md-sys-shadow-level3);
    border-radius: var(--md-sys-shape-corner-extra-large);
    width: 100%;
    max-width: 560px;
    max-height: 85vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.md-dialog-header {
    display: flex;
    justify-content: flex-end;
    padding: var(--md-space-sm) var(--md-space-sm) 0;
}

.md-icon-button {
    background: transparent;
    border: none;
    color: var(--md-sys-color-on-surface-variant);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background-color var(--md-sys-motion-duration-short) ease;
}
.md-icon-button:hover {
    background-color: rgba(202, 196, 208, 0.08); /* on-surface-variant */
}

.md-dialog-content {
    padding: 0 var(--md-space-lg) var(--md-space-lg);
    overflow-y: auto;
}

/* Modal specific elements */
.modal-person-header {
    display: flex;
    align-items: center;
    gap: var(--md-space-lg);
    margin-bottom: var(--md-space-lg);
}

.modal-avatar {
    width: 80px;
    height: 80px;
    border-radius: var(--md-sys-shape-corner-full);
    object-fit: cover;
}

.modal-faces {
    display: flex;
    gap: var(--md-space-sm);
    flex-wrap: wrap;
    margin-top: var(--md-space-sm);
    margin-bottom: var(--md-space-lg);
}

.md-list {
    display: flex;
    flex-direction: column;
}

.md-list-item {
    display: flex;
    align-items: center;
    padding: var(--md-space-sm) 0;
    border-bottom: 1px solid var(--md-sys-color-outline-variant);
}
.md-list-item:last-child {
    border-bottom: none;
}

.md-list-item-text {
    flex: 1;
}

.md-list-item-title {
    color: var(--md-sys-color-on-surface);
}

.md-list-item-supporting {
    display: flex;
    gap: var(--md-space-xs);
    margin-top: 4px;
}

/* === Lightbox === */
.md-lightbox-scrim {
    z-index: 300;
}
.md-lightbox-content {
    position: relative;
    max-width: 90vw;
    max-height: 90vh;
}
.md-lightbox-close {
    position: absolute;
    top: -48px;
    right: 0;
    color: #fff;
}
.md-lightbox-img {
    max-width: 100%;
    max-height: 80vh;
    border-radius: var(--md-sys-shape-corner-medium);
    box-shadow: var(--md-sys-shadow-level3);
}

/* Utility */
.mt-4 { margin-top: var(--md-space-md); }
.mb-2 { margin-bottom: var(--md-space-sm); }