/* ========================================
   ERCAVA SEARCH — Cosmic Dark Theme
   ======================================== */

/* === CSS Custom Properties === */
:root {
    /* Colors */
    --bg-deep: #06060f;
    --bg-surface: #0c0c1d;
    --bg-card: rgba(15, 15, 35, 0.7);
    --bg-card-hover: rgba(20, 20, 50, 0.85);
    --bg-glass: rgba(15, 15, 40, 0.45);

    --accent-primary: #8b5cf6;
    --accent-secondary: #a78bfa;
    --accent-tertiary: #c4b5fd;
    --accent-glow: rgba(139, 92, 246, 0.15);
    --accent-glow-strong: rgba(139, 92, 246, 0.35);

    --text-primary: #f0eeff;
    --text-secondary: #a8a3c7;
    --text-tertiary: #6b6490;
    --text-accent: #c4b5fd;

    --border-subtle: rgba(139, 92, 246, 0.12);
    --border-glow: rgba(139, 92, 246, 0.3);
    --border-card: rgba(139, 92, 246, 0.08);

    --success: #34d399;
    --warning: #fbbf24;
    --danger: #f87171;
    --info: #60a5fa;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    --space-3xl: 64px;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.8125rem;
    --font-size-md: 0.9375rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.75rem;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.1), 0 0 60px rgba(139, 92, 246, 0.05);
    --shadow-card: 0 4px 24px rgba(0, 0, 0, 0.3), 0 0 1px rgba(139, 92, 246, 0.1);
    --shadow-card-hover: 0 8px 40px rgba(0, 0, 0, 0.4), 0 0 20px rgba(139, 92, 246, 0.15);

    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

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

/* === Background Effects === */
#bg-stars {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    overflow: hidden;
}

#bg-stars::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image:
        radial-gradient(1px 1px at 10% 20%, rgba(167, 139, 250, 0.4), transparent),
        radial-gradient(1px 1px at 30% 60%, rgba(196, 181, 253, 0.3), transparent),
        radial-gradient(1.5px 1.5px at 50% 10%, rgba(139, 92, 246, 0.5), transparent),
        radial-gradient(1px 1px at 70% 80%, rgba(167, 139, 250, 0.3), transparent),
        radial-gradient(1px 1px at 90% 30%, rgba(196, 181, 253, 0.4), transparent),
        radial-gradient(1px 1px at 15% 85%, rgba(139, 92, 246, 0.3), transparent),
        radial-gradient(1.5px 1.5px at 85% 55%, rgba(167, 139, 250, 0.35), transparent),
        radial-gradient(1px 1px at 45% 45%, rgba(196, 181, 253, 0.25), transparent),
        radial-gradient(1px 1px at 60% 95%, rgba(139, 92, 246, 0.3), transparent),
        radial-gradient(1px 1px at 25% 35%, rgba(167, 139, 250, 0.3), transparent);
    animation: twinkle 8s ease-in-out infinite alternate;
}

@keyframes twinkle {
    0% { opacity: 0.6; }
    50% { opacity: 1; }
    100% { opacity: 0.7; }
}

#bg-glow {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        radial-gradient(ellipse 600px 400px at 20% 10%, rgba(109, 40, 217, 0.08), transparent),
        radial-gradient(ellipse 500px 500px at 80% 80%, rgba(139, 92, 246, 0.06), transparent),
        radial-gradient(ellipse 800px 300px at 50% 50%, rgba(76, 29, 149, 0.04), transparent);
}

/* === Header === */
#main-header {
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    background: rgba(6, 6, 15, 0.75);
    border-bottom: 1px solid var(--border-subtle);
}

.header-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo-group {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-icon {
    width: 40px;
    height: 40px;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-4px); }
}

.logo-icon svg {
    width: 100%;
    height: 100%;
}

.logo-text h1 {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-tertiary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.logo-subtitle {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.15em;
    font-weight: 500;
}

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-xs) var(--space-md);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--accent-secondary);
    background: var(--accent-glow);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
    letter-spacing: 0.02em;
}

/* === Main Content === */
#main-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

/* === Search Section === */
#search-section {
    padding: var(--space-3xl) 0 var(--space-lg);
}

.search-container {
    position: relative;
}

.search-glow {
    position: absolute;
    inset: -20px;
    background: radial-gradient(ellipse at center, var(--accent-glow-strong), transparent 70%);
    border-radius: var(--radius-xl);
    opacity: 0;
    transition: opacity var(--transition-slow);
    pointer-events: none;
    z-index: -1;
}

.search-container:focus-within .search-glow {
    opacity: 1;
}

.search-box {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: var(--bg-glass);
    backdrop-filter: blur(16px) saturate(1.3);
    -webkit-backdrop-filter: blur(16px) saturate(1.3);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-md) var(--space-lg);
    transition: border-color var(--transition-base), box-shadow var(--transition-base);
}

.search-box:focus-within {
    border-color: var(--border-glow);
    box-shadow: var(--shadow-glow);
}

.search-icon {
    width: 22px;
    height: 22px;
    color: var(--text-tertiary);
    flex-shrink: 0;
    transition: color var(--transition-base);
}

.search-box:focus-within .search-icon {
    color: var(--accent-secondary);
}

#search-input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: var(--font-size-lg);
    font-weight: 400;
    caret-color: var(--accent-primary);
}

#search-input::placeholder {
    color: var(--text-tertiary);
    font-weight: 300;
}

.search-clear {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
    flex-shrink: 0;
}

.search-clear:hover {
    background: rgba(139, 92, 246, 0.2);
    color: var(--text-primary);
}

.search-clear svg {
    width: 14px;
    height: 14px;
}

.search-hint {
    text-align: center;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    margin-top: var(--space-sm);
    transition: opacity var(--transition-base);
}

/* === Filter Tabs === */
#filter-section {
    padding-bottom: var(--space-lg);
}

.tabs-container {
    display: flex;
    gap: var(--space-sm);
    overflow-x: auto;
    padding-bottom: var(--space-xs);
    scrollbar-width: none;
    -ms-overflow-style: none;
}

.tabs-container::-webkit-scrollbar {
    display: none;
}

.tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: var(--space-sm) var(--space-md);
    font-family: var(--font-body);
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--text-tertiary);
    background: transparent;
    border: 1px solid transparent;
    border-radius: var(--radius-full);
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-base);
}

.tab svg {
    width: 16px;
    height: 16px;
}

.tab:hover {
    color: var(--text-secondary);
    background: rgba(139, 92, 246, 0.06);
}

.tab.active {
    color: var(--accent-tertiary);
    background: var(--accent-glow);
    border-color: var(--border-subtle);
}

/* === Results === */
.results-header {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding-bottom: var(--space-md);
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
}

#results-count {
    font-weight: 600;
    color: var(--text-secondary);
}

#results-time {
    font-size: var(--font-size-xs);
    opacity: 0.6;
}

.results-container {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    padding-bottom: var(--space-3xl);
    min-height: 200px;
}

/* === Result Cards === */
.result-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid var(--border-card);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    cursor: pointer;
    transition: all var(--transition-base);
    animation: cardFadeIn 0.3s ease-out both;
}

.result-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    box-shadow: var(--shadow-card-hover);
    transform: translateY(-2px);
}

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.card-header {
    display: flex;
    align-items: flex-start;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
}

.card-avatar {
    width: 44px;
    height: 44px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: var(--font-size-lg);
    color: var(--text-primary);
    flex-shrink: 0;
}

.card-avatar.student {
    background: linear-gradient(135deg, #6d28d9, #8b5cf6);
}

.card-avatar.news {
    background: linear-gradient(135deg, #1d4ed8, #3b82f6);
}

.card-avatar.lostfound {
    background: linear-gradient(135deg, #b45309, #f59e0b);
}

.card-avatar.competition {
    background: linear-gradient(135deg, #047857, #10b981);
}

.card-avatar.teacher {
    background: linear-gradient(135deg, #b91c1c, #ef4444);
}

.card-avatar.quote {
    background: linear-gradient(135deg, #7e22ce, #a855f7);
}

.card-info {
    flex: 1;
    min-width: 0;
}

.card-name {
    font-family: var(--font-heading);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--text-primary);
    line-height: 1.3;
    margin-bottom: 2px;
}

.card-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    line-height: 1.4;
}

.card-category-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 10px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    border-radius: var(--radius-full);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    flex-shrink: 0;
}

.card-category-badge.student {
    color: #c4b5fd;
    background: rgba(139, 92, 246, 0.15);
}

.card-category-badge.news {
    color: #93c5fd;
    background: rgba(59, 130, 246, 0.15);
}

.card-category-badge.lostfound {
    color: #fcd34d;
    background: rgba(245, 158, 11, 0.15);
}

.card-category-badge.competition {
    color: #6ee7b7;
    background: rgba(16, 185, 129, 0.15);
}

.card-category-badge.teacher {
    color: #fca5a5;
    background: rgba(239, 68, 68, 0.15);
}

.card-category-badge.quote {
    color: #d8b4fe;
    background: rgba(168, 85, 247, 0.15);
}

.card-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-sm) var(--space-lg);
    margin-top: var(--space-md);
}

.card-meta-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.card-meta-item svg {
    width: 14px;
    height: 14px;
    opacity: 0.6;
}

.card-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-top: var(--space-sm);
}

.tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 0.6875rem;
    font-weight: 500;
    color: var(--accent-tertiary);
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-full);
}

/* === Empty States === */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--space-3xl) var(--space-lg);
    text-align: center;
}

.empty-icon {
    width: 80px;
    height: 80px;
    margin-bottom: var(--space-lg);
    animation: float 6s ease-in-out infinite;
}

.empty-icon svg {
    width: 100%;
    height: 100%;
}

.empty-title {
    font-family: var(--font-heading);
    font-size: var(--font-size-xl);
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--space-sm);
}

.empty-subtitle {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    max-width: 360px;
    line-height: 1.6;
}

/* === Modal === */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 200;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-lg);
    animation: modalFadeIn 0.25s ease-out;
}

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

.modal-content {
    position: relative;
    background: var(--bg-surface);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    max-width: 560px;
    width: 100%;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: 0 24px 80px rgba(0, 0, 0, 0.5), 0 0 40px rgba(139, 92, 246, 0.1);
    animation: modalSlideUp 0.3s ease-out;
}

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

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(139, 92, 246, 0.1);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    color: var(--text-tertiary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background: rgba(139, 92, 246, 0.2);
    color: var(--text-primary);
}

.modal-close svg {
    width: 16px;
    height: 16px;
}

/* Modal body content */
.modal-section {
    margin-bottom: var(--space-lg);
}

.modal-section:last-child {
    margin-bottom: 0;
}

.modal-section-title {
    font-family: var(--font-heading);
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-sm);
}

.modal-detail-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-sm) 0;
    border-bottom: 1px solid var(--border-subtle);
    font-size: var(--font-size-sm);
}

.modal-detail-row:last-child {
    border-bottom: none;
}

.modal-detail-label {
    color: var(--text-tertiary);
    font-weight: 500;
}

.modal-detail-value {
    color: var(--text-primary);
    text-align: right;
    max-width: 60%;
    word-break: break-word;
}

.modal-header-name {
    font-family: var(--font-heading);
    font-size: var(--font-size-2xl);
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-tertiary), var(--accent-primary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--space-xs);
}

.modal-header-subtitle {
    font-size: var(--font-size-md);
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* === Footer === */
#main-footer {
    position: relative;
    z-index: 1;
    border-top: 1px solid var(--border-subtle);
    background: rgba(6, 6, 15, 0.5);
}

.footer-inner {
    max-width: 900px;
    margin: 0 auto;
    padding: var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
}

.footer-dot {
    opacity: 0.4;
}

/* === Scrollbar Styling === */
::-webkit-scrollbar {
    width: 6px;
}

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

::-webkit-scrollbar-thumb {
    background: rgba(139, 92, 246, 0.2);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(139, 92, 246, 0.4);
}

/* === Responsive === */
@media (max-width: 768px) {
    .header-inner {
        padding: var(--space-sm) var(--space-md);
    }

    #main-content {
        padding: 0 var(--space-md);
    }

    #search-section {
        padding: var(--space-2xl) 0 var(--space-md);
    }

    .search-box {
        padding: var(--space-sm) var(--space-md);
    }

    #search-input {
        font-size: var(--font-size-md);
    }

    .tabs-container {
        gap: 6px;
    }

    .tab {
        padding: 6px var(--space-sm);
        font-size: var(--font-size-xs);
    }

    .tab svg {
        width: 14px;
        height: 14px;
    }

    .result-card {
        padding: var(--space-md);
    }

    .card-avatar {
        width: 36px;
        height: 36px;
        font-size: var(--font-size-md);
    }

    .card-name {
        font-size: var(--font-size-md);
    }

    .modal-content {
        padding: var(--space-lg);
        max-height: 90vh;
    }

    .modal-header-name {
        font-size: var(--font-size-xl);
    }
}

@media (max-width: 480px) {
    .logo-subtitle {
        display: none;
    }

    .header-meta {
        display: none;
    }

    .tab span:not(.tab-icon) {
        /* keep text visible at all sizes */
    }
}

/* === Loading Animation === */
.loading-pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

/* === Highlight matched text === */
.highlight {
    color: var(--accent-secondary);
    font-weight: 600;
    background: rgba(139, 92, 246, 0.12);
    padding: 0 2px;
    border-radius: 2px;
}

/* === Status badges === */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    font-size: 0.6875rem;
    font-weight: 600;
    border-radius: var(--radius-full);
}

.status-badge.found {
    color: var(--success);
    background: rgba(52, 211, 153, 0.1);
}

.status-badge.lost {
    color: var(--warning);
    background: rgba(251, 191, 36, 0.1);
}

.status-badge.searching {
    color: var(--info);
    background: rgba(96, 165, 250, 0.1);
}