/* ==========================================================================
   VARIABLES & DESIGN TOKENS (Antigravity Aesthetic)
   ========================================================================== */
:root {
    --bg-dark: #0a0f18;
    --bg-card: rgba(20, 28, 43, 0.6);
    --text-primary: #e2e8f0;
    --text-secondary: #94a3b8;
    --accent-gold: #d4af37;
    --accent-gold-glow: rgba(212, 175, 55, 0.3);
    --border-subtle: rgba(255, 255, 255, 0.08);

    --transition-fluid: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
    --glass-blur: blur(16px);
    --shadow-float: 0 20px 40px -10px rgba(0, 0, 0, 0.5), 0 0 20px var(--accent-gold-glow);
}

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

body {
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(circle at 15% 50%, rgba(44, 62, 80, 0.4) 0%, transparent 50%),
        radial-gradient(circle at 85% 30%, rgba(212, 175, 55, 0.05) 0%, transparent 50%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
}

/* ==========================================================================
   TYPOGRAPHY & LAYOUT
   ========================================================================== */
header {
    padding: 3rem 2rem 1.5rem;
    text-align: center;
    position: relative;
    z-index: 10;
}

h1 {
    font-size: 2.5rem;
    font-weight: 300;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #fff, var(--text-secondary));
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--accent-gold);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    opacity: 0.8;
}

main {
    flex: 1;
    padding: 0 2rem 4rem;
    max-width: 1400px;
    margin: 0 auto;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* ==========================================================================
   A-Z INDEX NAVIGATOR
   ========================================================================== */
.az-navigator {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 1rem;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-subtle);
    border-radius: 100px;
    position: sticky;
    top: 20px;
    z-index: 100;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    transition: var(--transition-fluid);
}

.az-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1rem;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    cursor: pointer;
    transition: var(--transition-fluid);
    display: grid;
    place-items: center;
    font-weight: 500;
}

.az-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
    transform: translateY(-2px);
}

.az-btn.active {
    color: var(--bg-dark);
    background: var(--accent-gold);
    box-shadow: 0 0 15px var(--accent-gold-glow);
    transform: scale(1.1);
}

.az-btn.all {
    width: auto;
    padding: 0 1rem;
    border-radius: 20px;
    letter-spacing: 1px;
    font-size: 0.85rem;
    text-transform: uppercase;
}

/* ==========================================================================
   CONTROLS (SORTING)
   ========================================================================== */
.controls-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 1rem;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 1rem;
}

.results-info {
    color: var(--text-secondary);
    font-size: 0.9rem;
    letter-spacing: 1px;
}

.sort-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-subtle);
    color: var(--text-primary);
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition-fast);
    font-size: 0.85rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

.sort-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
}

.sort-icon {
    transition: transform 0.4s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

.sort-btn[data-order="asc"] .sort-icon {
    transform: rotate(180deg);
}

/* ==========================================================================
   DATA GRID & CARDS (Antigravity Effect)
   ========================================================================== */
.data-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
    perspective: 1000px;
    /* For 3D floating effect */
}

.case-card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-subtle);
    border-radius: 16px;
    padding: 1.5rem;
    transition: var(--transition-fluid);
    position: relative;
    overflow: hidden;
    /* Antigravity initial state */
    opacity: 0;
    transform: translateY(30px) translateZ(-50px);
}

/* Animation class added by JS */
.case-card.animate-in {
    opacity: 1;
    transform: translateY(0) translateZ(0);
}

.case-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-gold), transparent);
    opacity: 0;
    transition: var(--transition-fluid);
}

.case-card:hover {
    transform: translateY(-8px) scale(1.02);
    box-shadow: var(--shadow-float);
    border-color: rgba(212, 175, 55, 0.3);
    z-index: 10;
}

.case-card:hover::before {
    opacity: 1;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1rem;
}

.expediente-id {
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--accent-gold);
    font-family: monospace;
    background: rgba(212, 175, 55, 0.1);
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
}

.status-badge {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0.2rem 0.5rem;
    border-radius: 12px;
    border: 1px solid;
}

.status-tramite {
    color: #60a5fa;
    border-color: rgba(96, 165, 250, 0.3);
    background: rgba(96, 165, 250, 0.1);
}

.status-resuelto {
    color: #34d399;
    border-color: rgba(52, 211, 153, 0.3);
    background: rgba(52, 211, 153, 0.1);
}

.status-archivo {
    color: #94a3b8;
    border-color: rgba(148, 163, 184, 0.3);
    background: rgba(148, 163, 184, 0.1);
}

.caratula {
    font-size: 1.1rem;
    font-weight: 500;
    line-height: 1.4;
    margin-bottom: 1rem;
    color: #fff;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-subtle);
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.date-icon {
    margin-right: 0.4rem;
    opacity: 0.6;
}

/* ==========================================================================
   EMPTY STATE
   ========================================================================== */
.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-secondary);
    font-weight: 300;
    letter-spacing: 1px;
    opacity: 0;
    animation: fadeIn 0.5s ease forwards;
}

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

/* ==========================================================================
   MODAL & FORMS (Antigravity)
   ========================================================================== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(10, 15, 24, 0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-fluid);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 20px;
    padding: 2.5rem;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-float);
    transform: translateY(30px) scale(0.95);
    transition: var(--transition-fluid);
}

.modal-overlay.active .modal-content {
    transform: translateY(0) scale(1);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 400;
    color: var(--accent-gold);
    letter-spacing: 1px;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition-fast);
}

.close-btn:hover {
    color: var(--text-primary);
    transform: rotate(90deg);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    letter-spacing: 1px;
}

.form-input {
    width: 100%;
    background: rgba(0, 0, 0, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-primary);
    padding: 0.8rem 1rem;
    border-radius: 8px;
    font-family: 'Inter', sans-serif;
    transition: var(--transition-fast);
}

.form-input option {
    background-color: #ffffff;
    color: #000000;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 10px var(--accent-gold-glow);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--accent-gold), #b89020);
    color: var(--bg-dark);
    border: none;
    padding: 1rem;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    margin-top: 1rem;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 15px var(--accent-gold-glow);
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .az-navigator {
        border-radius: 16px;
        position: relative;
        top: 0;
        margin-bottom: 1rem;
    }

    .controls-bar {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
/* ==========================================================================
   CARD ACTIONS
   ========================================================================== */
.delete-card-btn {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #ef4444;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: grid;
    place-items: center;
    cursor: pointer;
    font-size: 1.1rem;
    line-height: 1;
    transition: var(--transition-fast);
}

.delete-card-btn:hover {
    background: #ef4444;
    color: white;
    transform: scale(1.1);
    box-shadow: 0 0 10px rgba(239, 68, 68, 0.4);
}