@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;700&display=swap');

:root {
    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --border-color: #e2e8f0;
    --primary-color: #166534; /* Verde Bosque Profesional */
    --primary-hover: #14532d;
    --secondary-color: #1e40af; /* Azul Profundo */
    --text-main: #0f172a;
    --text-muted: #64748b;
    --danger-color: #dc2626;
    --success-color: #166534;
    
    --cell-available: rgba(22, 101, 52, 0.05);
    --cell-reserved: rgba(30, 64, 175, 0.08);
    --cell-blocked: #f1f5f9;
    --cell-past: #f8fafc;
    
    --transition-fast: 0.15s ease;
    --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.6;
    min-height: 100vh;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(22, 101, 52, 0.03) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(30, 64, 175, 0.03) 0%, transparent 40%);
}

.app-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.logo-section h1 {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-section p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.week-navigation {
    display: flex;
    align-items: center;
    gap: 1rem;
    background: var(--surface-color);
    padding: 0.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    backdrop-filter: blur(10px);
}

.nav-btn {
    background: transparent;
    border: none;
    color: var(--text-main);
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: var(--transition-fast);
}

.nav-btn:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.1);
}

.nav-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
}

#current-week-display {
    font-weight: 600;
    min-width: 180px;
    text-align: center;
}

/* Calendar Grid Container */
.calendar-wrapper {
    position: relative;
    max-height: 75vh; /* Altura máxima para permitir scroll interno */
    overflow: auto;
    border-radius: 16px;
    border: 1px solid var(--border-color);
    background: var(--surface-color);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.calendar-grid {
    display: grid;
    grid-template-columns: 80px repeat(7, 1fr);
    min-width: 900px; /* Ensures readable size on mobile with scroll */
}

.grid-header {
    background: #f8fafc; /* Fondo sólido para que al hacer scroll no se transparente */
    padding: 0.75rem 0.25rem;
    text-align: center;
    border-bottom: 2px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    font-weight: 700;
    position: sticky;
    top: 0;
    z-index: 10;
}

.grid-header.time-col {
    left: 0;
    z-index: 20; /* Mayor que el resto para quedarse en la esquina */
    background: #f1f5f9;
}

.day-header {
    display: flex;
    flex-direction: column;
}

.day-name {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.day-date {
    font-size: 1.1rem;
}

.time-cell {
    padding: 1rem 0.25rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    border-right: 2px solid var(--border-color);
    color: var(--text-main);
    font-size: 0.8rem;
    font-weight: 700;
    position: sticky;
    left: 0;
    background: #f1f5f9;
    z-index: 5;
}

.slot-cell {
    padding: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
    min-height: 70px;
    transition: var(--transition-fast);
    cursor: pointer;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.slot-cell:hover:not(.past):not(.blocked):not(.reserved) {
    background: var(--cell-available);
    transform: scale(0.98);
}

.slot-cell.available {
    background: transparent;
}

.slot-cell.available::after {
    content: 'Libre';
    font-size: 0.7rem;
    color: var(--primary-color);
    opacity: 0.4;
    text-transform: uppercase;
}

.slot-cell.reserved {
    background: var(--cell-reserved);
    cursor: pointer;
}

.reservation-info {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.res-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--secondary-color);
}

.res-location {
    font-size: 0.7rem;
    color: var(--text-main);
    opacity: 0.8;
}

.slot-cell.blocked {
    background: var(--cell-blocked);
    cursor: not-allowed;
}

.slot-cell.blocked::after {
    content: 'Próximamente';
    font-size: 0.6rem;
    color: var(--text-muted);
    opacity: 0.5;
}

.slot-cell.past {
    background: var(--cell-past);
    cursor: not-allowed;
    opacity: 0.4;
}

/* Modals */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    transition: opacity var(--transition-fast);
}

.modal-overlay.active {
    display: flex;
    opacity: 1;
}

.modal-content {
    background: #ffffff;
    width: 90%;
    max-width: 450px;
    border-radius: 24px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: translateY(20px);
    transition: transform var(--transition-smooth);
}

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

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.modal-header p {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
}

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

input, select {
    width: 100%;
    background: #ffffff;
    border: 1px solid var(--border-color);
    padding: 0.75rem 1rem;
    border-radius: 12px;
    color: var(--text-main);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
}

input:focus, select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(22, 101, 52, 0.1);
}

.btn-primary {
    width: 100%;
    background: var(--primary-color);
    color: #ffffff;
    border: none;
    padding: 1rem;
    border-radius: 12px;
    font-weight: 700;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition-fast);
    margin-top: 1rem;
}

.btn-primary:hover {
    background: var(--primary-hover);
    transform: translateY(-2px);
}

.btn-danger {
    width: 100%;
    background: transparent;
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
    padding: 0.75rem;
    border-radius: 12px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-fast);
    margin-top: 1rem;
}

.btn-danger:hover {
    background: rgba(239, 68, 68, 0.1);
}

.modal-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.5rem;
}

/* Legend */
.legend {
    display: flex;
    gap: 1.5rem;
    margin-top: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    padding-bottom: 2rem;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.dot {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.dot.available { border: 1px solid var(--primary-color); opacity: 0.5; }
.dot.reserved { background: var(--cell-reserved); }
.dot.blocked { background: var(--cell-blocked); }
.dot.past { background: var(--cell-past); }

@media (max-width: 768px) {
    .app-container {
        padding: 0.5rem;
    }
    header {
        margin-bottom: 1rem;
        flex-direction: column;
        gap: 0.5rem;
    }
    .logo-section h1 { font-size: 1.5rem; }
    
    .calendar-grid {
        grid-template-columns: 50px repeat(7, 100px);
    }
    
    .slot-cell {
        min-height: 60px;
        padding: 0.25rem;
    }
    
    .res-name { font-size: 0.7rem; }
    .res-location { font-size: 0.6rem; }
}