/* --- DISEÑO PREMIUM --- */
:root {
    --dark-bg: #1a1a1a;
    --light-bg: #f9f9f7;
    --text-dark: #2d2d2d;
    --text-light: #e5e5e5;
    --accent: #c0a080; /* Oro cepillado */
    --accent-hover: #ad8f71;
}
body {
    font-family: 'Inter', sans-serif;
    color: var(--text-dark);
    background-color: var(--light-bg);
    font-weight: 300;
}
h1, h2, h3, h4, .font-serif {
    font-family: 'Cormorant Garamond', serif;
    color: var(--text-dark);
    font-weight: 700;
}
.main-container {
    display: flex;
    flex-direction: column;
}
@media (min-width: 1024px) {
    .main-container {
        flex-direction: row;
        height: 100vh;
    }
}
.left-panel {
    background-color: var(--dark-bg);
    /* Textura sutil para el fondo oscuro */
    background-image: linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 20px 20px;
    color: var(--text-light);
    position: relative;
}
.right-panel {
    overflow-y: auto;
    background-color: var(--light-bg);
    scroll-behavior: smooth;
}
.left-panel-content {
    position: sticky;
    top: 0;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}
.left-panel nav a {
    position: relative;
    transition: color 0.3s ease;
    text-decoration: none;
    padding-bottom: 4px;
}
.left-panel nav a::after {
    content: '';
    position: absolute;
    width: 0;
    height: 1px;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    background-color: var(--accent);
    transition: width 0.4s ease;
}
.left-panel nav a:hover {
    color: white;
}
.left-panel nav a:hover::after {
    width: 100%;
}
.btn-primary {
    background-color: var(--accent);
    color: white;
    transition: all 0.3s ease;
    border-radius: 2px;
    font-weight: 500;
    letter-spacing: 0.05em;
}
.btn-primary:hover {
    background-color: var(--accent-hover);
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

/* --- ESTILOS PARA EL CALENDARIO DE CITAS --- */
.calendar {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 0.25rem;
}
.calendar-day {
    text-align: center;
    padding: 0.75rem 0;
    border-radius: 50%;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
}
.calendar-day.disabled {
    color: #ccc;
    cursor: not-allowed;
}
.calendar-day:not(.disabled):not(.header):hover {
    background-color: #f0ebe8;
}
.calendar-day.selected {
    background-color: var(--accent);
    color: white;
}
.time-slot {
    cursor: pointer;
    border: 1px solid #e5e5e5;
    border-radius: 2px;
    padding: 0.75rem;
    transition: all 0.2s ease;
    text-align: center;
}
.time-slot:hover {
    border-color: var(--accent);
    color: var(--accent);
}
.time-slot.selected {
    background-color: var(--accent);
    color: white;
    border-color: var(--accent);
}
.time-slot.disabled {
    background-color: #f9f9f9;
    color: #ccc;
    cursor: not-allowed;
}

/* Animación de entrada para las secciones */
@keyframes fadeInSection {
    from { opacity: 0; transform: translateY(30px); }
    to { opacity: 1; transform: translateY(0); }
}
.section-fade-in {
    animation: fadeInSection 1s ease-out forwards;
    opacity: 0;
}