/* 1. FUENTE Y VARIABLES */
@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700&display=swap');

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-soft: #eef2ff;
    --dark: #0f172a;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --bg-body: #f8fafc;
    --radius-lg: 16px;
    --radius-md: 12px;
    --shadow: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.05);
}

/* 2. RESET Y BASE */
* { 
    box-sizing: border-box; 
    margin: 0; 
    padding: 0; 
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Plus Jakarta Sans', sans-serif;
    background-color: var(--bg-body);
    color: var(--text-main);
    line-height: 1.6;
    padding-bottom: 40px;
}

/* 3. NAVEGACIÓN (HEADER) CORREGIDA */
.topbar {
    background: #ffffff;
    padding: 15px 0;
    border-bottom: 1px solid #e2e8f0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    max-width: 1350px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.brand {
    font-weight: 800;
    font-size: 1.3rem;
    color: var(--dark);
    text-decoration: none;
    letter-spacing: -0.5px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 25px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-muted);
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s;
}

.nav-links a:hover {
    color: var(--primary);
}

.btn-login {
    background: var(--primary-soft);
    color: var(--primary) !important;
    padding: 10px 20px;
    border-radius: 10px;
    transition: all 0.3s !important;
}

.btn-login:hover {
    background: var(--primary);
    color: #ffffff !important;
}

/* 4. LAYOUT DE DOS COLUMNAS */
.container {
    max-width: 1350px;
    margin: 40px auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 380px;
    gap: 40px;
    align-items: start;
}

@media (max-width: 900px) {
    .container { 
        grid-template-columns: 1fr; 
        margin: 20px auto;
        gap: 20px;
    }
    .sidebar { 
        order: -1;
    }
    .header-content { padding: 0 15px; }
    .brand { font-size: 1.1rem; }
    .nav-links { gap: 15px; }
}

/* 5. TARJETAS (CARDS) */
.card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 30px;
    margin-bottom: 25px;
    border: 1px solid #e2e8f0;
    box-shadow: var(--shadow);
}

h1 { font-size: 1.8rem; color: var(--dark); margin-bottom: 10px; letter-spacing: -0.02em; }
h2 { font-size: 1.4rem; color: var(--dark); margin-bottom: 15px; }

/* 6. FORMULARIOS */
.grid { 
    display: grid; 
    grid-template-columns: 1fr 1fr; 
    gap: 20px; 
    margin-bottom: 20px; 
}

.booking-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 5px;
}

@media (max-width: 600px) { 
    .grid, .booking-grid { grid-template-columns: 1fr; } 
}

label { 
    display: block; 
    font-weight: 600; 
    font-size: 0.85rem; 
    margin-bottom: 8px; 
    color: var(--dark); 
}

select, input, textarea {
    width: 100%; 
    padding: 12px 15px; 
    border: 1.5px solid #e2e8f0; 
    border-radius: var(--radius-md);
    font-family: inherit; 
    font-size: 1rem;
    transition: all 0.2s; 
    background: #fcfcfc;
}

select:focus, input:focus, textarea:focus { 
    outline: none; 
    border-color: var(--primary); 
    background: #fff; 
    box-shadow: 0 0 0 4px var(--primary-soft); 
}

/* 7. BOTONES DE HORARIOS (SLOTS) */
.slot-list { 
    display: grid; 
    grid-template-columns: repeat(auto-fill, minmax(95px, 1fr)); 
    gap: 12px; 
    margin: 15px 0 25px; 
}

.slot-radio { display: none; }

.slot-label {
    display: block; 
    padding: 12px 5px; 
    text-align: center; 
    border: 1.5px solid #e2e8f0;
    border-radius: 10px; 
    cursor: pointer; 
    font-weight: 700; 
    font-size: 0.95rem; 
    transition: all 0.2s;
    background: white;
}

.slot-label:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-soft);
}

.slot-radio:checked + .slot-label { 
    background: var(--primary); 
    color: #fff; 
    border-color: var(--primary); 
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

/* Estilo para los turnos ocupados */
.slot-disabled {
    background-color: #f1f5f9;
    border-color: #e2e8f0;
    color: #94a3b8;
    cursor: not-allowed;
    box-shadow: none !important;
}
.slot-disabled:hover {
    background-color: #f1f5f9;
    border-color: #e2e8f0;
    color: #94a3b8;
}

/* 8. BOTÓN PRINCIPAL */
button[type="submit"] {
    width: 100%; 
    background: var(--primary); 
    color: white; 
    border: none;
    padding: 16px; 
    border-radius: var(--radius-md); 
    font-weight: 700; 
    font-size: 1.1rem;
    cursor: pointer; 
    transition: 0.3s;
    margin-top: 10px;
}

button[type="submit"]:hover { 
    background: var(--primary-hover); 
    transform: translateY(-2px); 
    box-shadow: 0 8px 15px rgba(79, 70, 229, 0.3);
}

button[type="submit"]:active { transform: scale(0.98); }

/* 9. VISTA DEL PROFESIONAL (SIDEBAR) */
.sidebar { 
    position: sticky; 
    top: 100px; 
}

@media (max-width: 900px) {
    .sidebar { position: static; }
}

.prof-view { text-align: center; }

.prof-photo-big {
    width: 140px; 
    height: 140px; 
    border-radius: 50%; 
    object-fit: cover;
    margin: 0 auto 20px; 
    border: 5px solid var(--primary-soft); 
    background: #f1f5f9;
}

.prof-name { 
    display: block; 
    font-size: 1.3rem; 
    font-weight: 700; 
    color: var(--dark); 
}

.prof-specialty { 
    color: var(--text-muted); 
    font-size: 0.9rem; 
}

/* 10. ALERTAS */
.alert { 
    padding: 16px; 
    border-radius: var(--radius-md); 
    margin-bottom: 25px; 
    font-weight: 600; 
    font-size: 0.95rem;
    width: 100%;
}

.alert-error { 
    background: #fef2f2; 
    color: #991b1b; 
    border: 1px solid #fecaca; 
}

.alert-ok { 
    background: #ecfdf5; 
    color: #065f46; 
    border: 1px solid #a7f3d0; 
}

hr {
    border: 0;
    border-top: 1.5px solid #e2e8f0;
    margin: 25px 0;
}

/* 11. SELECTOR DE DÍAS Y ANIMACIONES */
.day-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 12px;
    margin-top: 15px;
    padding-bottom: 8px;
}

.day-radio { display: none; }

.day-label {
    display: block;
    padding: 12px 5px;
    text-align: center;
    border: 1.5px solid #e2e8f0;
    border-radius: 10px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s;
    background: white;
    white-space: nowrap;
    color: var(--text-muted);
}

.day-label:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-soft);
}

.day-radio:checked + .day-label {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 4px 10px rgba(79, 70, 229, 0.3);
}

.fade-in-section {
    animation: fadeInDown 0.4s ease-out forwards;
    transform-origin: top;
}

@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-10px); max-height: 0; overflow: hidden; }
    to { opacity: 1; transform: translateY(0); max-height: 800px; overflow: visible; }
}