/* css/style.css - Versión Premium */
:root {
    --primary: #8B7355;
    --primary-dark: #6B5A45;
    --primary-light: #A89276;
    --secondary: #F8F5F0;
    --accent: #D4B896;
    --accent-dark: #C4A886;
    --text: #2C2C2C;
    --text-light: #666666;
    --text-lighter: #999999;
    --white: #FFFFFF;
    --gray-light: #F5F5F5;
    --border: #EAEAEA;
    --shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.12);
    --radius: 16px;
    --radius-sm: 8px;
    --transition: all 0.4s cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --gradient: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    line-height: 1.7;
    color: var(--text);
    background-color: var(--white);
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 {
    font-size: 3.5rem;
    font-weight: 700;
}

h2 {
    font-size: 2.5rem;
}

h3 {
    font-size: 1.75rem;
}

p {
    margin-bottom: 1rem;
    color: var(--text-light);
}

/* Header Premium */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 0;
}

.logo {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo::before {
    content: '✂️';
    font-size: 1.5rem;
}

.nav-links {
    display: none;
    align-items: center;
    gap: 2rem;
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 0;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: var(--transition);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

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

/* Hero Section Premium */
.hero {
    background: var(--gradient);
    color: var(--white);
    padding: 160px 0 100px;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 1000 1000" opacity="0.1"><polygon points="1000,1000 0,1000 0,0 500,500" fill="white"/></svg>');
    background-size: cover;
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

.hero p {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    font-weight: 400;
}

/* Buttons Premium */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 16px 36px;
    background: var(--white);
    color: var(--primary);
    text-decoration: none;
    border-radius: var(--radius);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.4), transparent);
    transition: left 0.7s ease;
}

.btn:hover::before {
    left: 100%;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

.btn-secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
    background: var(--white);
    color: var(--primary);
    border-color: var(--white);
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-sm {
    padding: 12px 24px;
    font-size: 0.9rem;
}

/* Cards Premium */
.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 2.5rem;
    box-shadow: var(--shadow);
    margin-bottom: 2rem;
    transition: var(--transition);
    border: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient);
    opacity: 0;
    transition: var(--transition);
}

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

.card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.card-flat {
    box-shadow: none;
    border: 1px solid var(--border);
}

.card-flat:hover {
    transform: none;
    box-shadow: var(--shadow);
}

/* Forms Premium */
.form-group {
    margin-bottom: 2rem;
    position: relative;
}

.form-label {
    display: block;
    margin-bottom: 0.75rem;
    font-weight: 600;
    color: var(--text);
    font-size: 0.95rem;
}

.form-control {
    width: 100%;
    padding: 16px 20px;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
    background: var(--white);
    font-family: inherit;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(139, 115, 85, 0.1);
}

.select-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%23666' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 18px;
    padding-right: 50px;
}

/* Grid System */
.grid {
    display: grid;
    gap: 2.5rem;
}

.grid-2 {
    grid-template-columns: 1fr;
}

.grid-3 {
    grid-template-columns: 1fr;
}

.grid-4 {
    grid-template-columns: 1fr;
}

/* Services & Stylists Premium */
.service-card, .stylist-card {
    text-align: center;
    padding: 2rem 1.5rem;
    position: relative;
}

.service-icon, .stylist-photo {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-dark) 100%);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.service-card:hover .service-icon,
.stylist-card:hover .stylist-photo {
    transform: scale(1.1) rotate(5deg);
}

.stylist-photo {
    background: var(--gray-light);
}

.stylist-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.stylist-card:hover .stylist-photo img {
    transform: scale(1.1);
}

.price {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0.5rem 0;
}

.duration {
    color: var(--text-lighter);
    font-size: 0.9rem;
}

.specialty {
    color: var(--primary);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 0.5rem;
}

/* Booking Steps Premium */
.booking-steps {
    display: flex;
    justify-content: space-between;
    margin: 3rem 0;
    position: relative;
    counter-reset: step;
}

.booking-steps::before {
    content: '';
    position: absolute;
    top: 30px;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(to right, var(--primary) 0%, var(--border) 0%);
    background-size: 0% 100%;
    background-repeat: no-repeat;
    transition: background-size 0.8s ease;
}

.booking-steps[data-step="1"]::before { background-size: 25% 100%; }
.booking-steps[data-step="2"]::before { background-size: 50% 100%; }
.booking-steps[data-step="3"]::before { background-size: 75% 100%; }
.booking-steps[data-step="4"]::before { background-size: 100% 100%; }

.step {
    text-align: center;
    position: relative;
    z-index: 2;
    flex: 1;
}

.step-number {
    width: 60px;
    height: 60px;
    background: var(--white);
    border: 3px solid var(--border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-weight: 700;
    font-size: 1.1rem;
    transition: var(--transition);
    position: relative;
}

.step.active .step-number {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
    transform: scale(1.1);
}

.step.completed .step-number {
    background: var(--primary);
    border-color: var(--primary);
    color: var(--white);
}

.step.completed .step-number::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

/* Payment Options Premium */
.payment-options {
    display: grid;
    gap: 1rem;
    margin: 2rem 0;
}

.payment-option {
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    background: var(--white);
}

.payment-option:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.payment-option.selected {
    border-color: var(--primary);
    background: rgba(139, 115, 85, 0.03);
    box-shadow: 0 4px 12px rgba(139, 115, 85, 0.1);
}

.payment-icon {
    margin-right: 1.25rem;
    font-size: 2rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--gray-light);
    border-radius: 12px;
}

/* Time Slots Premium */
.time-slots {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.75rem;
    margin: 1.5rem 0;
}

.time-slot {
    padding: 1rem 0.5rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    background: var(--white);
}

.time-slot:hover {
    border-color: var(--primary-light);
    transform: translateY(-2px);
}

.time-slot.selected {
    background: var(--primary);
    color: var(--white);
    border-color: var(--primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(139, 115, 85, 0.3);
}

.time-slot.unavailable {
    background: var(--gray-light);
    color: var(--text-lighter);
    cursor: not-allowed;
    opacity: 0.5;
}

.time-slot.unavailable:hover {
    transform: none;
    border-color: var(--border);
}

/* Calendar Styles */
.calendar {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.calendar-header {
    background: var(--gradient);
    color: var(--white);
    padding: 1.5rem;
    text-align: center;
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 1px;
    background: var(--border);
}

.calendar-day {
    background: var(--white);
    padding: 1rem 0.5rem;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
}

.calendar-day:hover {
    background: var(--gray-light);
}

.calendar-day.selected {
    background: var(--primary);
    color: var(--white);
}

.calendar-day.other-month {
    color: var(--text-lighter);
    background: var(--gray-light);
}

.calendar-day.has-appointments::after {
    content: '';
    position: absolute;
    bottom: 4px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 4px;
    background: var(--primary);
    border-radius: 50%;
}

/* Login Styles */
.login-container {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--secondary) 0%, var(--white) 100%);
    padding: 2rem;
}

.login-card {
    background: var(--white);
    border-radius: var(--radius);
    box-shadow: var(--shadow-hover);
    padding: 3rem;
    width: 100%;
    max-width: 440px;
    position: relative;
}

.login-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
    border-radius: var(--radius) var(--radius) 0 0;
}

/* Admin Styles */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

.admin-sidebar {
    background: var(--text);
    color: var(--white);
    width: 280px;
    padding: 2rem 0;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.admin-brand {
    padding: 0 2rem 2rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 2rem;
}

.admin-nav {
    padding: 0 1rem;
}

.admin-nav a {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    padding: 1rem 1.5rem;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    margin-bottom: 0.5rem;
}

.admin-nav a:hover,
.admin-nav a.active {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.admin-nav a i {
    font-size: 1.25rem;
    width: 24px;
    text-align: center;
}

.admin-content {
    flex: 1;
    margin-left: 280px;
    background: var(--secondary);
    min-height: 100vh;
}

.admin-header {
    background: var(--white);
    padding: 1.5rem 2rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: between;
    align-items: center;
}

.admin-main {
    padding: 2rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--gradient);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin: 0.5rem 0;
}

.stat-label {
    color: var(--text-light);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Footer */
.footer {
    background: var(--text);
    color: var(--white);
    padding: 4rem 0 2rem;
    margin-top: 6rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-section h3 {
    color: var(--white);
    margin-bottom: 1.5rem;
}

.footer-section a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: var(--transition);
    display: block;
    margin-bottom: 0.5rem;
}

.footer-section a:hover {
    color: var(--white);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: rgba(255, 255, 255, 0.5);
}

/* Responsive Design */
@media (min-width: 768px) {
    .hero h1 {
        font-size: 4rem;
    }
    
    .grid-2 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-3 {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .grid-4 {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .nav-links {
        display: flex;
    }
    
    .time-slots {
        grid-template-columns: repeat(6, 1fr);
    }
    
    .footer-content {
        grid-template-columns: 2fr 1fr 1fr 1fr;
    }
}

@media (min-width: 1024px) {
    .container {
        padding: 0 40px;
    }
    
    .hero {
        padding: 180px 0 120px;
    }
    
    .hero h1 {
        font-size: 4.5rem;
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}

/* Loading States */
.loading {
    opacity: 0.6;
    pointer-events: none;
    position: relative;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 20px;
    height: 20px;
    border: 2px solid var(--border);
    border-top: 2px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}