/* Variables de colores UrbanGo - Tema profesional */
:root {
    --primary-blue: #1e40af;
    --primary-blue-light: #3b82f6;
    --primary-blue-dark: #1e3a8a;
    --secondary-gray: #9ca3af;
    --secondary-gray-light: #f8fafc;
    --secondary-gray-dark: #4b5563;
    --accent-silver: #e5e7eb;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --white: #ffffff;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

/* Reset y estilos base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, sans-serif;
    line-height: 1.6;
    color: var(--secondary-gray-dark);
    background: linear-gradient(135deg, var(--secondary-gray-light) 0%, var(--accent-silver) 100%);
    min-height: 100vh;
}

/* Contenedor principal con ancho limitado */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header mejorado */
.header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.logo-img {
    height: 55px; /* Aumentado para mejor visibilidad */
    width: auto;
    transition: transform 0.3s ease;
}

.logo:hover .logo-img {
    transform: scale(1.05);
}

.logo-text {
    color: var(--primary-blue);
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.logo-subtitle {
    color: var(--secondary-gray);
    font-size: 0.875rem;
    font-weight: 500;
}

/* Navegación desktop */
.nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Botones mejorados */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 0.75rem 1.5rem;
    background: var(--primary-blue);
    color: var(--white);
    text-decoration: none;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
}

.btn:hover {
    background: var(--primary-blue-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-blue);
    border: 2px solid var(--primary-blue);
}

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1rem;
}

.btn-block {
    display: block;
    width: 100%;
    text-align: center;
    justify-content: center;
}

/* Hero section mejorada */
.hero {
    padding: 6rem 0;
    text-align: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
    color: var(--white);
    margin-bottom: 4rem;
    border-radius: 0 0 20px 20px;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
}

.hero h2 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

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

.hero-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

/* Features section */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    padding: 4rem 0;
}

.feature-card {
    background: var(--white);
    padding: 2.5rem 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow);
    transition: all 0.3s ease;
    border: 1px solid var(--accent-silver);
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.feature-card h3 {
    color: var(--primary-blue);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    font-weight: 700;
}

.feature-card p {
    color: var(--secondary-gray-dark);
    line-height: 1.6;
}

/* Página de autenticación mejorada */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 50%, var(--secondary-gray-light) 100%);
    padding: 2rem;
}

.auth-container {
    background: var(--white);
    padding: 3rem;
    border-radius: 16px;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 440px;
    position: relative;
    overflow: hidden;
}

.auth-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-blue), var(--primary-blue-light));
}

.auth-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.auth-logo {
    height: 80px; /* Aumentado para mejor visibilidad */
    width: auto;
    margin-bottom: 1rem;
}

.auth-header h1 {
    color: var(--primary-blue-dark);
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    color: var(--secondary-gray);
    font-size: 1rem;
}

/* Formularios mejorados */
.auth-form {
    space-y: 1.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--secondary-gray-dark);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--accent-silver);
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: var(--white);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-blue);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-control:hover {
    border-color: var(--secondary-gray);
}

.auth-footer {
    text-align: center;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--accent-silver);
}

.auth-footer a {
    color: var(--primary-blue);
    text-decoration: none;
    font-weight: 600;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* Alertas mejoradas */
.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    font-weight: 500;
    border-left: 4px solid transparent;
}

.alert-error {
    background: #fef2f2;
    color: var(--error);
    border-left-color: var(--error);
}

.alert-success {
    background: #f0fdf4;
    color: var(--success);
    border-left-color: var(--success);
}

/* Dashboard Admin mejorado */
.dashboard-container {
    display: flex;
    min-height: 100vh;
    background: var(--secondary-gray-light);
}

.sidebar {
    width: 280px;
    background: var(--white);
    box-shadow: var(--shadow);
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-header {
    padding: 2rem 1.5rem;
    border-bottom: 1px solid var(--accent-silver);
    text-align: center;
}

.sidebar-logo {
    height: 60px; /* Aumentado para mejor visibilidad */
    margin-bottom: 1rem;
}

.sidebar-title {
    color: var(--primary-blue);
    font-size: 1.25rem;
    font-weight: 700;
}

.sidebar-nav {
    padding: 1.5rem 0;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 1rem 1.5rem;
    color: var(--secondary-gray-dark);
    text-decoration: none;
    transition: all 0.3s ease;
    border-left: 3px solid transparent;
}

.nav-item:hover {
    background: var(--secondary-gray-light);
    color: var(--primary-blue);
    border-left-color: var(--primary-blue);
}

.nav-item.active {
    background: var(--primary-blue);
    color: var(--white);
    border-left-color: var(--primary-blue-dark);
}

.nav-icon {
    width: 20px;
    text-align: center;
}

.dashboard-container {
    max-width: 1600px;
    margin: 0 auto;
}


.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2.5rem;
    padding-bottom: 1.5rem;
    border-bottom: 1px solid var(--accent-silver);
}

.dashboard-title {
    color: var(--primary-blue-dark);
    font-size: 2rem;
    font-weight: 700;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--secondary-gray-dark);
}

/* Stats grid mejorado */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid var(--accent-silver);
    position: relative;
    overflow: hidden;
}

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

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

.stat-number {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--primary-blue);
    margin: 1rem 0;
    line-height: 1;
}

.stat-label {
    color: var(--secondary-gray);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Scan page mejorada */
.scan-container {
    max-width: 1000px;
    margin: 0 auto;
}

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

.scan-area {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 3rem;
}

#reader {
    width: 100%;
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--accent-silver);
}

.scan-instructions {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--accent-silver);
}

.scan-instructions h3 {
    color: var(--primary-blue);
    margin-bottom: 1rem;
    font-size: 1.25rem;
}

.scan-instructions p {
    margin-bottom: 0.75rem;
    padding-left: 1rem;
    position: relative;
}

.scan-instructions p::before {
    content: '•';
    color: var(--primary-blue);
    position: absolute;
    left: 0;
}

.scan-results {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    border: 1px solid var(--accent-silver);
}

/* Menú hamburguesa */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--primary-blue);
    cursor: pointer;
    padding: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 15px;
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 300px;
        height: 100vh;
        background: var(--white);
        box-shadow: var(--shadow-lg);
        flex-direction: column;
        padding: 2rem;
        transition: right 0.3s ease;
        z-index: 1000;
    }
    
    .nav.mobile-open {
        right: 0;
    }
    
    .nav-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
    }
    
    .nav-overlay.active {
        display: block;
    }
    
    .hero h2 {
        font-size: 2.5rem;
    }
    
    .dashboard-main {
        margin-left: 0;
    }
    
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .scan-area {
        grid-template-columns: 1fr;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }
    
    .auth-container {
        padding: 2rem;
    }
    
    .logo-img {
        height: 45px; /* Ajustado para móvil */
    }
    
    .auth-logo {
        height: 70px; /* Ajustado para móvil */
    }
}

@media (max-width: 480px) {
    .hero h2 {
        font-size: 2rem;
    }
    
    .hero p {
        font-size: 1rem;
    }
    
    .feature-card {
        padding: 1.5rem 1rem;
    }
    
    .auth-container {
        padding: 1.5rem;
    }
    
    .logo-img {
        height: 40px;
    }
    
    .auth-logo {
        height: 60px;
    }
}