/* =====================================================
   ESTILOS PRINCIPALES - EDUFACIL V2
   Paleta: Celeste, Blanco, Azul
   ===================================================== */

:root {
    /* Paleta de colores EduFacil - Celeste, Blanco, Azul */
    --primary-color: #1e88e5;      /* Azul principal */
    --secondary-color: #42a5f5;    /* Celeste */
    --accent-color: #64b5f6;       /* Celeste claro */
    --light-blue: #e3f2fd;         /* Celeste muy claro */
    --success-color: #4caf50;      /* Verde moderno */
    --danger-color: #f44336;       /* Rojo moderno */
    --warning-color: #ff9800;      /* Naranja moderno */
    --info-color: #00bcd4;         /* Cyan moderno */
    --light-color: #fafafa;        /* Gris muy claro */
    --dark-color: #263238;         /* Azul oscuro */
    --white-color: #ffffff;        /* Blanco puro */
    --gray-color: #757575;         /* Gris medio */
    --border-radius: 12px;         /* Bordes más redondeados */
    --box-shadow: 0 8px 25px rgba(30, 136, 229, 0.15); /* Sombra azulada */
    --box-shadow-hover: 0 12px 35px rgba(30, 136, 229, 0.25); /* Sombra hover */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); /* Transición suave */
    --gradient-primary: linear-gradient(135deg, #1e88e5 0%, #42a5f5 100%);
    --gradient-secondary: linear-gradient(135deg, #42a5f5 0%, #64b5f6 100%);
    --gradient-light: linear-gradient(135deg, #e3f2fd 0%, #ffffff 100%);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background: var(--gradient-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Navbar */
.navbar {
    background: rgba(255, 255, 255, 0.98) !important;
    backdrop-filter: blur(15px);
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    border-bottom: 1px solid rgba(30, 136, 229, 0.1);
}

.navbar-brand {
    font-weight: 700;
    color: var(--primary-color) !important;
    font-size: 1.5rem;
}

.navbar-nav .nav-link {
    font-weight: 500;
    transition: var(--transition);
    color: var(--dark-color) !important;
    margin: 0 0.5rem;
    border-radius: var(--border-radius);
    padding: 0.5rem 1rem !important;
}

.navbar-nav .nav-link:hover {
    color: var(--primary-color) !important;
    background: var(--light-blue);
    transform: translateY(-2px);
}

/* Hero Section */
.hero-section {
    padding: 140px 0 100px;
    color: var(--white-color);
    text-align: center;
    position: relative;
    overflow: hidden;
    background: var(--gradient-primary);
}

.hero-section::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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-section h1 {
    font-size: 4rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    background: linear-gradient(45deg, #ffffff, #e3f2fd);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-section .lead {
    font-size: 1.4rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    font-weight: 300;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

/* Buttons */
.btn {
    border-radius: var(--border-radius);
    font-weight: 600;
    padding: 0.875rem 2rem;
    transition: var(--transition);
    border: none;
    text-decoration: none;
    display: inline-block;
    cursor: pointer;
    position: relative;
    overflow: hidden;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 0.9rem;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

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

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

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

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

.btn-light:hover {
    background: var(--light-blue);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
    color: var(--primary-color);
}

.btn-outline-light {
    border: 2px solid var(--white-color);
    color: var(--white-color);
    background: transparent;
    backdrop-filter: blur(10px);
}

.btn-outline-light:hover {
    background: var(--white-color);
    color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
}

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

.btn-outline-primary:hover {
    background: var(--primary-color);
    color: var(--white-color);
    transform: translateY(-3px);
    box-shadow: var(--box-shadow-hover);
}

/* Feature Cards */
.feature-card {
    background: var(--white-color);
    border-radius: var(--border-radius);
    padding: 2.5rem 2rem;
    margin: 1rem 0;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    text-align: center;
    height: 100%;
    border: 1px solid rgba(30, 136, 229, 0.1);
    position: relative;
    overflow: hidden;
}

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

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--box-shadow-hover);
    border-color: rgba(30, 136, 229, 0.3);
}

.feature-icon {
    font-size: 3.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 1.5rem;
    display: block;
}

.feature-card h4 {
    color: var(--dark-color);
    margin-bottom: 1rem;
    font-weight: 700;
    font-size: 1.3rem;
}

.feature-card p {
    color: var(--gray-color);
    line-height: 1.7;
    font-size: 1rem;
}

/* Sections */
section {
    padding: 80px 0;
}

section:nth-child(even) {
    background: var(--light-color);
}

/* Footer */
.footer {
    background: var(--gradient-primary);
    color: var(--white-color);
    padding: 4rem 0 2rem;
    margin-top: 0;
    position: relative;
    overflow: hidden;
}

.footer::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 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="50" cy="50" r="1" fill="white" opacity="0.05"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
}

.footer h5 {
    color: var(--white-color);
    margin-bottom: 1rem;
    font-weight: 700;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.footer p {
    opacity: 0.9;
    line-height: 1.7;
}

/* Forms */
.form-container {
    background: var(--white-color);
    border-radius: var(--border-radius);
    padding: 3rem;
    box-shadow: var(--box-shadow);
    max-width: 500px;
    margin: 2rem auto;
    border: 1px solid rgba(30, 136, 229, 0.1);
    position: relative;
    overflow: hidden;
}

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

.form-control {
    border-radius: var(--border-radius);
    border: 2px solid #e9ecef;
    padding: 0.875rem 1.25rem;
    transition: var(--transition);
    font-size: 1rem;
    background: var(--white-color);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(30, 136, 229, 0.25);
    background: var(--light-blue);
    outline: none;
}

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

.form-label {
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

/* Cards */
.card {
    border-radius: var(--border-radius);
    border: none;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.1);
}

.card-header {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    color: var(--white-color);
    border-radius: var(--border-radius) var(--border-radius) 0 0 !important;
    font-weight: 600;
}

/* Tables */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
}

.table thead th {
    background: var(--primary-color);
    color: var(--white-color);
    border: none;
    font-weight: 600;
}

.table tbody tr:hover {
    background: rgba(30, 136, 229, 0.05);
}

/* Alerts */
.alert {
    border-radius: var(--border-radius);
    border: none;
    font-weight: 500;
}

.alert-success {
    background: rgba(76, 175, 80, 0.1);
    color: var(--success-color);
}

.alert-danger {
    background: rgba(244, 67, 54, 0.1);
    color: var(--danger-color);
}

.alert-warning {
    background: rgba(255, 152, 0, 0.1);
    color: var(--warning-color);
}

.alert-info {
    background: rgba(0, 188, 212, 0.1);
    color: var(--info-color);
}

/* Badges */
.badge {
    border-radius: 20px;
    padding: 0.5rem 1rem;
    font-weight: 500;
}

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

.badge-success {
    background: var(--success-color);
}

.badge-danger {
    background: var(--danger-color);
}

.badge-warning {
    background: var(--warning-color);
    color: var(--dark-color);
}

/* Loading Spinner */
.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.8rem;
    }
    
    .hero-section .lead {
        font-size: 1.2rem;
    }
    
    .feature-card {
        margin: 1rem 0;
        padding: 2rem 1.5rem;
    }
    
    .form-container {
        padding: 2rem;
        margin: 1rem;
    }
    
    section {
        padding: 60px 0;
    }
    
    .navbar-nav .nav-link {
        margin: 0.25rem 0;
        padding: 0.75rem 1rem !important;
    }
}

@media (max-width: 576px) {
    .hero-section h1 {
        font-size: 2rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .form-container {
        margin: 1rem;
        padding: 1.5rem;
    }
}

/* Utility Classes */
.text-gradient {
    background: linear-gradient(45deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.bg-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
}

.shadow-custom {
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.rounded-custom {
    border-radius: var(--border-radius);
}

.transition-custom {
    transition: var(--transition);
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in-left {
    animation: slideInLeft 0.5s ease-out;
}

@keyframes slideInLeft {
    from { opacity: 0; transform: translateX(-50px); }
    to { opacity: 1; transform: translateX(0); }
}

.slide-in-right {
    animation: slideInRight 0.5s ease-out;
}

@keyframes slideInRight {
    from { opacity: 0; transform: translateX(50px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Print Styles */
@media print {
    .navbar,
    .footer,
    .btn,
    .no-print {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #ddd !important;
    }
}