/* ========================================
   TEACHERA - Custom Styles
   ======================================== */

/* Color Variables */
:root {
    --primary-color: #6B3FA0;
    --primary-dark:  #4A2070;
    --primary-light: #8B5CC0;
    --secondary-color: #A8C820;
    --secondary-dark: #7A9A10;
    --accent-color: #A8C820;
    --dark-color: #212529;
    --light-gray: #f8f9fa;
}

/* Bootstrap override — btn-primary usa i nostri colori brand */
.btn-primary, .btn-primary:focus {
    background-color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
    color: #fff !important;
}
.btn-primary:hover, .btn-primary:active {
    background-color: var(--primary-dark) !important;
    border-color: var(--primary-dark) !important;
}
.btn-success, .btn-success:focus {
    background-color: var(--secondary-color) !important;
    border-color: var(--secondary-color) !important;
    color: #212529 !important;
}
.btn-success:hover, .btn-success:active {
    background-color: var(--secondary-dark) !important;
    border-color: var(--secondary-dark) !important;
}
.btn-outline-primary {
    color: var(--primary-color) !important;
    border-color: var(--primary-color) !important;
}
.btn-outline-primary:hover {
    background-color: var(--primary-color) !important;
    color: #fff !important;
}
.text-primary { color: var(--primary-color) !important; }
.text-success { color: var(--secondary-color) !important; }
.bg-primary    { background-color: var(--primary-color) !important; }
.bg-success    { background-color: var(--secondary-color) !important; }
.border-primary { border-color: var(--primary-color) !important; }
a { color: var(--primary-color); }
a:hover { color: var(--primary-dark); }

/* Base Styles */
html {
    font-size: 14px;
    scroll-behavior: smooth;
}

@media (min-width: 768px) {
    html {
        font-size: 16px;
    }
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    line-height: 1.7;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.3;
    margin-bottom: 1rem;
}

.display-3 {
    font-weight: 800;
}

/* Navbar Styles */
.navbar {
    padding: 1rem 0;
    transition: all 0.3s ease;
}

.navbar-brand {
    font-size: 1.8rem !important;
    font-weight: 700;
    color: var(--primary-color) !important;
    transition: transform 0.3s ease;
}

.navbar-brand:hover {
    transform: scale(1.05);
}

.nav-link {
    font-weight: 500;
    color: var(--dark-color) !important;
    transition: color 0.3s ease;
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color) !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: var(--secondary-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after {
    width: 80%;
}

/* Theme Toggle Button */
#themeToggle {
    background: transparent;
    border: none;
    color: var(--dark-color);
    font-size: 1.2rem;
    cursor: pointer;
    transition: color 0.3s ease;
    padding: 0.5rem;
}

#themeToggle:hover {
    color: var(--primary-color);
}

#themeToggle:focus {
    outline: none;
    box-shadow: none;
}

/* Remove underline effect from theme toggle button */
#themeToggle::after {
    display: none !important;
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 100px 0 80px;
    position: relative;
    overflow: hidden;
    border-bottom: 5px solid var(--secondary-color);
}

.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 1440 320"><path fill="rgba(255,255,255,0.1)" d="M0,96L48,112C96,128,192,160,288,160C384,160,480,128,576,112C672,96,768,96,864,112C960,128,1056,160,1152,165.3C1248,171,1344,149,1392,138.7L1440,128L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z"></path></svg>') no-repeat bottom;
    background-size: cover;
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-section h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    animation: fadeInUp 1s ease;
}

.hero-section p {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

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

/* Buttons */
.btn {
    padding: 0.75rem 2rem;
    font-weight: 600;
    border-radius: 50px;
    transition: all 0.3s ease;
    border: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%) !important;
    box-shadow: 0 4px 15px rgba(107, 63, 160, 0.3);
    transition: box-shadow 0.3s ease;
}

.btn-primary:hover {
    box-shadow: 0 6px 20px rgba(107, 63, 160, 0.5);
}

.btn-light {
    background: white;
    color: var(--primary-color);
    transition: background 0.3s ease;
}

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

.btn-lg {
    padding: 1rem 2.5rem;
    font-size: 1.1rem;
}

/* Cards */
.card {
    border: none;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
    transition: box-shadow 0.3s ease;
    overflow: hidden;
    height: 100%;
}

.card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.12);
}

.card-icon {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    margin: 0 auto 1.5rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
}

.card-title {
    color: var(--dark-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.card-body {
    padding: 2rem;
}

/* Section Styles */
.section {
    padding: 80px 0;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark-color);
    position: relative;
    padding-bottom: 0.75rem;
}

/* Lime green underline accent on section titles */
.section-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 2px;
}

.section-subtitle {
    text-align: center;
    font-size: 1.2rem;
    color: #6c757d;
    margin-bottom: 4rem;
}

/* Feature Boxes */
.feature-box {
    padding: 2rem;
    background: white;
    border-radius: 15px;
    text-align: center;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.feature-box:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
}

.feature-icon {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1.5rem;
}

/* Stats Section */
.stats-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: white;
    padding: 60px 0;
}

.stat-item {
    text-align: center;
}

.stat-number {
    font-size: 3rem;
    font-weight: 800;
    display: block;
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1.1rem;
    opacity: 0.9;
}

/* Course Cards */
.course-card {
    position: relative;
    overflow: hidden;
}

.course-badge {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--accent-color);
    color: var(--dark-color);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.9rem;
}

/* Footer */
footer {
    background: var(--dark-color);
    border-top: 4px solid var(--secondary-color);
}

footer a:hover {
    color: var(--primary-color) !important;
    transition: color 0.3s ease;
}

/* Contact Form */
.form-control {
    border-radius: 10px;
    border: 2px solid #e9ecef;
    padding: 0.75rem 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(107, 63, 160, 0.15);
}

.form-floating > .form-control-plaintext::placeholder,
.form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder,
.form-floating > .form-control:focus::placeholder {
    text-align: start;
}

/* Testimonials */
.testimonial-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

.testimonial-text {
    font-style: italic;
    color: #555;
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
}

.testimonial-author {
    font-weight: 600;
    color: var(--dark-color);
}

/* Utility Classes */
.bg-light-blue {
    background-color: #f5f0ff;
}

.text-primary-gradient {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--secondary-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Responsive */
@media (max-width: 768px) {
    .hero-section h1 {
        font-size: 2.5rem;
    }

    .hero-section p {
        font-size: 1.1rem;
    }

    .section {
        padding: 50px 0;
    }

    .section-title {
        font-size: 2rem;
    }
}

/* Animation */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

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