/* File: assets/css/style.css */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --primary-color: #4A90E2;
    --secondary-color: #50E3C2;
    --text-color: #333;
    --bg-color: #F4F7F9;
    --card-bg-color: #FFFFFF;
    --border-color: #E0E0E0;
    --shadow-light: 0 4px 6px rgba(0, 0, 0, 0.05);
    --shadow-medium: 0 10px 15px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', sans-serif;
    margin: 0;
    padding: 0;
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    max-width: 960px;
    margin: 20px auto;
    padding: 20px;
}

header {
    background-color: var(--card-bg-color);
    box-shadow: var(--shadow-light);
    padding: 1rem 0;
    border-bottom: 1px solid var(--border-color);
}

header nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 960px;
    margin: 0 auto;
    padding: 0 20px;
}

header nav .logo {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 700;
    text-decoration: none;
    transition: color 0.3s ease;
}

header nav .logo:hover {
    color: var(--secondary-color);
}

header nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 1.5rem;
}

header nav a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    transition: color 0.3s ease;
}

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

header nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
}

header nav a:hover::after {
    width: 100%;
}

/* Hero Section for Index.php */
.hero-section {
    text-align: center;
    padding: 80px 20px;
    background-color: var(--card-bg-color);
    border-radius: 12px;
    box-shadow: var(--shadow-medium);
    margin-top: 40px;
}

.hero-section h1 {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.hero-section p {
    font-size: 1.2rem;
    color: #666;
    max-width: 600px;
    margin: 0 auto 2rem;
}

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

.btn {
    display: inline-block;
    padding: 12px 24px;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: transform 0.3s ease, background-color 0.3s ease;
}

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

.btn-primary:hover {
    background-color: #3A7CCF;
    transform: translateY(-2px);
}

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

.btn-secondary:hover {
    background-color: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

/* General Layout & Components */
.card {
    background-color: var(--card-bg-color);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow-light);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
}

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

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-sizing: border-box;
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-weight: 500;
}

.alert.error {
    background-color: #FEE2E2;
    color: #991B1B;
    border: 1px solid #FCA5A5;
}

.alert.success {
    background-color: #D1FAE5;
    color: #065F46;
    border: 1px solid #6EE7B7;
}

footer {
    text-align: center;
    padding: 20px;
    color: #666;
}

/* Utility classes for progress bar */
.progress {
    height: 10px;
    background-color: #E0E0E0;
    border-radius: 5px;
    overflow: hidden;
    margin-top: 10px;
    margin-bottom: 10px;
}

.progress-bar {
    height: 100%;
    background-color: var(--primary-color);
    transition: width 0.4s ease;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
    color: #666;
}