:root {
    --primary-color: #0f4c75;
    --secondary-color: #3282b8;
    --accent-color: #bbe1fa;
    --text-color: #1b262c;
    --bg-color: #f4f7f6;
    --white: #ffffff;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
    --border-radius: 12px;
}

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

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
    overflow-x: hidden;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--accent-color) 0%, #e3f2fd 100%);
    z-index: -1;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

header {
    background: var(--glass-bg);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.18);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 15px 0;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 5px;
    text-decoration: none;
}

.logo-text {
    display: flex;
    flex-direction: row;
    align-items: baseline;
    gap: 8px;
    line-height: 1.1;
}

.tracer-title {
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--primary-color);
}

.school-name {
    font-size: 1rem;
    font-weight: 600;
    color: var(--secondary-color);
}

@media (max-width: 768px) {
    .logo-text {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    .tracer-title {
        font-size: 1.2rem;
    }
    .school-name {
        font-size: 0.75rem;
    }
}

.btn-admin {
    text-decoration: none;
    color: var(--primary-color);
    font-weight: 600;
    padding: 8px 16px;
    border: 1px solid var(--primary-color);
    border-radius: 20px;
    transition: all 0.3s ease;
}

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

.hero {
    display: flex;
    align-items: center;
    justify-content: center; /* Centered */
    text-align: center;      /* Centered text */
    padding: 100px 20px;
    gap: 50px;
    min-height: 60vh;
}

.hero-content {
    max-width: 800px; /* Limit width for readability */
}

.hero-content h1 {
    font-size: 3.5rem;
    line-height: 1.2;
    margin-bottom: 20px;
    color: var(--primary-color);
    animation: fadeInUp 0.8s ease-out;
}

.hero-content p {
    font-size: 1.2rem;
    margin-bottom: 40px;
    opacity: 0.9;
    animation: fadeInUp 1s ease-out;
}

.hero-cta {
    display: flex;
    justify-content: center; /* Centered buttons */
    gap: 15px;
    animation: fadeInUp 1.2s ease-out;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--white);
    padding: 15px 30px;
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(15, 76, 117, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    padding: 15px 30px;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(15, 76, 117, 0.05);
}

.hero-image {
    flex: 1;
    animation: fadeInRight 1s ease-out;
}

.hero-image img {
    width: 100%;
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    padding-bottom: 80px;
}

.stat-card {
    background: var(--glass-bg);
    padding: 30px;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: transform 0.3s ease;
}

.stat-card:hover {
    transform: translateY(-10px);
}

.stat-card h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 10px;
}

footer {
    padding: 40px 0;
    text-align: center;
    opacity: 0.7;
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

@media (max-width: 768px) {
    .hero {
        flex-direction: column;
        text-align: center;
        padding: 40px 20px;
    }
    .hero-content h1 {
        font-size: 2.5rem;
    }
    .hero-cta {
        justify-content: center;
    }
}

/* About Section */
.about-section {
    padding: 80px 0;
    background: var(--white);
    margin: 40px 0;
    border-radius: 24px;
    box-shadow: var(--shadow);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr; /* Full width */
    gap: 40px;
    align-items: center;
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.about-text h2 {
    font-size: 2.5rem;
    color: var(--primary-color);
    margin-bottom: 20px;
}

.about-text p {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: #444;
}

.about-features {
    list-style: none;
}

.about-features li {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 15px;
    font-weight: 600;
    color: var(--secondary-color);
}

.about-features i {
    background: var(--accent-color);
    padding: 10px;
    border-radius: 50%;
    font-size: 0.9rem;
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .about-features li {
        justify-content: center;
    }
}

/* Responsive Utilities */
.grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

@media (max-width: 600px) {
    .grid-2 {
        grid-template-columns: 1fr;
    }
    
    .form-container {
        padding: 20px !important;
        margin: 20px auto !important;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .btn-submit, .btn-back {
        width: 100%;
    }
    
    .hero-content h1 {
        font-size: 2rem !important;
    }

    /* Dashboard & Header Mobile Fixes */
    nav {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
    
    .nav-links {
        display: flex;
        flex-direction: column;
        gap: 10px;
        align-items: center;
    }

    .tabs {
        overflow-x: auto;
        padding-bottom: 10px;
        display: flex;
        white-space: nowrap;
        -webkit-overflow-scrolling: touch;
    }
    
    .tab-btn {
        flex: 0 0 auto;
    }

    .form-inline {
        flex-direction: column;
        padding: 15px;
    }
    
    .form-inline input, .form-inline select, .form-inline button {
        width: 100%;
    }

    .search-area {
        flex-direction: column;
        gap: 15px;
        align-items: flex-start;
    }
    
    .search-box {
        width: 100%;
    }
    
    .search-box form {
        display: flex;
        width: 100%;
    }
    
    .search-box input {
        flex: 1;
        width: auto;
    }

    .summary-cards {
        grid-template-columns: 1fr 1fr;
    }

    .main-content {
        padding: 15px !important;
    }

    .dashboard-container {
        padding: 20px 0 !important;
    }
}