/* ====== SKULCBT - MAIN STYLESHEET ====== */
/* Nigeria's #1 Offline-First School Platform */

/* ====== ROOT VARIABLES ====== */
:root {
    --primary-blue: #1a237e;
    --primary-dark: #0d1442;
    --accent-gold: #f9a825;
    --accent-green: #008751;
    --text-dark: #1a1a2e;
    --text-light: #ffffff;
    --bg-light: #f8f9fa;
    --card-bg: #ffffff;
    --shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    --shadow-hover: 0 20px 60px rgba(0, 0, 0, 0.15);
    --radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ====== BASE RESET ====== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    color: var(--text-dark);
    background: var(--bg-light);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ====== TYPOGRAPHY ====== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ====== BUTTONS ====== */
.btn-primary {
    display: inline-block;
    padding: 12px 28px;
    background: var(--accent-gold);
    color: var(--text-dark);
    font-weight: 700;
    font-size: 0.9rem;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    box-shadow: 0 4px 15px rgba(249, 168, 37, 0.3);
}

.btn-primary:hover {
    background: #e6a800;
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(249, 168, 37, 0.4);
}

.btn-primary-large {
    display: inline-block;
    padding: 16px 40px;
    background: var(--accent-gold);
    color: var(--text-dark);
    font-weight: 700;
    font-size: 1.1rem;
    border-radius: 50px;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    box-shadow: 0 4px 20px rgba(249, 168, 37, 0.35);
}

.btn-primary-large:hover {
    background: #e6a800;
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(249, 168, 37, 0.5);
}

.btn-secondary {
    display: inline-block;
    padding: 12px 28px;
    background: transparent;
    color: var(--text-dark);
    font-weight: 600;
    font-size: 0.9rem;
    border-radius: 50px;
    border: 2px solid var(--accent-gold);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-secondary:hover {
    background: var(--accent-gold);
    color: var(--text-dark);
    transform: translateY(-2px);
}

.btn-secondary-large {
    display: inline-block;
    padding: 16px 40px;
    background: transparent;
    color: var(--text-light);
    font-weight: 600;
    font-size: 1.1rem;
    border-radius: 50px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
}

.btn-secondary-large:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-light);
    transform: translateY(-3px);
}

/* ====== HEADER ====== */
.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: 0 2px 20px rgba(0, 0, 0, 0.05);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header.scrolled {
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
}

/* ====== HERO SECTION ====== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    position: relative;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: 0;
}

.hero-bg::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(26, 35, 126, 0.92) 0%, rgba(13, 20, 66, 0.95) 100%);
    z-index: 1;
}

/* ====== FEATURE CARDS ====== */
.feature-card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-hover);
}

.feature-card-image {
    overflow: hidden;
}

/* ====== BLOG CARDS ====== */
.blog-card {
    transition: var(--transition);
}

.blog-card:hover {
    transform: translateY(-6px);
}

/* ====== FEATURE DETAIL SECTIONS ====== */
.feature-detail {
    scroll-margin-top: 100px;
}

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

.fade-in-up {
    animation: fadeInUp 0.6s ease forwards;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.1);
        opacity: 0.7;
    }
}

.animate-pulse {
    animation: pulse 2s ease-in-out infinite;
}

/* ====== RESPONSIVE ====== */

/* Tablets & Small Laptops */
@media (max-width: 1024px) {
    .hero-section {
        min-height: auto;
        padding: 120px 0 80px;
    }
    
    .btn-primary-large {
        padding: 14px 32px;
        font-size: 1rem;
    }
    
    .btn-secondary-large {
        padding: 14px 32px;
        font-size: 1rem;
    }
}

/* Mobile Devices */
@media (max-width: 768px) {
    .hero-section {
        padding: 100px 0 60px;
    }
    
    .btn-primary-large {
        padding: 12px 28px;
        font-size: 0.95rem;
        width: 100%;
    }
    
    .btn-secondary-large {
        padding: 12px 28px;
        font-size: 0.95rem;
        width: 100%;
    }
    
    .btn-primary {
        padding: 10px 20px;
        font-size: 0.85rem;
        width: 100%;
    }
    
    .btn-secondary {
        padding: 10px 20px;
        font-size: 0.85rem;
        width: 100%;
    }
    
    .feature-card {
        margin-bottom: 16px;
    }
    
    .header .container {
        padding: 0 16px;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    .hero-section {
        padding: 90px 0 40px;
    }
    
    .feature-card .p-6 {
        padding: 16px;
    }
}

/* ====== UTILITY HELPERS ====== */
.container {
    max-width: 1280px;
    margin: 0 auto;
}

.text-gradient {
    background: linear-gradient(135deg, var(--accent-gold), #ff6f00);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.shadow-glow {
    box-shadow: 0 0 40px rgba(249, 168, 37, 0.15);
}

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

/* ====== FORM STYLES ====== */
input:focus,
select:focus,
textarea:focus {
    outline: none;
    border-color: var(--accent-gold);
    box-shadow: 0 0 0 3px rgba(249, 168, 37, 0.15);
}

/* ====== SCROLL BAR ====== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-light);
}

::-webkit-scrollbar-thumb {
    background: var(--primary-blue);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-gold);
}

/* ====== PRINT STYLES ====== */
@media print {
    .header,
    #whatsapp-button,
    .btn-primary,
    .btn-secondary {
        display: none !important;
    }
    
    .hero-section {
        min-height: auto !important;
        padding: 40px 0 !important;
    }
}