/* ================================
   🎯 DESIGN SYSTEM (TOKENS)
================================ */
:root {
    /* Colors */
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --secondary: #F59E0B;
    --secondary-dark: #D97706;

    --bg-light: #F8FAFC;
    --bg-white: #FFFFFF;
    --text-dark: #1F2937;
    --text-muted: #6B7280;
    --border: #E5E7EB;

    /* Spacing */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 20px;

    /* Shadows */
    --shadow-sm: 0 4px 12px rgba(0,0,0,0.06);
    --shadow-md: 0 8px 24px rgba(0,0,0,0.08);
    --shadow-lg: 0 20px 40px rgba(0,0,0,0.12);

    /* Transitions */
    --transition: all 0.3s ease;
}

/* ================================
   🧱 BASE
================================ */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Poppins', sans-serif;
    background: var(--bg-light);
    color: var(--text-dark);
    line-height: 1.6;
}

/* Remove unnecessary overrides */
a {
    text-decoration: none;
    transition: var(--transition);
}

/* ================================
   🧭 NAVBAR (PREMIUM)
================================ */
nav {
    background: rgba(255,255,255,0.9);
    backdrop-filter: blur(16px);
    transition: var(--transition);
    border-bottom: 1px solid rgba(0,0,0,0.05);
}

nav.scrolled {
    box-shadow: var(--shadow-md);
    background: rgba(255,255,255,0.98);
}

/* Nav links */
.nav-link {
    position: relative;
    font-weight: 500;
    color: var(--text-dark);
}

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

.nav-link.active {
    color: var(--primary);
}

.nav-link.active::after {
    content: "";
    position: absolute;
    bottom: -4px;
    left: 0;
    height: 2px;
    width: 100%;
    background: var(--primary);
}

/* ================================
   🎯 HERO SECTION
================================ */
.hero {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    position: relative;
}

.hero::before {
    content: "";
    position: absolute;
    inset: 0;
    background: url('https://images.unsplash.com/photo-1555066931-4365d14bab8c') center/cover;
    opacity: 0.12;
}

/* Floating animation (lighter) */
@keyframes float {
    0%,100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
}

.floating-element {
    animation: float 5s ease-in-out infinite;
}

/* ================================
   🎴 CARDS (UNIFIED SYSTEM)
================================ */
.card {
    background: var(--bg-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 1px solid var(--border);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
}

/* Program cards override */
.program-card {
    @apply card;
}

/* ================================
   🔘 BUTTON SYSTEM
================================ */
.btn {
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    border: 2px solid white;
    color: white;
}

.btn-secondary:hover {
    background: rgba(255,255,255,0.1);
}

/* ================================
   📊 COUNTER / STATS
================================ */
.countup {
    font-weight: bold;
    transition: var(--transition);
}

/* ================================
   🧊 GLASS EFFECT (OPTIMIZED)
================================ */
.glass {
    background: rgba(255,255,255,0.08);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
}

/* ================================
   🧠 QUIZ UI (IMPROVED UX)
================================ */
.quiz-container {
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.option-btn {
    background: #2d2d33;
    border-radius: var(--radius-md);
    padding: 14px 18px;
    transition: var(--transition);
    border: 1px solid transparent;
    cursor: pointer;
}

.option-btn:hover {
    border-color: var(--primary);
    background: #383844;
}

.option-btn.selected {
    background: var(--primary);
    color: white;
}

/* ================================
   📩 FORM (CONVERSION OPTIMIZED)
================================ */
input, select {
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    padding: 12px;
    transition: var(--transition);
}

input:focus, select:focus {
    border-color: var(--primary);
    outline: none;
    box-shadow: 0 0 0 3px rgba(79,70,229,0.1);
}

/* ================================
   📦 MODAL
================================ */
#success-modal {
    backdrop-filter: blur(6px);
}

#success-modal .box {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
}

/* ================================
   📱 MOBILE OPTIMIZATION
================================ */
@media (max-width: 768px) {
    .hero {
        padding: 40px 0;
    }

    .option-btn {
        font-size: 14px;
        padding: 10px;
    }
}

/* ================================
   ⚡ PERFORMANCE OPTIMIZATION
================================ */

/* Reduce heavy animations */
@media (prefers-reduced-motion: reduce) {
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Hero Section Gradient */
.hero {
    background: linear-gradient(135deg, #4F46E5 0%, #4338CA 100%) !important;
    position: relative;
}

/* Why Us Section Gradient */
.why-us-bg {
    background: linear-gradient(-45deg, #1e1e4b, #312e81, #4338ca, #4f46e5) !important;
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

/* Glass Cards (The white translucent boxes) */
.glass-card {
    background: rgba(255, 255, 255, 0.1) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Fix for the floating icons animation */
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}
.floating-element { animation: float 6s ease-in-out infinite; }
.delay-0 { animation-delay: 0s; }
.delay-500 { animation-delay: 0.5s; }
.delay-1000 { animation-delay: 1s; }
.delay-1500 { animation-delay: 1.5s; }
.delay-2000 { animation-delay: 2s; }