@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --brand-500: #3b82f6;
    --brand-600: #2563eb;
    --brand-700: #0b4ea2;
    --brand-800: #1e3a8a;
    --brand-900: #0f172a;
    --accent-blue: #0ea5e9;
    --accent-red: #e31b23;
    --skywash-50: #f8fafc;
    --skywash-100: #f1f5f9;
    --skywash-200: #e2e8f0;
    --glass-bg: rgba(255, 255, 255, 0.8);
    --glass-border: rgba(226, 232, 240, 0.5);
    --neon-shadow: 0 0 20px rgba(124, 58, 237, 0.15);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--skywash-50);
    color: #0f172a;
    line-height: 1.6;
}

/* NAVBAR */
.navbar {
    background: var(--glass-bg);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--skywash-200);
}

.navbar-brand img {
    height: 40px;
}

.nav-link {
    font-size: 0.875rem;
    font-weight: 500;
    color: #4b5563 !important;
    transition: color 0.2s;
}

.nav-link:hover,
.nav-link.active {
    color: var(--brand-700) !important;
}

/* Hide Spinners (Arrows) on numeric inputs */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}
input[type=number] {
    -moz-appearance: textfield;
}

/* HERO SECTION */
.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 80px 0;
    overflow: hidden;
    background-image: url('../assets/hero-bg.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(15, 23, 42, 0.9) 0%, rgba(15, 23, 42, 0.7) 100%);
    z-index: 1;
}

.hero-section .container {
    position: relative;
    z-index: 2;
}

.hero-title {
    color: white !important;
}

.hero-subtitle {
    color: rgba(255, 255, 255, 0.8) !important;
}

.hero-glow {
    position: absolute;
    z-index: -1;
    pointer-events: none;
    opacity: 0.4;
}

.glow-top-left {
    position: absolute;
    top: -100px;
    left: -100px;
    width: 300px;
    height: 300px;
    background: var(--accent-blue);
    filter: blur(100px);
    border-radius: 50%;
}

.glow-bottom-right {
    position: absolute;
    bottom: -100px;
    right: -100px;
    width: 300px;
    height: 300px;
    background: var(--accent-red);
    filter: blur(100px);
    border-radius: 50%;
}

.hero-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.28em;
    color: var(--brand-500);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.1;
    color: var(--brand-900);
    margin-top: 1.5rem;
}

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
}

.hero-subtitle {
    font-size: 1.125rem;
    color: #4b5563;
    margin-top: 1.5rem;
}

/* CARDS & SECTIONS */
.section-card {
    background: linear-gradient(135deg, #ffffff 0%, var(--skywash-100) 50%, var(--skywash-50) 100%);
    border: 1px solid var(--skywash-200);
    border-radius: 2rem;
    padding: 3rem;
    box-shadow: var(--neon-shadow);
}

.feature-card {
    background: white;
    border: 1px solid var(--skywash-200);
    border-radius: 1.25rem;
    padding: 1.5rem;
    transition: transform 0.2s;
    height: 100%;
}

.feature-card:hover {
    transform: translateY(-5px);
}

/* TIMELINE */
.timeline {
    position: relative;
    padding-left: 2rem;
    border-left: 1px solid rgba(109, 40, 217, 0.2);
}

.timeline-item {
    position: relative;
    margin-bottom: 2rem;
    background: white;
    border: 1px solid var(--skywash-200);
    padding: 1.5rem;
    border-radius: 1.25rem;
}

.timeline-dot {
    position: absolute;
    left: -38px;
    top: 24px;
    width: 12px;
    height: 12px;
    background: var(--accent-red);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-red);
    z-index: 1;
}

/* STATS */
.stat-box {
    background: var(--skywash-50);
    border: 1px solid var(--skywash-200);
    border-radius: 1.25rem;
    padding: 2rem;
    text-align: center;
    height: 100%;
}

.stat-number {
    font-size: 2rem;
    font-weight: 800;
    color: var(--brand-900);
}

/* FOOTER */
.site-footer {
    background: linear-gradient(135deg, var(--brand-900) 0%, var(--brand-800) 50%, var(--brand-700) 100%);
    color: white;
    padding: 80px 0;
    position: relative;
    overflow: hidden;
    margin-top: 100px;
}

.footer-link {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color 0.2s;
}

.footer-link:hover {
    color: white;
}

/* BUTTONS */
.btn-brand {
    background: var(--brand-700);
    color: white;
    border-radius: 0.75rem;
    padding: 12px 28px;
    font-weight: 600;
    border: none;
    transition: all 0.2s;
}

.btn-brand:hover {
    background: var(--brand-800);
    color: white;
    transform: scale(1.02);
}

.btn-outline-brand {
    background: transparent;
    border: 1.5px solid var(--brand-700);
    color: var(--brand-700);
    border-radius: 0.75rem;
    padding: 12px 28px;
    font-weight: 600;
    transition: all 0.2s;
}

.btn-outline-brand:hover {
    background: var(--brand-700);
    color: white;
}

/* REGISTRATION FORM */
.registration-container {
    max-width: 900px;
    margin: 40px auto;
}

.registration-card {
    background: white;
    border: 1px solid var(--skywash-200);
    border-radius: 2rem;
    padding: 2.5rem;
    box-shadow: var(--neon-shadow);
}

.registration-header {
    background: var(--brand-800);
    border-radius: 1.25rem;
    padding: 2.5rem;
    color: white;
    margin-bottom: 2.5rem;
}

.form-label {
    font-size: 0.875rem;
    font-weight: 500;
    color: #475569;
    margin-bottom: 0.5rem;
}

.form-control,
.form-select {
    background: var(--skywash-50);
    border: 1px solid transparent;
    border-radius: 0.75rem;
    padding: 14px 18px;
    font-size: 0.875rem;
    color: #1e293b;
    transition: all 0.2s;
}

.form-control:focus,
.form-select:focus {
    background: white;
    border-color: var(--skywash-200);
    box-shadow: 0 0 0 4px rgba(109, 40, 217, 0.1);
    outline: none;
}

/* FAQ */
.faq-details {
    background: white;
    border: 1px solid var(--skywash-200);
    border-radius: 1.25rem;
    padding: 1rem 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.2s;
}

.faq-details[open] {
    border-color: var(--brand-500);
    box-shadow: var(--neon-shadow);
}

.faq-summary {
    font-weight: 600;
    color: var(--brand-900);
    cursor: pointer;
    list-style: none;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-summary::-webkit-details-marker {
    display: none;
}

.faq-answer {
    margin-top: 1rem;
    font-size: 0.9375rem;
    color: #475569;
}