:root {
    --ds-bg: #0b1120;
    --ds-bg-soft: #111827;
    --ds-bg-deep: #060b16;
    --ds-surface: rgba(255, 255, 255, 0.03);
    --ds-surface-strong: rgba(255, 255, 255, 0.05);
    --ds-line: rgba(255, 255, 255, 0.08);
    --ds-line-strong: rgba(59, 130, 246, 0.26);
    --ds-primary: #3b82f6;
    --ds-secondary: #8b5cf6;
    --ds-accent: #22d3ee;
    --ds-text: #ffffff;
    --ds-text-soft: #9ca3af;
    --ds-shadow: 0 10px 30px rgba(0, 0, 0, 0.32);
    --ds-shadow-glow: 0 12px 36px rgba(59, 130, 246, 0.18);
    --ds-radius: 16px;
    --ds-radius-lg: 24px;
    --ds-container: min(1200px, calc(100% - 32px));
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: "Manrope", sans-serif;
    background:
        radial-gradient(circle at 20% 20%, rgba(59, 130, 246, 0.12), transparent 32%),
        radial-gradient(circle at 80% 12%, rgba(139, 92, 246, 0.1), transparent 28%),
        radial-gradient(circle at 50% 100%, rgba(34, 211, 238, 0.06), transparent 34%),
        var(--ds-bg);
    color: var(--ds-text);
}

body::before {
    content: "";
    position: fixed;
    inset: 0;
    pointer-events: none;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(180deg, rgba(255,255,255,0.22), transparent 65%);
}

h1,
h2,
h3,
h4,
.display-title,
.brand-text strong,
.hero-inner h1,
.auth-brand-panel h1,
.auth-card h2 {
    font-family: "Space Grotesk", sans-serif;
}

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

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

.container,
.page-shell,
.header-inner,
.flash-stack,
.hero-shell,
.hero-inner,
.section-header,
.feature-grid,
.schedule-list,
.posts-grid,
.faq-list,
.site-footer,
.process-timeline,
.curriculum-grid,
.experience-grid,
.featured-courses-grid,
.results-grid {
    width: var(--ds-container);
    margin-left: auto;
    margin-right: auto;
}

.section {
    padding: 64px 0;
}

.platform-return {
    width: var(--ds-container);
    margin: 22px auto 0;
    position: relative;
    z-index: 3;
}

.platform-return-link {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    min-height: 46px;
    padding: 0 18px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid rgba(255, 255, 255, 0.08);
    color: #dce8ff;
    font-weight: 700;
    backdrop-filter: blur(12px);
    transition: transform 0.3s ease, border-color 0.3s ease, background 0.3s ease;
}

.platform-return-link:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(34, 211, 238, 0.24);
}

.section-kicker,
.eyebrow,
.auth-eyebrow,
.hero-badge,
.auth-badge,
.module-chip,
.message-tag {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 10px 16px;
    border-radius: 999px;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(255, 255, 255, 0.04);
    color: #d9e6ff;
    font-size: 0.82rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    backdrop-filter: blur(12px);
}

.card,
.feature-card,
.schedule-card,
.post-card,
.faq-item,
.auth-card,
.overview-card,
.activity-item,
.course-card,
.stat,
.process-step,
.curriculum-card,
.experience-card,
.featured-course-card,
.metric-card,
.testimonial-card,
.auth-metric,
.preview-panel,
.hero-stat,
.mini-panel,
.community-feed,
.community-message {
    background: var(--ds-surface);
    backdrop-filter: blur(12px);
    border: 1px solid var(--ds-line);
    border-radius: var(--ds-radius);
    box-shadow: var(--ds-shadow);
    transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.card:hover,
.feature-card:hover,
.schedule-card:hover,
.post-card:hover,
.overview-card:hover,
.activity-item:hover,
.course-card:hover,
.process-step:hover,
.curriculum-card:hover,
.experience-card:hover,
.featured-course-card:hover,
.metric-card:hover,
.testimonial-card:hover,
.auth-metric:hover,
.hero-stat:hover,
.mini-panel:hover,
.community-message:hover {
    transform: translateY(-5px);
    border-color: var(--ds-line-strong);
    box-shadow: var(--ds-shadow), var(--ds-shadow-glow);
}

.btn-primary,
.btn-secondary,
.hero-cta,
.edit-btn,
.btn,
.auth-card button,
.google-btn,
.featured-course-link {
    position: relative;
    overflow: hidden;
    isolation: isolate;
    transition: transform 0.3s ease, box-shadow 0.3s ease, background 0.3s ease, border-color 0.3s ease;
}

.btn-primary::before,
.hero-cta::before,
.edit-btn::before,
.btn::before,
.auth-card button::before,
.featured-course-link::before {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(110deg, transparent 20%, rgba(255,255,255,0.28) 45%, transparent 70%);
    transform: translateX(-140%);
    transition: transform 0.7s ease;
    z-index: -1;
}

.btn-primary:hover::before,
.hero-cta:hover::before,
.edit-btn:hover::before,
.btn:hover::before,
.auth-card button:hover::before,
.featured-course-link:hover::before {
    transform: translateX(140%);
}

.btn-primary,
.edit-btn,
.btn,
.auth-card button,
.featured-course-link {
    background: linear-gradient(135deg, var(--ds-primary), var(--ds-secondary));
    color: #ffffff;
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 999px;
    box-shadow: 0 10px 24px rgba(59, 130, 246, 0.22);
}

.btn-primary:hover,
.edit-btn:hover,
.btn:hover,
.auth-card button:hover,
.featured-course-link:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 14px 30px rgba(59, 130, 246, 0.3), 0 0 22px rgba(34, 211, 238, 0.12);
}

.btn-secondary,
.google-btn,
.secondary-btn {
    background: rgba(255, 255, 255, 0.04);
    color: var(--ds-text);
    border: 1px solid var(--ds-line);
    border-radius: 999px;
}

.btn-secondary:hover,
.google-btn:hover,
.secondary-btn:hover {
    background: rgba(255, 255, 255, 0.07);
    border-color: rgba(34, 211, 238, 0.3);
    transform: translateY(-2px) scale(1.03);
}

.input,
input,
textarea,
select {
    background: rgba(255, 255, 255, 0.03);
    color: var(--ds-text);
    border: 1px solid rgba(255, 255, 255, 0.08);
    border-radius: 14px;
    transition: border-color 0.3s ease, box-shadow 0.3s ease, background 0.3s ease;
}

input::placeholder,
textarea::placeholder {
    color: rgba(255, 255, 255, 0.42);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: rgba(59, 130, 246, 0.8);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.12), 0 0 24px rgba(34, 211, 238, 0.08);
}

.site-header {
    backdrop-filter: blur(16px);
    background: rgba(11, 17, 32, 0.78);
    border-bottom: 1px solid rgba(255, 255, 255, 0.06);
}

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

[data-reveal] {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    transition-delay: calc(var(--reveal-delay, 0) * 90ms);
}

[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation: none !important;
        transition: none !important;
        scroll-behavior: auto !important;
    }

    [data-reveal] {
        opacity: 1 !important;
        transform: none !important;
    }
}