/* ============================================
   FAP EAD — Faculdade de Apucarana
   Design System & Styles
   ============================================ */

/* ---------- CSS Variables ---------- */
:root {
    --cyan: #00d4ff;
    --cyan-dark: #00a8cc;
    --cyan-glow: rgba(0, 212, 255, 0.3);
    --bg-primary: #0a0a1a;
    --bg-secondary: #0d0d24;
    --bg-card: rgba(13, 13, 36, 0.8);
    --bg-glass: rgba(0, 212, 255, 0.05);
    --border-glass: rgba(0, 212, 255, 0.2);
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.45);
    --gradient-cyan: linear-gradient(135deg, #00d4ff, #00a8cc);
    --gradient-dark: linear-gradient(180deg, #0a0a1a 0%, #0d0d24 100%);
    --gradient-hero: linear-gradient(135deg, rgba(10,10,26,0.85) 0%, rgba(10,10,26,0.4) 50%, rgba(10,10,26,0.7) 100%);
    --shadow-cyan: 0 0 30px rgba(0, 212, 255, 0.15);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;
    --font: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
    --header-h: 72px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ---------- Reset & Base ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: var(--header-h); }
body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; height: auto; display: block; }
button { border: none; background: none; cursor: pointer; font-family: inherit; }
ul, ol { list-style: none; }

.container { width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.text-cyan { color: var(--cyan); }

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex; align-items: center; gap: 8px;
    padding: 12px 28px; border-radius: 50px;
    font-weight: 700; font-size: 0.95rem;
    transition: var(--transition);
    white-space: nowrap; cursor: pointer;
}
.btn--primary {
    background: var(--gradient-cyan); color: var(--bg-primary);
    box-shadow: 0 4px 20px rgba(0, 212, 255, 0.3);
}
.btn--primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 212, 255, 0.5);
}
.btn--outline {
    border: 2px solid var(--cyan); color: var(--cyan);
    background: transparent;
}
.btn--outline:hover {
    background: rgba(0, 212, 255, 0.1);
    transform: translateY(-2px);
}
.btn--lg { padding: 16px 36px; font-size: 1.05rem; }

/* ---------- Header ---------- */
.header {
    position: fixed; top: 0; left: 0; width: 100%; z-index: 1000;
    background: rgba(10, 10, 26, 0.7);
    backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(0, 212, 255, 0.08);
    transition: var(--transition);
}
.header.scrolled {
    background: rgba(10, 10, 26, 0.95);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.3);
}
.header__inner {
    display: flex; align-items: center; justify-content: space-between;
    height: var(--header-h);
}
.header__logo { display: flex; align-items: center; gap: 4px; }
.logo-fap {
    font-size: 1.8rem; font-weight: 900; letter-spacing: -1px;
    color: var(--text-primary);
}
.logo-divider { color: var(--cyan); font-size: 1.6rem; font-weight: 300; margin: 0 4px; }
.logo-ead {
    font-size: 1.4rem; font-weight: 700; font-style: italic;
    color: var(--cyan);
}
.header__nav { display: flex; gap: 8px; }
.nav__link {
    padding: 8px 14px; border-radius: 50px; font-size: 0.85rem;
    font-weight: 600; color: var(--text-secondary);
    transition: var(--transition);
}
.nav__link:hover, .nav__link.active {
    color: var(--cyan); background: rgba(0, 212, 255, 0.08);
}
.header__cta { font-size: 0.85rem; padding: 10px 24px; }
.header__hamburger { display: none; flex-direction: column; gap: 5px; padding: 8px; }
.header__hamburger span {
    width: 24px; height: 2px; background: var(--text-primary);
    border-radius: 2px; transition: var(--transition);
}
.header__hamburger.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.header__hamburger.active span:nth-child(2) { opacity: 0; }
.header__hamburger.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---------- Mobile Overlay ---------- */
.mobile-overlay {
    position: fixed; inset: 0; z-index: 999;
    background: rgba(10, 10, 26, 0.98);
    backdrop-filter: blur(20px);
    display: flex; align-items: center; justify-content: center;
    opacity: 0; pointer-events: none;
    transition: var(--transition);
}
.mobile-overlay.active { opacity: 1; pointer-events: all; }
.mobile-nav { display: flex; flex-direction: column; align-items: center; gap: 20px; }
.mobile-nav__link {
    font-size: 1.4rem; font-weight: 700; color: var(--text-secondary);
    transition: var(--transition);
}
.mobile-nav__link:hover { color: var(--cyan); }
.mobile-nav__cta { margin-top: 16px; }

/* ---------- Hero Slider ---------- */
.hero {
    position: relative; width: 100%; height: 100vh; min-height: 600px;
    overflow: hidden;
}
.hero__slider { position: relative; width: 100%; height: 100%; }
.hero__slide {
    position: absolute; inset: 0;
    opacity: 0; transition: opacity 0.8s ease-in-out;
    pointer-events: none;
}
.hero__slide.active { opacity: 1; pointer-events: all; }
.hero__bg {
    position: absolute; inset: 0;
}
.hero__bg img {
    width: 100%; height: 100%; object-fit: cover;
    object-position: top center;
}
.hero__bg::after {
    content: ''; position: absolute; inset: 0;
    background: var(--gradient-hero);
}
.hero__content {
    position: relative; z-index: 2;
    height: 100%; display: flex; flex-direction: column;
    justify-content: center; padding-top: var(--header-h);
}
.hero__badge {
    display: inline-block; width: fit-content;
    padding: 8px 20px; border-radius: 50px;
    background: rgba(0, 212, 255, 0.12);
    border: 1px solid rgba(0, 212, 255, 0.3);
    font-size: 0.85rem; font-weight: 600;
    color: var(--cyan); margin-bottom: 20px;
    animation: fadeInDown 0.6s ease-out;
}
.hero__title {
    font-size: clamp(2.8rem, 7vw, 5rem);
    font-weight: 900; line-height: 1.05;
    margin-bottom: 12px; letter-spacing: -2px;
    animation: fadeInUp 0.6s ease-out 0.1s both;
}
.hero__subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.5rem);
    font-weight: 500; color: var(--text-secondary);
    margin-bottom: 8px;
    animation: fadeInUp 0.6s ease-out 0.2s both;
}
.hero__desc {
    font-size: 0.95rem; color: var(--text-primary);
    margin-bottom: 32px;
    animation: fadeInUp 0.6s ease-out 0.3s both;
}
.hero__actions {
    display: flex; gap: 16px; flex-wrap: wrap;
    animation: fadeInUp 0.6s ease-out 0.4s both;
}

/* Hero Controls */
.hero__controls {
    position: absolute; bottom: 100px; left: 50%; transform: translateX(-50%);
    z-index: 10; display: flex; align-items: center; gap: 16px;
}
.hero__arrow {
    width: 44px; height: 44px; border-radius: 50%;
    background: rgba(255,255,255,0.1); color: #fff;
    display: flex; align-items: center; justify-content: center;
    backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.15);
    transition: var(--transition);
}
.hero__arrow:hover { background: rgba(0, 212, 255, 0.2); border-color: var(--cyan); }
.hero__dots { display: flex; gap: 8px; }
.hero__dot {
    width: 12px; height: 12px; border-radius: 50%;
    background: rgba(255,255,255,0.25); border: none;
    transition: var(--transition);
}
.hero__dot.active { background: var(--cyan); width: 32px; border-radius: 6px; }
.hero__scroll {
    position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%);
    z-index: 10; display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.hero__scroll span { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 2px; color: var(--text-muted); }
.hero__scroll-line {
    width: 1px; height: 30px; background: var(--cyan); opacity: 0.5;
    animation: scrollPulse 2s ease-in-out infinite;
}

/* ---------- Features ---------- */
.features {
    padding: 100px 0; position: relative;
    background: var(--bg-secondary);
}
.features::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0;
    height: 1px; background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    opacity: 0.3;
}
.section-header { text-align: center; margin-bottom: 64px; }
.section-tag {
    display: inline-block; padding: 6px 18px; border-radius: 50px;
    background: rgba(0, 212, 255, 0.08);
    border: 1px solid rgba(0, 212, 255, 0.2);
    font-size: 0.8rem; font-weight: 700; color: var(--cyan);
    text-transform: uppercase; letter-spacing: 1.5px;
    margin-bottom: 16px;
}
.section-title {
    font-size: clamp(2rem, 4vw, 3rem); font-weight: 900;
    line-height: 1.15; letter-spacing: -1px; margin-bottom: 12px;
}
.section-subtitle {
    font-size: 1.05rem; color: var(--text-secondary); max-width: 550px; margin: 0 auto;
}
.features__grid {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px;
}
.feature-card {
    padding: 36px 28px; border-radius: var(--radius-lg);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    text-align: center;
    transition: var(--transition);
    opacity: 0; transform: translateY(30px);
}
.feature-card.animated { opacity: 1; transform: translateY(0); }
.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--cyan);
    box-shadow: var(--shadow-cyan);
    background: rgba(0, 212, 255, 0.08);
}
.feature-card__icon {
    width: 72px; height: 72px; border-radius: 50%;
    background: rgba(0, 212, 255, 0.1);
    display: flex; align-items: center; justify-content: center;
    margin: 0 auto 20px; color: var(--cyan);
}
.feature-card h3 { font-size: 1.15rem; font-weight: 800; margin-bottom: 8px; }
.feature-card p { font-size: 0.9rem; color: var(--text-secondary); line-height: 1.5; }

/* ---------- Course Sections ---------- */
.course {
    padding: 100px 0; position: relative;
    overflow: hidden;
}
.course:nth-child(odd) { background: var(--bg-primary); }
.course:nth-child(even) { background: var(--bg-secondary); }
.course__layout {
    display: grid; grid-template-columns: 1fr 1fr;
    gap: 60px; align-items: center;
}
.course--reverse .course__layout { direction: rtl; }
.course--reverse .course__layout > * { direction: ltr; }
.course__image {
    position: relative; border-radius: var(--radius-lg);
    overflow: hidden;
    opacity: 0; transform: translateX(-40px);
    transition: 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}
.course--reverse .course__image { transform: translateX(40px); }
.course__image.animated { opacity: 1; transform: translateX(0); }
.course__image img {
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    border: 1px solid var(--border-glass);
    transition: var(--transition);
}
.course__image:hover img { transform: scale(1.03); }
.course__image-badge {
    position: absolute; top: 20px; left: 20px;
    padding: 8px 18px; border-radius: 50px;
    background: var(--gradient-cyan); color: var(--bg-primary);
    font-size: 0.8rem; font-weight: 800;
    text-transform: uppercase; letter-spacing: 1px;
}
.course__info {
    opacity: 0; transform: translateY(30px);
    transition: 0.8s cubic-bezier(0.4, 0, 0.2, 1) 0.2s;
}
.course__info.animated { opacity: 1; transform: translateY(0); }
.course__title {
    font-size: clamp(2.2rem, 4vw, 3.2rem);
    font-weight: 900; line-height: 1.1;
    letter-spacing: -1px; margin-bottom: 8px;
}
.course__tagline {
    font-size: 1.15rem; font-weight: 500;
    color: var(--text-secondary); margin-bottom: 16px;
}
.course__desc {
    font-size: 0.95rem; color: var(--text-secondary);
    line-height: 1.7; margin-bottom: 28px;
}

/* Course Highlights */
.course__highlights { display: flex; flex-direction: column; gap: 16px; margin-bottom: 28px; }
.highlight {
    display: flex; gap: 16px; align-items: flex-start;
    padding: 16px 20px; border-radius: var(--radius-md);
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    transition: var(--transition);
}
.highlight:hover { border-color: var(--cyan); background: rgba(0, 212, 255, 0.06); }
.highlight__icon { font-size: 1.5rem; flex-shrink: 0; margin-top: 2px; }
.highlight strong { display: block; font-size: 0.95rem; font-weight: 800; color: var(--cyan); margin-bottom: 2px; }
.highlight span { font-size: 0.85rem; color: var(--text-secondary); }

/* Course Meta */
.course__meta {
    display: flex; gap: 16px; margin-bottom: 28px; flex-wrap: wrap;
}
.meta-item {
    display: flex; flex-direction: column; gap: 4px;
    padding: 12px 20px; border-radius: var(--radius-sm);
    background: rgba(0, 212, 255, 0.05);
    border: 1px solid rgba(0, 212, 255, 0.12);
    flex: 1; min-width: 130px;
}
.meta-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text-muted); font-weight: 700; }
.meta-value { font-size: 0.95rem; font-weight: 800; color: var(--cyan); }

/* ---------- Stats ---------- */
.stats {
    padding: 80px 0; position: relative;
    background: var(--bg-secondary);
}
.stats::before, .stats::after {
    content: ''; position: absolute; left: 0; right: 0;
    height: 1px; background: linear-gradient(90deg, transparent, var(--cyan), transparent);
    opacity: 0.2;
}
.stats::before { top: 0; }
.stats::after { bottom: 0; }
.stats__grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 32px; text-align: center; }
.stat { opacity: 0; transform: translateY(20px); }
.stat.animated { opacity: 1; transform: translateY(0); transition: 0.6s ease; }
.stat__number {
    display: block; font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 900; color: var(--cyan);
    letter-spacing: -2px;
}
.stat__label { font-size: 0.9rem; color: var(--text-secondary); font-weight: 500; margin-top: 4px; }

/* ---------- CTA Section ---------- */
.cta-section { padding: 100px 0; }
.cta-box {
    text-align: center; padding: 64px 40px;
    border-radius: var(--radius-xl);
    background: linear-gradient(135deg, rgba(0,212,255,0.08) 0%, rgba(0,168,204,0.04) 100%);
    border: 1px solid var(--border-glass);
    position: relative; overflow: hidden;
    opacity: 0; transform: translateY(30px);
}
.cta-box.animated { opacity: 1; transform: translateY(0); transition: 0.8s ease; }
.cta-box::before {
    content: ''; position: absolute; top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle at center, rgba(0,212,255,0.06) 0%, transparent 60%);
    animation: rotateBg 20s linear infinite;
}
.cta-box h2 {
    font-size: clamp(1.8rem, 3.5vw, 2.5rem);
    font-weight: 900; margin-bottom: 12px; position: relative;
}
.cta-box p { font-size: 1.05rem; color: var(--text-secondary); margin-bottom: 28px; position: relative; }
.cta-box__actions { position: relative; }
.cta-box__phone {
    font-size: 1.1rem; font-weight: 700; color: var(--cyan);
    margin-top: 16px; position: relative;
}

/* ---------- Footer ---------- */
.footer {
    padding: 64px 0 32px; background: var(--bg-secondary);
    border-top: 1px solid rgba(0, 212, 255, 0.08);
}
.footer__grid {
    display: grid; grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 40px; margin-bottom: 48px;
}
.footer__brand p { font-size: 0.9rem; color: var(--text-secondary); margin-top: 16px; line-height: 1.6; }
.footer__links { display: flex; flex-direction: column; gap: 10px; }
.footer__links h4 { font-size: 0.9rem; font-weight: 800; color: var(--cyan); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
.footer__links a { font-size: 0.85rem; color: var(--text-secondary); transition: var(--transition); }
.footer__links a:hover { color: var(--cyan); }
.footer__bottom {
    text-align: center; padding-top: 32px;
    border-top: 1px solid rgba(255,255,255,0.06);
}
.footer__bottom p { font-size: 0.8rem; color: var(--text-muted); }

/* ---------- WhatsApp Float ---------- */
.whatsapp-float {
    position: fixed; bottom: 28px; right: 28px; z-index: 900;
    width: 60px; height: 60px; border-radius: 50%;
    background: #25D366;
    display: flex; align-items: center; justify-content: center;
    box-shadow: 0 4px 24px rgba(37, 211, 102, 0.4);
    transition: var(--transition);
    animation: whatsappPulse 2s infinite;
}
.whatsapp-float:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 32px rgba(37, 211, 102, 0.6);
}
.whatsapp-float__tooltip {
    position: absolute; right: 72px; top: 50%; transform: translateY(-50%);
    background: #1a1a2e; color: #fff; padding: 8px 16px; border-radius: 8px;
    font-size: 0.8rem; font-weight: 700; white-space: nowrap;
    opacity: 0; pointer-events: none; transition: var(--transition);
    box-shadow: var(--shadow-card);
}
.whatsapp-float__tooltip::after {
    content: ''; position: absolute; right: -6px; top: 50%; transform: translateY(-50%);
    border: 6px solid transparent; border-left-color: #1a1a2e;
}
.whatsapp-float:hover .whatsapp-float__tooltip { opacity: 1; }

/* ---------- Extension Courses Section ---------- */
.extension-courses {
    padding: 100px 0;
    background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}
.extension-courses::before {
    content: '';
    position: absolute;
    top: -50%;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.08) 0%, transparent 70%);
    pointer-events: none;
}

.section-header {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 64px;
}
.section-title {
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: 900;
    margin-bottom: 16px;
    background: linear-gradient(135deg, #fff 0%, var(--cyan) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.section-subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
}

.extension-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 28px;
    margin-bottom: 48px;
}

.extension-card {
    background: var(--bg-card);
    backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    padding: 32px;
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}
.extension-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-cyan);
    opacity: 0;
    transition: var(--transition);
}
.extension-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-cyan);
    border-color: var(--cyan);
}
.extension-card:hover::before {
    opacity: 1;
}

.extension-card__icon {
    width: 80px;
    height: 80px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    transition: var(--transition);
}
.extension-card__icon svg {
    color: var(--cyan);
    transition: var(--transition);
}
.extension-card:hover .extension-card__icon {
    background: rgba(0, 212, 255, 0.15);
    border-color: var(--cyan);
    transform: scale(1.1);
}
.extension-card:hover .extension-card__icon svg {
    filter: drop-shadow(0 0 12px var(--cyan-glow));
}

.extension-card__title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 20px;
    line-height: 1.4;
    min-height: 60px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.extension-card__details {
    display: flex;
    gap: 20px;
    margin-bottom: 28px;
    width: 100%;
    justify-content: center;
    flex-wrap: wrap;
}
.detail-item {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}
.detail-item svg {
    color: var(--cyan);
    opacity: 0.7;
}
.detail-item.price {
    font-weight: 700;
    color: var(--cyan);
}
.detail-item.price svg {
    opacity: 1;
}

.extension-card__btn {
    width: 100%;
    justify-content: center;
    margin-top: auto;
}

.extension-footer {
    text-align: center;
    padding: 40px;
    background: var(--bg-glass);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}
.extension-footer p {
    font-size: 1rem;
    color: var(--text-secondary);
    margin: 0;
}
.extension-footer strong {
    color: var(--cyan);
}

/* ---------- Animations ---------- */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInDown {
    from { opacity: 0; transform: translateY(-20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; height: 20px; }
    50% { opacity: 1; height: 35px; }
}
@keyframes whatsappPulse {
    0%, 100% { box-shadow: 0 4px 24px rgba(37, 211, 102, 0.4); }
    50% { box-shadow: 0 4px 40px rgba(37, 211, 102, 0.6), 0 0 0 12px rgba(37, 211, 102, 0.1); }
}
@keyframes rotateBg {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
    .header__nav { display: none; }
    .header__cta { display: none; }
    .header__hamburger { display: flex; }
    .features__grid { grid-template-columns: repeat(2, 1fr); }
    .course__layout { grid-template-columns: 1fr; gap: 40px; }
    .course--reverse .course__layout { direction: ltr; }
    .footer__grid { grid-template-columns: 1fr 1fr; }
    .stats__grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
    .extension-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
}

@media (max-width: 640px) {
    :root { --header-h: 64px; }
    .container { padding: 0 16px; }
    .features { padding: 64px 0; }
    .features__grid { grid-template-columns: 1fr; }
    .course { padding: 64px 0; }
    .hero__controls { bottom: 80px; }
    .hero__actions { flex-direction: column; }
    .hero__actions .btn { width: 100%; justify-content: center; }
    .course__meta { flex-direction: column; }
    .stats__grid { grid-template-columns: 1fr 1fr; gap: 20px; }
    .stats { padding: 48px 0; }
    .cta-box { padding: 40px 24px; }
    .footer__grid { grid-template-columns: 1fr; gap: 32px; }
    .whatsapp-float { width: 54px; height: 54px; bottom: 20px; right: 20px; }
    .btn--lg { padding: 14px 28px; font-size: 0.95rem; }
    .extension-courses { padding: 64px 0; }
    .extension-grid { grid-template-columns: 1fr; gap: 20px; }
    .section-header { margin-bottom: 40px; }
    .extension-card { padding: 28px 20px; }
    .extension-card__title { font-size: 1.05rem; min-height: auto; }
    .extension-footer { padding: 28px 20px; }
    .extension-footer p { font-size: 0.9rem; }
}