/* =========================================
   BIẾN MÀU SẮC DỊU MẮT & DARK MODE
========================================= */
:root {
    --bg-color: #eef2f6;      
    --card-bg: #ffffff;       
    --primary-color: #0066ff;
    --text-color: #334155;    
    --text-dim: #64748b;
    --border-color: #cbd5e1;
    --header-bg: rgba(255, 255, 255, 0.95);
    --header-text: #1e293b;
    --header-glass-bg: rgba(255, 255, 255, 0.15);
    --header-glass-border: rgba(255, 255, 255, 0.2);
    --transition: all 0.3s ease;
}

[data-theme="dark"] {
    --bg-color: #0f172a;
    --card-bg: #1e293b;
    --primary-color: #3b82f6;
    --text-color: #f8fafc;
    --text-dim: #94a3b8;
    --border-color: #334155;
    --header-bg: rgba(15, 23, 42, 0.95);
    --header-text: #f8fafc;
    --header-glass-bg: rgba(0, 0, 0, 0.5);
    --header-glass-border: rgba(255, 255, 255, 0.05);
}

/* =========================================
   THIẾT LẬP CHUNG
========================================= */
* { margin: 0; padding: 0; box-sizing: border-box; font-family: 'Inter', sans-serif; }
html, body { width: 100%; overflow-x: hidden; } /* Khóa tràn viền ngang chống lỗi mobile */
body { background-color: var(--bg-color); color: var(--text-color); line-height: 1.6; transition: background-color 0.3s, color 0.3s; }
.container { max-width: 1200px; margin: 0 auto; padding: 4rem 5%; }

/* =========================================
   HEADER & FOOTER (Trang Con)
========================================= */
header { 
    padding: 1.2rem 5%; display: flex; justify-content: space-between; align-items: center; 
    background: var(--header-bg); position: sticky; top: 0; z-index: 1000; 
    backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-color); 
    box-shadow: 0 2px 10px rgba(0,0,0,0.05); transition: var(--transition);
}
a.logo { font-size: 1.5rem; font-weight: 800; color: var(--primary-color); text-transform: uppercase; letter-spacing: 1px; transition: color 0.3s; text-decoration: none; display: inline-block; position: relative; z-index: 1001; }

nav { display: flex; align-items: center; }
nav a { color: var(--header-text); text-decoration: none; margin-left: 25px; font-weight: 600; transition: var(--transition); }
nav a:hover, nav a.active { color: var(--primary-color); }

.theme-toggle { width: 60px; height: 30px; border-radius: 30px; background-color: var(--border-color); border: none; position: relative; cursor: pointer; margin-left: 25px; transition: var(--transition); display: flex; align-items: center; box-shadow: inset 0 2px 4px rgba(0,0,0,0.1); }
.toggle-circle { width: 24px; height: 24px; background-color: #ffffff; border-radius: 50%; position: absolute; left: 3px; display: flex; justify-content: center; align-items: center; transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1), background-color 0.4s; box-shadow: 0 2px 5px rgba(0,0,0,0.2); }
.toggle-circle i { font-size: 0.8rem; color: #f59e0b; transition: var(--transition); }
[data-theme="dark"] .theme-toggle { background-color: var(--primary-color); }
[data-theme="dark"] .toggle-circle { transform: translateX(30px); background-color: #1e293b; }
[data-theme="dark"] .toggle-circle i { color: #f8fafc; }

.menu-btn { display: none; font-size: 1.8rem; cursor: pointer; color: var(--header-text); z-index: 1001; transition: var(--transition); }
.close-menu { display: none; font-size: 1.8rem; cursor: pointer; color: var(--text-color); margin-bottom: 2rem; align-self: flex-end; }

/* HEADER KÍNH MỜ (Trang Chủ) */
header.header-transparent { position: fixed; top: 0; left: 0; width: 100%; background: var(--header-glass-bg); backdrop-filter: blur(8px); -webkit-backdrop-filter: blur(8px); border-bottom: 1px solid var(--header-glass-border); box-shadow: none; }
header.header-transparent a.logo { color: #ffffff; text-shadow: 0 2px 5px rgba(0,0,0,0.6); }
header.header-transparent nav a { color: #ffffff; text-shadow: 0 2px 5px rgba(0,0,0,0.6); }
header.header-transparent nav a:hover { color: var(--accent-yellow, #facc15); }
header.header-transparent .theme-toggle { background-color: rgba(255,255,255,0.3); }
header.header-transparent .menu-btn { color: #ffffff; text-shadow: 0 2px 5px rgba(0,0,0,0.6); }

header.header-transparent.scrolled { background: var(--header-bg); border-bottom: 1px solid var(--border-color); box-shadow: 0 2px 10px rgba(0,0,0,0.05); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); }
header.header-transparent.scrolled a.logo { color: var(--primary-color); text-shadow: none; }
header.header-transparent.scrolled nav a { color: var(--header-text); text-shadow: none; }
header.header-transparent.scrolled nav a:hover { color: var(--primary-color); }
header.header-transparent.scrolled .theme-toggle { background-color: var(--border-color); }
[data-theme="dark"] header.header-transparent.scrolled .theme-toggle { background-color: var(--primary-color); }
header.header-transparent.scrolled .menu-btn { color: var(--header-text); text-shadow: none; }

footer { text-align: center; padding: 3rem 2rem; background: var(--card-bg); color: var(--text-dim); border-top: 1px solid var(--border-color); font-weight: 500; transition: var(--transition); }

/* =========================================
   NÚT BẤM CHUNG
========================================= */
.btn, .ac-btn { border: none; cursor: pointer; font-family: inherit; }
.btn { display: inline-block; padding: 1rem 2rem; background: var(--primary-color); color: #fff; text-decoration: none; border-radius: 8px; font-weight: 700; transition: var(--transition); box-shadow: 0 4px 15px rgba(0, 102, 255, 0.3); }
.btn:hover { transform: translateY(-3px); box-shadow: 0 8px 25px rgba(0, 102, 255, 0.4); }
.btn-outline { display: inline-flex; align-items: center; gap: 8px; padding: 0.6rem 1.2rem; border: 1.5px solid var(--primary-color); color: var(--primary-color); text-decoration: none; border-radius: 50px; font-weight: 600; transition: var(--transition); background: transparent; }
.btn-outline:hover { background: var(--primary-color); color: #fff; box-shadow: 0 4px 15px rgba(0, 102, 255, 0.2); }

/* =========================================
   HERO SLIDER
========================================= */
.slider-container { width: 100%; height: 100vh; min-height: 500px; position: relative; overflow: hidden; }
.slider-track { display: flex; width: 300%; height: 100%; transition: transform 0.8s cubic-bezier(0.4, 0, 0.2, 1); }
.slide { width: 33.3333%; height: 100%; position: relative; }
.slide::after { content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0; background: rgba(15, 23, 42, 0.5); z-index: 1; }
.slide img { width: 100%; height: 100%; object-fit: cover; }
.slide-content { position: absolute; top: 50%; left: 50%; transform: translate(-50%, -50%); text-align: center; z-index: 2; width: 90%; max-width: 800px; }
.slide-content h2 { font-size: 3.5rem; margin-bottom: 1rem; color: #fff; text-shadow: 0 2px 10px rgba(0,0,0,0.5); font-weight: 800; line-height: 1.2; }
.slide-content p { font-size: 1.2rem; color: #f8fafc; margin-bottom: 2rem; text-shadow: 0 2px 10px rgba(0,0,0,0.5); }
.slider-btn { position: absolute; top: 50%; transform: translateY(-50%); background: rgba(255, 255, 255, 0.2); color: #fff; border: 1px solid rgba(255,255,255,0.5); width: 50px; height: 50px; border-radius: 50%; font-size: 1.5rem; cursor: pointer; z-index: 10; transition: var(--transition); display: flex; align-items: center; justify-content: center; backdrop-filter: blur(5px); -webkit-backdrop-filter: blur(5px); }
.slider-btn:hover { background: var(--primary-color); border-color: var(--primary-color); }
.prev-btn { left: 20px; }
.next-btn { right: 20px; }
.slider-dots { position: absolute; bottom: 30px; left: 50%; transform: translateX(-50%); display: flex; gap: 10px; z-index: 3; }
.dot { width: 12px; height: 12px; border-radius: 50%; background: rgba(255,255,255,0.4); cursor: pointer; transition: var(--transition); }
.dot.active { background: var(--primary-color); width: 24px; border-radius: 10px; }

/* =========================================
   VẤN ĐỀ KHÁCH HÀNG (Style hệt trong ảnh)
========================================= */
.problem-section { 
    background: var(--card-bg); 
    padding: 4rem 5%; 
    border-radius: 20px; 
    margin-bottom: 4rem; 
    border: 1px solid var(--border-color); 
    box-shadow: 0 10px 40px rgba(0,0,0,0.06); 
    transition: var(--transition); 
}
.problem-section h2 { 
    text-align: center; 
    font-size: 2.2rem; 
    margin-bottom: 3.5rem; 
    color: var(--primary-color); 
    font-weight: 800; 
}
.problem-row { 
    display: grid; 
    grid-template-columns: repeat(3, 1fr); 
    gap: 3rem 2rem; /* Khoảng cách dọc và ngang */
    margin-bottom: 3rem; 
}
/* Bỏ đường gạch ngang mờ đi cho giống hệt ảnh thiết kế */
.problem-row:last-child { 
    margin-bottom: 0; 
}
.problem-item { 
    display: flex; 
    gap: 15px; 
    align-items: flex-start; 
}
.problem-item i { 
    font-size: 1.5rem; 
    margin-top: 3px; 
    flex-shrink: 0; 
}
.problem-item h4 { 
    font-size: 1.1rem; 
    color: var(--text-color); 
    margin-bottom: 0.5rem; 
    font-weight: 700; 
    line-height: 1.4;
}
.problem-item p { 
    font-size: 0.95rem; 
    color: var(--text-dim); 
    line-height: 1.6; 
}
/* Tuỳ chỉnh font cho chữ "Giải pháp:" giống ảnh */
.problem-item h4 strong {
    color: var(--text-color);
}

/* =========================================
   CAROUSEL CARD
========================================= */
.home-section { margin-bottom: 5rem; }
.section-header { display: flex; justify-content: space-between; align-items: center; border-bottom: 2px solid var(--border-color); padding-bottom: 1rem; margin-bottom: 2rem; gap: 15px; flex-wrap: wrap; transition: var(--transition); }
.section-header h2 { font-size: 2.2rem; color: var(--text-color); margin: 0; border-left: 5px solid var(--primary-color); padding-left: 15px; font-weight: 800; }

.card-carousel { position: relative; width: 100%; }
.card-track { display: flex; gap: 1.5rem; overflow-x: auto; scroll-snap-type: x mandatory; padding: 20px 5px 30px 5px; margin: -20px -5px -30px -5px; scrollbar-width: none; }
.card-track::-webkit-scrollbar { display: none; }
.card-track > div { scroll-snap-align: start; flex-shrink: 0; transition: var(--transition); }
.card-track.col-2 > div { flex-basis: calc(50% - 0.75rem); }
.card-track.col-3 > div { flex-basis: calc(33.333% - 1rem); }
.card-track.col-4 > div { flex-basis: calc(25% - 1.125rem); }
.carousel-btn { position: absolute; top: 45%; transform: translateY(-50%); background: var(--card-bg); color: var(--text-color); border: 1px solid var(--border-color); width: 45px; height: 45px; border-radius: 50%; font-size: 1.2rem; cursor: pointer; z-index: 10; transition: var(--transition); display: flex; align-items: center; justify-content: center; box-shadow: 0 4px 10px rgba(0,0,0,0.08); }
.carousel-btn:hover { background: var(--primary-color); color: #fff; border-color: var(--primary-color); }
.card-carousel .prev-btn { left: -20px; }
.card-carousel .next-btn { right: -20px; }

/* Thẻ Demo */
.demo-card { background: var(--card-bg); border-radius: 15px; overflow: hidden; border: 1px solid var(--border-color); box-shadow: 0 4px 15px rgba(0,0,0,0.04); display: flex; flex-direction: column; height: 100%; transition: var(--transition); }
.demo-card:hover { transform: translateY(-8px); border-color: var(--primary-color); box-shadow: 0 15px 30px rgba(0,0,0,0.1); }
.demo-thumbnail { width: 100%; background: #000; position: relative; overflow: hidden; }
.demo-thumbnail.landscape { aspect-ratio: 16/9; }
.demo-thumbnail.portrait { aspect-ratio: 9/16; }
.demo-thumbnail video, .demo-thumbnail iframe { width: 100%; height: 100%; object-fit: cover; border: none; display: block; pointer-events: none; }
.demo-info { padding: 1.5rem; flex-grow: 1; }
.demo-info h3 { font-size: 1.2rem; margin-bottom: 0.5rem; color: var(--text-color); font-weight: 700; }
.demo-info p { color: var(--text-dim); font-size: 0.95rem; }

/* Thẻ Account */
.account-card { background: var(--card-bg); border-radius: 15px; padding: 2rem 1.5rem; border: 1px solid var(--border-color); position: relative; display: flex; flex-direction: column; align-items: flex-start; box-shadow: 0 4px 15px rgba(0,0,0,0.04); height: 100%; transition: var(--transition); }
.account-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 5px; background: linear-gradient(90deg, var(--primary-color), #00c6ff); border-radius: 15px 15px 0 0; transition: var(--transition); opacity: 0.8;}
.account-card:hover { transform: translateY(-8px); box-shadow: 0 20px 40px rgba(0, 102, 255, 0.1); border-color: #bbd6fe; }
.account-card:hover::before { opacity: 1; }
.ac-icon { font-size: 2.5rem; color: var(--primary-color); margin-bottom: 1.2rem; }
.ac-title { font-size: 1.4rem; color: var(--text-color); margin-bottom: 0.5rem; font-weight: 800; text-transform: uppercase; }
.ac-price { font-size: 2.2rem; font-weight: 800; color: var(--text-color); margin-bottom: 1.5rem; display: flex; align-items: baseline; gap: 5px; }
.ac-price span { font-size: 1rem; color: var(--text-dim); font-weight: 500; }
.ac-features { list-style: none; width: 100%; margin-bottom: 1.5rem; flex-grow: 1; border-top: 1px solid var(--border-color); padding-top: 1rem; }
.ac-features li { font-size: 0.95rem; color: var(--text-dim); margin-bottom: 0.8rem; display: flex; align-items: flex-start; gap: 10px; font-weight: 500; }
.ac-features li i { color: #10b981; font-size: 1rem; margin-top: 3px; }
.ac-btn { display: inline-block; width: 100%; text-align: center; padding: 0.8rem; border-radius: 8px; background: rgba(0, 102, 255, 0.1); color: var(--primary-color); font-weight: 700; text-decoration: none; transition: var(--transition); border: 1px solid transparent; }
.account-card:hover .ac-btn { background: var(--primary-color); color: #fff; }

/* =========================================
   TRANG CON (CHI TIẾT & LIÊN HỆ)
========================================= */
.page-title { text-align: center; margin-bottom: 4rem; }
.page-title h1 { font-size: 2.8rem; color: var(--text-color); margin-bottom: 1rem; font-weight: 800; transition: var(--transition); }
.page-title p { color: var(--text-dim); font-size: 1.1rem; }

.category-title { font-size: 1.8rem; color: var(--text-color); margin: 3rem 0 1.5rem; border-left: 5px solid var(--primary-color); padding-left: 15px; font-weight: 800; }
.video-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; }

.course-card-detail { background: var(--card-bg); padding: 2rem; border-radius: 15px; margin-bottom: 2rem; border: 1px solid var(--border-color); display: flex; gap: 2rem; flex-wrap: wrap; box-shadow: 0 4px 15px rgba(0,0,0,0.04); transition: var(--transition); }
.course-card-detail:hover { border-color: var(--primary-color); box-shadow: 0 15px 30px rgba(0,0,0,0.1); }
.course-video { flex: 1.5; min-width: 300px; border-radius: 10px; overflow: hidden; background: #000; }
.course-video video { width: 100%; height: 100%; object-fit: cover; display: block; }
.course-info-detail { flex: 1; min-width: 300px; display: flex; flex-direction: column; justify-content: center; }
.course-info-detail h3 { font-size: 1.8rem; margin-bottom: 1rem; color: var(--text-color); font-weight: 800; }
.course-info-detail ul { list-style: none; margin-bottom: 1.5rem; color: var(--text-dim); }
.course-info-detail ul li { margin-bottom: 0.8rem; display: flex; gap: 10px; }
.course-info-detail ul li i { color: #10b981; margin-top: 5px; }

.pricing-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 2rem; justify-content: center; }

/* TRANG LIÊN HỆ */
.contact-wrapper { display: flex; justify-content: center; align-items: center; padding: 2rem 0; }
.contact-single-card { background: var(--card-bg); padding: 3rem 4rem; border-radius: 20px; border: 1px solid var(--border-color); box-shadow: 0 10px 40px rgba(0,0,0,0.06); width: 100%; max-width: 600px; transition: var(--transition); }
.contact-single-card:hover { box-shadow: 0 15px 50px rgba(0,0,0,0.12); border-color: var(--primary-color); }
.contact-item-row { display: flex; align-items: center; gap: 20px; padding: 1.5rem 0; border-bottom: 1px solid var(--border-color); text-decoration: none; color: var(--text-color); transition: var(--transition); }
.contact-item-row:last-child { border-bottom: none; padding-bottom: 0; }
.contact-item-row:first-child { padding-top: 0; }
.contact-item-row i { font-size: 2.5rem; color: var(--text-dim); transition: var(--transition); width: 50px; text-align: center; }
.contact-item-info h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 0.2rem; transition: var(--transition); }
.contact-item-info p { font-size: 1rem; color: var(--text-dim); }
.contact-item-row.zalo:hover i { color: #0068ff; transform: scale(1.1); } .contact-item-row.zalo:hover h3 { color: #0068ff; }
.contact-item-row.email:hover i { color: #ea4335; transform: scale(1.1); } .contact-item-row.email:hover h3 { color: #ea4335; }
.contact-item-row.phone:hover i { color: #10b981; transform: scale(1.1); } .contact-item-row.phone:hover h3 { color: #10b981; }
.contact-item-row.tiktok:hover i { color: #ff0050; transform: scale(1.1); } .contact-item-row.tiktok:hover h3 { color: #ff0050; }


/* =========================================
   MODAL LIÊN HỆ (POPUP CHỐT SALE) - ĐÃ FIX RESPONSIVE LỆCH MÀN HÌNH
========================================= */
.modal-overlay {
    position: fixed !important; 
    top: 0 !important; 
    left: 0 !important; 
    width: 100vw !important; 
    height: 100vh !important;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px); 
    -webkit-backdrop-filter: blur(4px);
    z-index: 9999; /* Đảm bảo nổi lên trên tất cả mọi thứ, kể cả menu */
    display: flex; 
    justify-content: center; 
    align-items: center;
    opacity: 0; 
    visibility: hidden; 
    transition: all 0.3s ease;
    padding: 20px; /* Chống kịch viền màn hình trên mobile */
    box-sizing: border-box;
}

.modal-overlay.active { 
    opacity: 1; 
    visibility: visible; 
}

.modal-content {
    background: var(--card-bg); 
    width: 100%; 
    max-width: 450px;
    border-radius: 20px; 
    padding: 2.5rem; 
    position: relative;
    transform: scale(0.9); 
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid var(--border-color); 
    box-shadow: 0 20px 50px rgba(0,0,0,0.3);
    margin: auto; /* Fallback chống lệch lề */
}

.modal-overlay.active .modal-content { 
    transform: scale(1); 
}

.close-modal {
    position: absolute; top: 15px; right: 15px;
    background: rgba(100, 116, 139, 0.1); border: none;
    width: 35px; height: 35px; border-radius: 50%;
    color: var(--text-color); font-size: 1.2rem; cursor: pointer;
    transition: var(--transition); display: flex; justify-content: center; align-items: center;
}

.close-modal:hover { background: #ef4444; color: #fff; }

.modal-header { text-align: center; margin-bottom: 1.5rem; }
.modal-header h3 { font-size: 1.8rem; color: var(--text-color); margin-bottom: 0.5rem; font-weight: 800; transition: var(--transition);}
.modal-header p { color: var(--text-dim); font-size: 0.95rem; }

.modal-contact-list { display: flex; flex-direction: column; gap: 12px; }
.m-contact-btn {
    display: flex; align-items: center; gap: 15px;
    padding: 12px 20px; border-radius: 12px; text-decoration: none;
    font-weight: 600; font-size: 1.1rem; transition: var(--transition);
    border: 1px solid var(--border-color); background: var(--bg-color); color: var(--text-color);
    cursor: pointer; width: 100%; text-align: left;
}

.m-contact-btn i { font-size: 1.5rem; width: 30px; text-align: center; }
.m-contact-btn.zalo:hover { background: #0068ff; color: #fff; border-color: #0068ff; }
.m-contact-btn.phone:hover { background: #10b981; color: #fff; border-color: #10b981; }
.m-contact-btn.fb:hover { background: #1877f2; color: #fff; border-color: #1877f2; }


/* =========================================
   RESPONSIVE (TỐI ƯU HÓA HOÀN TOÀN)
========================================= */
@media (max-width: 1024px) { 
    .card-track.col-4 > div { flex-basis: calc(33.333% - 1rem); } 
    .container { padding: 3rem 5%; }
}

@media (max-width: 768px) {
    /* Menu Mobile Setup */
    .menu-btn { display: block; }
    .close-menu { display: block; }
    nav { position: fixed; top: 0; right: -100%; width: 280px; height: 100vh; background: var(--card-bg); flex-direction: column; align-items: flex-start; padding: 30px 25px; transition: right 0.4s ease; box-shadow: -5px 0 20px rgba(0,0,0,0.15); z-index: 2000; }
    nav.nav-active { right: 0; }
    nav a { margin: 0 0 25px 0; font-size: 1.2rem; width: 100%; color: var(--text-color) !important; text-shadow: none !important; border-bottom: 1px solid var(--border-color); padding-bottom: 10px; }
    nav a:hover, nav a.active { color: var(--primary-color) !important; border-bottom-color: var(--primary-color); }
    .theme-toggle { margin: auto 0 0 0; width: 100%; justify-content: flex-start; background: transparent; box-shadow: none; padding: 10px 0; }
    .theme-toggle::after { content: "Sáng / Tối"; font-size: 1.1rem; font-weight: 600; color: var(--text-color); margin-left: 45px; }

    /* Hero Slider Mobile */
    .slider-container { height: 100vh; min-height: 450px; }
    .slide-content { width: 95%; }
    .slide-content h2 { font-size: 2.2rem; line-height: 1.3; }
    .slide-content p { font-size: 1rem; }
    .slider-btn { display: none; } 

    /* Section Mobile (Vấn đề / Giải pháp) */
    .section-header h2 { font-size: 1.8rem; }
    .problem-section { padding: 2.5rem 5%; }
    .problem-section h2 { font-size: 1.8rem; margin-bottom: 2rem; }
    .problem-row { grid-template-columns: 1fr; gap: 1.5rem; }
    .problem-row:last-child { border-top: none; padding-top: 0; } 

    /* Cards Mobile */
    .card-track { padding: 10px 5px 20px 5px; margin: -10px -5px -20px -5px; }
    .card-track.col-2 > div, .card-track.col-3 > div, .card-track.col-4 > div { flex-basis: 85%; }
    .carousel-btn { display: none; }

    /* Trang Con Mobile */
    .page-title h1 { font-size: 2.2rem; }
    .course-card-detail { flex-direction: column; padding: 1.5rem; }
    .course-video { width: 100%; min-width: auto; }
    .contact-single-card { padding: 2rem 1.5rem; }
    .contact-item-row { gap: 15px; }
    .contact-item-row i { font-size: 2rem; width: 40px; }
    .contact-item-info h3 { font-size: 1.1rem; }
    
    /* Responsive cho Popup Modal Mobile */
    .modal-content { padding: 2rem 1.5rem; }
    .modal-header h3 { font-size: 1.5rem; }
    .m-contact-btn { font-size: 1rem; padding: 10px 15px; }
}

@media (max-width: 480px) {
    .slide-content h2 { font-size: 1.8rem; }
    .section-header { flex-direction: column; align-items: flex-start; gap: 10px; }
    .btn-outline { width: 100%; justify-content: center; }
}