/* =============================================
   AI BUSINESS LANDING PAGE
   Color Palette: Deep Red, Black, Gold, White
   Matched to reference: trungcaha.com/ai-online-business
   ============================================= */

*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Deep Reds */
    --red-bg: #3A0000;
    --red-dark: #5A0000;
    --red-mid: #8B0000;
    --red-primary: #B40000;
    --red-bright: #CC0000;
    --red-bar: #9B1B1B;

    /* Gold */
    --gold: #FFD700;
    --gold-bright: #FFE03A;
    --gold-dark: #D4A800;

    /* Neutrals */
    --black: #0A0000;
    --black-pure: #000000;
    --white: #FFFFFF;
    --gray: #999999;
    --gray-light: #E0E0E0;

    /* Fonts */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Be Vietnam Pro', sans-serif;
}

html { scroll-behavior: smooth; }

body {
    font-family: var(--font-body);
    background: var(--black);
    color: var(--white);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* =========================================
   TOP BADGE BAR
   ========================================= */
.top-badge-bar {
    background: var(--gold);
    padding: 10px 20px;
    text-align: center;
}

.badge-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--black-pure);
    letter-spacing: 0.3px;
}

/* =========================================
   HERO SECTION
   ========================================= */
.hero {
    position: relative;
    min-height: 100vh;
    background: linear-gradient(
        160deg,
        var(--black) 0%,
        #1A0000 15%,
        var(--red-bg) 30%,
        var(--red-dark) 50%,
        var(--red-bg) 70%,
        #1A0000 85%,
        var(--black) 100%
    );
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

/* Glow effects */
.hero-bg-effects {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 1;
}

.hero-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(140px);
}

.hero-glow-1 {
    width: 700px;
    height: 700px;
    background: radial-gradient(circle, rgba(139, 0, 0, 0.5) 0%, transparent 70%);
    top: -250px;
    left: -150px;
    animation: glowPulse 8s ease-in-out infinite;
}

.hero-glow-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(120, 0, 0, 0.35) 0%, transparent 70%);
    bottom: -200px;
    right: -100px;
    animation: glowPulse 10s ease-in-out infinite reverse;
}

@keyframes glowPulse {
    0%, 100% { opacity: 0.6; transform: scale(1); }
    50% { opacity: 1; transform: scale(1.15); }
}

/* Hero Container */
.hero-container {
    position: relative;
    z-index: 10;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    padding: 60px 40px 40px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 50px;
    align-items: center;
    flex: 1;
}

/* =========================================
   LEFT COLUMN - CONTENT
   ========================================= */
.hero-content {
    animation: fadeInLeft 0.8s ease-out;
}

@keyframes fadeInLeft {
    from { opacity: 0; transform: translateX(-30px); }
    to { opacity: 1; transform: translateX(0); }
}

/* Title */
.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(3.5rem, 7vw, 6rem);
    font-weight: 900;
    line-height: 1;
    color: var(--gold);
    margin-bottom: 24px;
    text-shadow: 0 4px 30px rgba(255, 215, 0, 0.2);
}

.title-highlight {
    color: var(--gold);
}

/* Course Description Box */
.hero-course-box {
    background: rgba(139, 0, 0, 0.6);
    border: 2px solid rgba(255, 215, 0, 0.35);
    border-radius: 10px;
    padding: 16px 22px;
    margin-bottom: 20px;
}

.hero-course-box p {
    font-size: 1rem;
    font-weight: 600;
    color: var(--white);
    line-height: 1.5;
}

/* Audience line */
.hero-audience {
    font-size: 0.92rem;
    color: rgba(255, 255, 255, 0.85);
    margin-bottom: 22px;
    line-height: 1.5;
}

.hero-audience strong {
    color: var(--white);
}

/* =========================================
   FEATURE BARS (Red bars with yellow ✔)
   ========================================= */
.hero-features {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.feature-bar {
    display: flex;
    align-items: center;
    gap: 14px;
    background: linear-gradient(135deg, var(--red-bar), var(--red-primary));
    padding: 14px 20px;
    border-radius: 10px;
    font-size: 0.93rem;
    font-weight: 500;
    color: var(--white);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    box-shadow: 0 3px 12px rgba(0, 0, 0, 0.3);
}

.feature-bar:hover {
    transform: translateX(6px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.4);
}

.feature-check {
    flex-shrink: 0;
    width: 30px;
    height: 30px;
    background: var(--gold);
    color: var(--black-pure);
    font-size: 1rem;
    font-weight: 800;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    box-shadow: 0 2px 8px rgba(255, 215, 0, 0.4);
}

/* =========================================
   RIGHT COLUMN - FORM
   ========================================= */
.hero-form-wrapper {
    animation: fadeInRight 0.8s ease-out 0.2s both;
}

@keyframes fadeInRight {
    from { opacity: 0; transform: translateX(30px); }
    to { opacity: 1; transform: translateX(0); }
}

.form-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px 34px 36px;
    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.5),
        0 0 30px rgba(139, 0, 0, 0.2);
}

/* Form Header */
.form-header {
    text-align: center;
    margin-bottom: 22px;
}

.form-pre-title {
    font-size: 1rem;
    color: #555;
    margin-bottom: 4px;
    font-weight: 400;
}

.form-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--black-pure);
    line-height: 1.3;
}

.form-free {
    color: var(--red-bright);
    font-size: 2rem;
    font-weight: 800;
    font-style: italic;
}

/* Form Inputs */
.registration-form {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.form-group input {
    width: 100%;
    padding: 16px 18px;
    font-family: var(--font-body);
    font-size: 1rem;
    color: #333;
    background: var(--white);
    border: 1.5px solid var(--gray-light);
    border-radius: 8px;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-group input::placeholder {
    color: #aaa;
}

.form-group input:focus {
    border-color: var(--red-bright);
    box-shadow: 0 0 0 3px rgba(204, 0, 0, 0.08);
}

/* CTA Button - YELLOW/GOLD like reference */
.cta-button {
    width: 100%;
    padding: 18px 32px;
    background: var(--gold);
    color: var(--black-pure);
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.25s ease;
    margin-top: 4px;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.35);
    position: relative;
    overflow: hidden;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.35), transparent);
    transition: left 0.5s ease;
}

.cta-button:hover {
    background: var(--gold-bright);
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.5);
}

.cta-button:hover::before {
    left: 100%;
}

.cta-button:active {
    transform: translateY(0);
}

/* =========================================
   EVENT DETAILS BAR (bottom of hero)
   ========================================= */
.event-bar-wrapper {
    position: relative;
    z-index: 10;
    padding: 0 40px 40px;
    display: flex;
    justify-content: center;
}

.event-details {
    display: inline-flex;
    align-items: center;
    background: rgba(0, 0, 0, 0.5);
    border: 1.5px solid rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    padding: 16px 32px;
    backdrop-filter: blur(10px);
}

.event-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 0 24px;
}

.event-icon {
    font-size: 1.3rem;
    color: var(--gold);
}

.event-text {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--white);
    letter-spacing: 0.5px;
}

.event-divider {
    width: 1px;
    height: 30px;
    background: rgba(255, 255, 255, 0.2);
}

/* =========================================
   SECTION 2: PAIN POINTS
   ========================================= */
.pain-points {
    background: #F5F5F5;
    padding: 80px 20px;
}

.section-container {
    max-width: 800px;
    margin: 0 auto;
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.6rem, 3.5vw, 2.2rem);
    font-weight: 900;
    color: var(--red-mid);
    text-align: center;
    margin-bottom: 10px;
    line-height: 1.3;
}

.section-subtitle {
    text-align: center;
    font-size: 1rem;
    color: #888;
    margin-bottom: 40px;
    font-weight: 400;
}

/* Pain Cards */
.pain-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 40px;
}

.pain-card {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    background: var(--white);
    border: 1px solid #E0E0E0;
    border-left: 4px solid var(--red-mid);
    border-radius: 12px;
    padding: 24px 28px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.pain-card:nth-child(1) { animation-delay: 0.1s; }
.pain-card:nth-child(2) { animation-delay: 0.3s; }
.pain-card:nth-child(3) { animation-delay: 0.5s; }

.pain-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

@keyframes fadeInUp {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.pain-icon {
    flex-shrink: 0;
    width: 36px;
    height: 36px;
    border: 2.5px solid var(--red-bright);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.pain-icon span {
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--red-bright);
    line-height: 1;
}

.pain-card p {
    font-size: 0.98rem;
    color: #333;
    line-height: 1.7;
    flex: 1;
}

.pain-card p strong {
    color: var(--red-mid);
    font-weight: 700;
}

/* CTA Box */
.pain-cta-box {
    background: var(--red-mid);
    border-radius: 14px;
    padding: 36px 40px;
    text-align: center;
    box-shadow: 0 6px 20px rgba(139, 0, 0, 0.25);
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out 0.7s forwards;
}

.pain-cta-line1 {
    font-size: 1.05rem;
    color: var(--white);
    margin-bottom: 8px;
    font-weight: 500;
}

.pain-cta-line1 strong {
    color: var(--gold);
    font-weight: 700;
}

.pain-cta-line2 {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 16px;
}

.highlight-italic {
    font-style: italic;
    font-weight: 700;
    color: var(--gold);
}

.pain-cta-line3 {
    font-family: var(--font-heading);
    font-size: clamp(1.3rem, 3vw, 1.7rem);
    font-weight: 900;
    color: var(--white);
    line-height: 1.3;
}

.pain-cta-line3 strong {
    color: var(--gold);
}

/* =========================================
   SECTION 3: LEARNING OUTCOMES
   ========================================= */
.outcomes {
    background: linear-gradient(
        160deg,
        var(--black) 0%,
        #1A0000 30%,
        var(--red-bg) 50%,
        #1A0000 70%,
        var(--black) 100%
    );
    padding: 80px 20px;
}

.section-title-light {
    color: var(--gold) !important;
    margin-bottom: 40px !important;
}

.outcome-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.outcome-card {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 215, 0, 0.15);
    border-radius: 14px;
    padding: 30px 28px;
    transition: transform 0.3s ease, box-shadow 0.3s ease, border-color 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.outcome-card:nth-child(1) { animation-delay: 0.1s; }
.outcome-card:nth-child(2) { animation-delay: 0.2s; }
.outcome-card:nth-child(3) { animation-delay: 0.3s; }
.outcome-card:nth-child(4) { animation-delay: 0.4s; }

.outcome-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.3);
    border-color: rgba(255, 215, 0, 0.4);
}

.outcome-icon {
    font-size: 2.2rem;
    margin-bottom: 14px;
}

.outcome-card h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--gold);
    margin-bottom: 10px;
    line-height: 1.4;
}

.outcome-card p {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.8);
    line-height: 1.7;
}

/* =========================================
   SECTION 4: 3-DAY ROADMAP
   ========================================= */
.roadmap {
    background: #F5F5F5;
    padding: 80px 20px;
}

.section-container-wide {
    max-width: 900px;
}

.roadmap-timeline {
    display: flex;
    flex-direction: column;
    gap: 0;
    position: relative;
    padding-left: 40px;
}

/* Vertical timeline line */
.roadmap-timeline::before {
    content: '';
    position: absolute;
    left: 15px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(
        to bottom,
        var(--red-primary),
        var(--gold),
        var(--red-primary)
    );
    border-radius: 3px;
}

.roadmap-day {
    position: relative;
    margin-bottom: 32px;
}

.roadmap-day:last-child {
    margin-bottom: 0;
}

/* Circle dot on timeline */
.roadmap-day::before {
    content: '';
    position: absolute;
    left: -33px;
    top: 16px;
    width: 14px;
    height: 14px;
    background: var(--red-primary);
    border: 3px solid var(--white);
    border-radius: 50%;
    box-shadow: 0 0 0 3px var(--red-primary);
    z-index: 2;
}

.day-badge {
    display: inline-block;
    font-family: var(--font-heading);
    font-size: 0.85rem;
    font-weight: 800;
    color: var(--white);
    background: var(--red-primary);
    padding: 6px 20px;
    border-radius: 20px;
    letter-spacing: 1px;
    margin-bottom: 14px;
}

.day-badge-2 {
    background: var(--red-mid);
}

.day-badge-3 {
    background: linear-gradient(135deg, var(--red-mid), #D4A800);
}

.day-content {
    background: var(--white);
    border: 1px solid #E0E0E0;
    border-left: 4px solid var(--red-primary);
    border-radius: 12px;
    padding: 24px 28px;
    transition: box-shadow 0.3s ease;
}

.day-content:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.08);
}

.day-content h3 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--red-mid);
    margin-bottom: 14px;
    line-height: 1.4;
}

.day-list {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.day-list li {
    font-size: 0.95rem;
    color: #444;
    line-height: 1.7;
    padding-left: 22px;
    position: relative;
}

.day-list li::before {
    content: '✦';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--red-primary);
    font-size: 0.8rem;
}

.day-list li strong {
    color: #222;
    font-weight: 700;
}

.day-list li em {
    color: var(--red-bright);
    font-weight: 600;
}

/* =========================================
   SECTION 5: BEFORE & AFTER COMPARISON
   ========================================= */
.before-after {
    background: #F5F5F5;
    padding: 80px 20px;
}

.section-subtitle-light {
    color: rgba(255, 255, 255, 0.6) !important;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 24px;
}

.comparison-col {
    border-radius: 14px;
    overflow: hidden;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out forwards;
}

.comparison-before { animation-delay: 0.1s; }
.comparison-after { animation-delay: 0.3s; }

.comparison-header {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 16px 24px;
    font-family: var(--font-heading);
    font-size: 0.95rem;
    font-weight: 800;
    letter-spacing: 0.5px;
}

.comparison-header span {
    font-size: 1.2rem;
}

.comparison-header-before {
    background: #D32F2F;
    color: var(--white);
    border: none;
    border-radius: 14px 14px 0 0;
}

.comparison-header-after {
    background: #2E7D32;
    color: var(--white);
    border: none;
    border-radius: 14px 14px 0 0;
}

.comparison-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.comparison-before .comparison-list {
    background: #FFF5F5;
    border: 1px solid #FFCDD2;
    border-top: none;
    border-radius: 0 0 14px 14px;
}

.comparison-after .comparison-list {
    background: #F1F8E9;
    border: 1px solid #C8E6C9;
    border-top: none;
    border-radius: 0 0 14px 14px;
}

.comparison-list li {
    padding: 14px 24px;
    font-size: 0.93rem;
    color: #333;
    line-height: 1.6;
    border-bottom: 1px solid rgba(0, 0, 0, 0.06);
    position: relative;
    padding-left: 44px;
}

.comparison-list li:last-child {
    border-bottom: none;
}

.comparison-before .comparison-list li::before {
    content: '✗';
    position: absolute;
    left: 20px;
    top: 14px;
    color: #D32F2F;
    font-weight: 700;
    font-size: 0.9rem;
}

.comparison-after .comparison-list li::before {
    content: '✓';
    position: absolute;
    left: 20px;
    top: 14px;
    color: #2E7D32;
    font-weight: 700;
    font-size: 0.9rem;
}

/* =========================================
   SECTION 6: TRAINER
   ========================================= */
.trainer {
    background: linear-gradient(
        160deg,
        var(--black) 0%,
        #1A0000 30%,
        var(--red-bg) 50%,
        #1A0000 70%,
        var(--black) 100%
    );
    padding: 80px 20px;
}

.trainer-card {
    display: grid;
    grid-template-columns: auto 1fr;
    gap: 40px;
    align-items: center;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 215, 0, 0.15);
    border-radius: 18px;
    padding: 40px;
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.6s ease-out 0.2s forwards;
}

.trainer-photo {
    width: 220px;
    height: 220px;
    border-radius: 50%;
    overflow: hidden;
    border: 4px solid var(--gold);
    box-shadow:
        0 0 30px rgba(255, 215, 0, 0.2),
        0 10px 30px rgba(0, 0, 0, 0.4);
    flex-shrink: 0;
}

.trainer-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.trainer-name {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--gold);
    margin-bottom: 6px;
    text-shadow: 0 2px 10px rgba(255, 215, 0, 0.2);
}

.trainer-role {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    margin-bottom: 20px;
    font-weight: 500;
    font-style: italic;
}

.trainer-credentials {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.trainer-credentials li {
    font-size: 0.95rem;
    color: rgba(255, 255, 255, 0.85);
    line-height: 1.6;
    padding-left: 24px;
    position: relative;
}

.trainer-credentials li::before {
    content: '⭐';
    position: absolute;
    left: 0;
    top: 0;
    font-size: 0.8rem;
}

.trainer-credentials li strong {
    color: var(--gold);
    font-weight: 700;
}

/* =========================================
   SECTION 7: TRAINING GALLERY
   ========================================= */
.gallery {
    background: #FDF6E3;
    padding: 80px 20px;
}

.gallery .section-title {
    color: var(--red-mid) !important;
    font-size: clamp(2rem, 4.5vw, 2.8rem) !important;
    margin-bottom: 40px !important;
}

.gallery-wrapper {
    display: grid;
    grid-template-columns: 1fr 130px;
    gap: 16px;
    margin: 0 auto;
}

.section-container-wide.gallery-container {
    max-width: 1200px;
}

.gallery-main {
    position: relative;
    border-radius: 14px;
    overflow: hidden;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    aspect-ratio: 16 / 9;
    background: #000;
}

.gallery-main img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: opacity 0.4s ease;
}

.gallery-nav {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background: rgba(0, 0, 0, 0.5);
    color: var(--white);
    border: none;
    border-radius: 50%;
    font-size: 1.8rem;
    line-height: 1;
    cursor: pointer;
    transition: background 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 5;
}

.gallery-nav:hover {
    background: rgba(0, 0, 0, 0.75);
}

.gallery-prev { left: 12px; }
.gallery-next { right: 12px; }

.gallery-thumbs {
    display: flex;
    flex-direction: column;
    gap: 8px;
    overflow-y: auto;
    max-height: 100%;
    scrollbar-width: thin;
    scrollbar-color: var(--red-mid) transparent;
}

.gallery-thumbs .thumb {
    width: 100%;
    height: 80px;
    object-fit: cover;
    border-radius: 8px;
    cursor: pointer;
    border: 3px solid transparent;
    opacity: 0.6;
    transition: all 0.25s ease;
    flex-shrink: 0;
}

.gallery-thumbs .thumb:hover {
    opacity: 0.9;
}

.gallery-thumbs .thumb.active {
    border-color: var(--gold);
    opacity: 1;
    box-shadow: 0 2px 10px rgba(255, 215, 0, 0.4);
}

/* =========================================
   SECTION 8: BONUSES
   ========================================= */
.bonuses {
    background: #F5F5F5;
    padding: 80px 20px;
}

/* Bottom Hero Override */
.hero-bottom {
    min-height: auto;
}

.bonus-cards {
    display: flex;
    flex-direction: column;
    gap: 18px;
    margin-bottom: 30px;
}

.bonus-card {
    display: flex;
    align-items: flex-start;
    gap: 18px;
    background: var(--white);
    border: 1px solid #E0E0E0;
    border-left: 5px solid var(--gold);
    border-radius: 12px;
    padding: 24px 28px;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.bonus-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.08);
}

.bonus-badge {
    flex-shrink: 0;
    background: var(--red-mid);
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 0.75rem;
    font-weight: 800;
    padding: 5px 14px;
    border-radius: 20px;
    letter-spacing: 0.5px;
    margin-top: 2px;
}

.bonus-content h3 {
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 700;
    color: #222;
    margin-bottom: 10px;
    line-height: 1.4;
}

.bonus-content ul {
    list-style: none;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.bonus-content ul li {
    font-size: 0.93rem;
    color: #555;
    line-height: 1.5;
    padding-left: 20px;
    position: relative;
}

.bonus-content ul li::before {
    content: '✔';
    position: absolute;
    left: 0;
    color: var(--gold-dark);
    font-weight: 700;
    font-size: 0.85rem;
}

.bonus-content p {
    font-size: 0.93rem;
    color: #555;
    line-height: 1.6;
}

/* Divider */
.bonus-divider {
    text-align: center;
    margin: 10px 0 30px;
}

.bonus-divider span {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 800;
    color: var(--red-mid);
    background: #F5F5F5;
    padding: 0 20px;
    position: relative;
}

/* Pricing CTA */
.pricing-cta {
    text-align: center;
    margin-top: 50px;
    background: linear-gradient(135deg, var(--red-bg), var(--red-dark));
    border-radius: 18px;
    padding: 40px 30px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.pricing-value {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: 4px;
}

.price-strike {
    text-decoration: line-through;
    color: #FF6B6B;
    font-weight: 700;
    font-size: 1.2rem;
}

.pricing-note {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 20px;
    font-style: italic;
}

.pricing-label {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: 6px;
}

.pricing-free {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 6vw, 3.5rem);
    font-weight: 900;
    color: var(--gold);
    text-shadow: 0 4px 20px rgba(255, 215, 0, 0.3);
    margin-bottom: 4px;
}

.pricing-sub {
    font-family: var(--font-heading);
    font-size: 1rem;
    font-weight: 700;
    color: var(--gold);
    letter-spacing: 2px;
    margin-bottom: 24px;
}

.cta-button-large {
    display: inline-block;
    text-decoration: none;
    padding: 18px 50px;
    font-size: 1.3rem;
    animation: ctaPulse 2s ease-in-out infinite;
}

@keyframes ctaPulse {
    0%, 100% { box-shadow: 0 4px 15px rgba(255, 215, 0, 0.35); }
    50% { box-shadow: 0 4px 30px rgba(255, 215, 0, 0.6); transform: translateY(-2px); }
}

/* =========================================
   ZALO POPUP
   ========================================= */
.popup-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: 9999;
    justify-content: center;
    align-items: center;
    backdrop-filter: blur(4px);
}

.popup-overlay.active {
    display: flex;
    animation: fadeInOverlay 0.3s ease;
}

@keyframes fadeInOverlay {
    from { opacity: 0; }
    to { opacity: 1; }
}

.popup-card {
    background: var(--white);
    border-radius: 16px;
    padding: 40px 36px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    position: relative;
    border-top: 5px solid var(--red-bright);
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: popupSlide 0.4s ease;
}

@keyframes popupSlide {
    from { opacity: 0; transform: translateY(-30px) scale(0.95); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.popup-close {
    position: absolute;
    top: 12px;
    right: 16px;
    background: none;
    border: none;
    font-size: 1.8rem;
    color: #999;
    cursor: pointer;
    transition: color 0.2s;
    line-height: 1;
}

.popup-close:hover {
    color: #333;
}

.popup-title {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 900;
    color: var(--red-bright);
    margin-bottom: 12px;
}

.popup-desc {
    font-size: 0.95rem;
    color: #444;
    line-height: 1.6;
    margin-bottom: 24px;
}

.popup-desc strong {
    color: #111;
}

.popup-zalo-btn {
    display: block;
    background: #4A90D9;
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 1.05rem;
    font-weight: 800;
    padding: 16px 24px;
    border-radius: 30px;
    text-decoration: none;
    letter-spacing: 0.5px;
    margin-bottom: 20px;
    transition: background 0.2s ease, transform 0.2s ease;
    box-shadow: 0 4px 15px rgba(74, 144, 217, 0.3);
}

.popup-zalo-btn:hover {
    background: #3A7BC8;
    transform: translateY(-2px);
}

.popup-link-label {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 4px;
}

.popup-link {
    font-size: 0.95rem;
    color: #4A90D9;
    font-weight: 600;
    text-decoration: none;
    display: block;
    margin-bottom: 20px;
}

.popup-link:hover {
    text-decoration: underline;
}

.popup-warning {
    background: #FFF8E1;
    border: 1px solid #FFE082;
    border-radius: 10px;
    padding: 14px 18px;
    font-size: 0.85rem;
    color: #555;
    line-height: 1.6;
    margin-bottom: 20px;
}

.popup-warning strong {
    color: var(--red-bright);
}

.popup-countdown {
    display: flex;
    justify-content: center;
    gap: 10px;
}

.countdown-box {
    width: 52px;
    height: 52px;
    background: #27AE60;
    color: var(--white);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 800;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 3px 10px rgba(39, 174, 96, 0.3);
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 1024px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 35px;
        padding: 50px 30px 30px;
    }

    .hero-content { order: 1; }
    .hero-form-wrapper {
        order: 0;
        max-width: 480px;
        margin: 0 auto;
        width: 100%;
    }

    .hero-title {
        text-align: center;
    }

    .hero-course-box,
    .hero-audience {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .hero-container {
        padding: 35px 18px 25px;
        gap: 28px;
    }

    .hero-title {
        font-size: clamp(2.8rem, 12vw, 4rem);
    }

    .hero-course-box {
        padding: 14px 18px;
    }

    .feature-bar {
        padding: 12px 16px;
        font-size: 0.88rem;
    }

    .feature-check {
        width: 26px;
        height: 26px;
        font-size: 0.85rem;
    }

    .event-details {
        flex-direction: column;
        gap: 12px;
        padding: 18px 24px;
    }

    .event-divider {
        width: 60%;
        height: 1px;
    }

    .event-item {
        padding: 0;
    }

    .event-bar-wrapper {
        padding: 0 18px 30px;
    }

    .form-card {
        padding: 28px 22px;
    }

    .badge-text {
        font-size: 0.82rem;
    }

    /* Pain Points responsive */
    .pain-points {
        padding: 50px 16px;
    }

    .pain-card {
        padding: 18px 20px;
        gap: 14px;
    }

    .pain-cta-box {
        padding: 28px 24px;
    }

    /* Outcomes responsive */
    .outcomes {
        padding: 50px 16px;
    }

    .outcome-cards {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .outcome-card {
        padding: 22px 20px;
    }

    /* Roadmap responsive */
    .roadmap {
        padding: 50px 16px;
    }

    .roadmap-timeline {
        padding-left: 30px;
    }

    .roadmap-day::before {
        left: -23px;
        width: 12px;
        height: 12px;
    }

    .roadmap-timeline::before {
        left: 11px;
    }

    .day-content {
        padding: 18px 20px;
    }

    /* Before/After responsive */
    .before-after {
        padding: 50px 16px;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .comparison-list li {
        padding: 12px 20px 12px 38px;
        font-size: 0.88rem;
    }

    .comparison-before .comparison-list li::before,
    .comparison-after .comparison-list li::before {
        left: 16px;
    }

    /* Trainer responsive */
    .trainer {
        padding: 50px 16px;
    }

    .trainer-card {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 24px;
        padding: 30px 24px;
    }

    .trainer-photo {
        width: 180px;
        height: 180px;
        margin: 0 auto;
    }

    .trainer-credentials li {
        text-align: left;
    }

    /* Gallery responsive */
    .gallery {
        padding: 50px 16px;
    }

    .gallery-wrapper {
        grid-template-columns: 1fr;
        gap: 12px;
    }

    .gallery-thumbs {
        flex-direction: row;
        overflow-x: auto;
        overflow-y: hidden;
        max-height: none;
    }

    .gallery-thumbs .thumb {
        width: 70px;
        height: 55px;
        flex-shrink: 0;
    }

    .gallery-nav {
        width: 36px;
        height: 36px;
        font-size: 1.4rem;
    }

    /* Bonuses responsive */
    .bonuses {
        padding: 50px 16px;
    }

    .bonus-card {
        flex-direction: column;
        gap: 10px;
        padding: 18px 20px;
    }

    .pricing-cta {
        padding: 30px 20px;
    }

    .cta-button-large {
        padding: 16px 36px;
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.8rem;
    }

    .cta-button {
        font-size: 1.1rem;
        padding: 16px 20px;
    }

    .form-group input {
        padding: 13px 15px;
    }

    /* Pain Points mobile */
    .pain-card p {
        font-size: 0.9rem;
    }

    .pain-icon {
        width: 30px;
        height: 30px;
    }

    .pain-icon span {
        font-size: 0.95rem;
    }

    .pain-cta-box {
        padding: 24px 18px;
    }

    .pain-cta-line3 {
        font-size: 1.2rem;
    }

    /* Outcomes mobile */
    .outcome-card h3 {
        font-size: 1rem;
    }

    .outcome-card p {
        font-size: 0.88rem;
    }

    /* Roadmap mobile */
    .day-content h3 {
        font-size: 1rem;
    }

    .day-list li {
        font-size: 0.88rem;
    }
}