/* ========================================
   Froza AC DTC — Mobile-First Stylesheet
   ======================================== */

/* --- Reset & Base --- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --blue: #1b4d8e;
    --blue-dark: #0f3460;
    --blue-light: #e8f0fa;
    --accent: #f59e0b;
    --accent-hover: #d97706;
    --dark: #111827;
    --gray-900: #1f2937;
    --gray-700: #374151;
    --gray-500: #6b7280;
    --gray-300: #d1d5db;
    --gray-100: #f3f4f6;
    --warm: #faf7f2;
    --white: #ffffff;
    --radius: 14px;
    --radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,.06);
    --shadow: 0 4px 16px rgba(0,0,0,.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,.12);
    --ff-body: 'DM Sans', sans-serif;
    --ff-display: 'Playfair Display', serif;
    --transition: .25s ease;
}

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
    font-family: var(--ff-body);
    font-size: 16px;
    line-height: 1.65;
    color: var(--dark);
    background: var(--white);
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { text-decoration: none; color: inherit; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* --- Layout --- */
.wrap {
    width: 100%;
    max-width: 720px;
    margin: 0 auto;
    padding: 0 20px;
}
.center { text-align: center; }

/* --- Sections --- */
.section {
    padding: 56px 0;
}
.bg-warm { background: var(--warm); }
.bg-dark { background: var(--dark); color: var(--white); }
.bg-dark h2,
.bg-dark h3,
.bg-dark p,
.bg-dark span { color: var(--white); }
.bg-blue { background: linear-gradient(145deg, var(--blue-dark), var(--blue)); color: var(--white); }
.bg-blue h2, .bg-blue h3, .bg-blue p, .bg-blue span { color: var(--white); }

/* --- Typography --- */
h1 {
    font-family: var(--ff-display);
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -.01em;
    margin-bottom: 16px;
}
h2 {
    font-family: var(--ff-display);
    font-size: 1.6rem;
    font-weight: 700;
    line-height: 1.25;
    margin-bottom: 16px;
}
h3 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 6px;
}
p { margin-bottom: 14px; color: var(--gray-700); }

/* --- Pill / Label --- */
.pill {
    display: inline-block;
    background: var(--blue-light);
    color: var(--blue);
    font-size: .75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .08em;
    padding: 6px 16px;
    border-radius: 50px;
    margin-bottom: 14px;
}
.label {
    display: block;
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .1em;
    color: var(--blue);
    margin-bottom: 8px;
}
.label--light { color: rgba(255,255,255,.7); }

/* --- Button --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background: var(--accent);
    color: var(--dark);
    font-weight: 800;
    font-size: 1rem;
    padding: 16px 32px;
    border-radius: 50px;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: var(--shadow-sm);
    text-align: center;
}
.btn:hover { background: var(--accent-hover); transform: translateY(-1px); box-shadow: var(--shadow); }
.btn--sm { font-size: .82rem; padding: 10px 22px; }
.btn--xl { font-size: 1.15rem; padding: 18px 40px; }
.btn--full { width: 100%; }
.btn--white { background: var(--white); color: var(--blue-dark); }
.btn--white:hover { background: var(--gray-100); }

.micro { font-size: .75rem; color: var(--gray-500); text-align: center; margin-top: 10px; }

/* --- Topbar --- */
.topbar {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background: var(--dark);
    color: var(--white);
    font-size: .72rem;
    font-weight: 600;
    padding: 8px 12px;
    text-align: center;
}
.topbar-stars { flex-shrink: 0; }

/* --- Header --- */
.header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(255,255,255,.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--gray-300);
    padding: 10px 0;
}
.header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.brand img { height: 22px; width: auto; }

/* --- Hero --- */
.hero {
    padding: 40px 0 48px;
    text-align: center;
    background: linear-gradient(180deg, var(--blue-light) 0%, var(--white) 100%);
}
.hero-sub {
    font-size: 1.05rem;
    color: var(--gray-700);
    max-width: 480px;
    margin: 0 auto 24px;
}
.hero-img {
    width: 280px;
    height: auto;
    margin: 0 auto 28px;
    filter: drop-shadow(0 20px 40px rgba(0,0,0,.12));
}

/* --- Check list --- */
.check-list {
    list-style: none;
    text-align: left;
    max-width: 360px;
    margin: 0 auto 28px;
}
.check-list li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: .92rem;
    font-weight: 500;
    margin-bottom: 10px;
    color: var(--gray-900);
}
.check-list li img { flex-shrink: 0; margin-top: 3px; }

/* --- Press bar --- */
.press-bar {
    padding: 28px 0;
    background: var(--gray-100);
    text-align: center;
}
.press-label {
    font-size: .68rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: .12em;
    color: var(--gray-500);
    margin-bottom: 14px;
}
.press-logos {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 24px;
    opacity: .45;
}
.press-logos img { height: 16px; width: auto; }

/* --- Problem --- */
.problem-list { margin: 24px 0; }
.problem-item {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 18px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}
.problem-emoji { font-size: 1.5rem; flex-shrink: 0; line-height: 1; }
.problem-item p { margin: 0; font-size: .92rem; }
.centered-text { text-align: center; font-size: 1rem; margin-top: 8px; }

/* --- Slide Section --- */
.slide-section { text-align: center; }
.slide-img {
    width: 100%;
    max-width: 400px;
    margin: 0 auto 28px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}
.slide-section p { text-align: left; }

/* --- Highlight Box --- */
.highlight-box {
    display: flex;
    align-items: flex-start;
    gap: 14px;
    background: var(--white);
    border-radius: var(--radius);
    padding: 18px;
    margin: 20px 0;
    box-shadow: var(--shadow);
    text-align: left;
}
.highlight-icon { font-size: 1.5rem; flex-shrink: 0; }
.highlight-box p { margin: 0; font-size: .92rem; }

/* --- Stat Row --- */
.stat-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 14px;
    margin: 24px 0;
}
.stat-card {
    background: rgba(255,255,255,.08);
    border: 1px solid rgba(255,255,255,.15);
    border-radius: var(--radius);
    padding: 22px 14px;
    text-align: center;
}
.stat-number {
    display: block;
    font-family: var(--ff-display);
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent);
    margin-bottom: 4px;
}
.stat-card p { margin: 0; font-size: .82rem; }

/* --- Features --- */
.features-hero {
    width: 180px;
    margin: 0 auto 28px;
    filter: drop-shadow(0 12px 24px rgba(0,0,0,.25));
}
.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 16px;
}
.feature-card {
    background: rgba(255,255,255,.06);
    border: 1px solid rgba(255,255,255,.1);
    border-radius: var(--radius);
    padding: 22px;
    text-align: center;
}
.feature-card img {
    width: 56px;
    height: 56px;
    margin: 0 auto 12px;
    border-radius: var(--radius-sm);
}
.feature-card h3 { font-size: .95rem; }
.feature-card p { font-size: .85rem; margin: 0; opacity: .85; }

/* --- Steps / How It Works --- */
.steps-hero-img {
    width: 280px;
    height: auto;
    margin: 0 auto 32px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
}
.steps-list { text-align: left; }
.step-compact {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    margin-bottom: 24px;
}
.step-compact:last-child { margin-bottom: 0; }
.step-num {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    background: var(--blue);
    color: var(--white);
    font-size: .8rem;
    font-weight: 800;
    border-radius: 50%;
}
.step-body h3 { font-size: 1.05rem; margin-bottom: 4px; }
.step-body p { font-size: .9rem; margin: 0; }

/* --- Comparison Table --- */
.compare-table {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    background: var(--white);
    margin: 28px 0;
}
.compare-header {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    background: var(--gray-100);
    padding: 14px;
    align-items: center;
    gap: 8px;
}
.compare-col {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    font-size: .72rem;
    font-weight: 700;
    text-transform: uppercase;
}
.compare-col img { border-radius: 50%; }
.compare-col--winner { color: var(--blue); }
.compare-feature-col { visibility: hidden; }
.compare-row {
    display: grid;
    grid-template-columns: 1.2fr 1fr 1fr;
    padding: 12px 14px;
    border-top: 1px solid var(--gray-100);
    align-items: center;
    font-size: .85rem;
}
.compare-row:nth-child(even) { background: var(--gray-100); }
.compare-feature { font-weight: 600; font-size: .82rem; }
.compare-cell { text-align: center; }
.compare-cell img {
    margin: 0 auto;
    width: 24px;
    height: 24px;
    filter: brightness(1.3) saturate(1.4);
}

/* --- Product Showcase (Blue Section) --- */
.product-hero {
    width: 260px;
    margin: 0 auto 24px;
    filter: drop-shadow(0 16px 32px rgba(0,0,0,.3));
}
.icon-row {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-bottom: 24px;
}
.icon-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    text-align: center;
}
.icon-circle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    background: rgba(255,255,255,.12);
    border: 1px solid rgba(255,255,255,.2);
    border-radius: 50%;
}
.icon-circle svg { width: 26px; height: 26px; }
.icon-item span { font-size: .72rem; font-weight: 600; opacity: .85; }
.specs-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 24px;
}
.spec {
    background: rgba(255,255,255,.1);
    border-radius: var(--radius-sm);
    padding: 10px;
    font-size: .78rem;
    font-weight: 600;
    text-align: center;
}

/* --- Guarantee --- */
.guarantee-badge {
    width: 120px;
    height: 120px;
    margin: 0 auto 20px;
}

/* --- Reviews --- */
.review-card {
    background: var(--white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    margin-bottom: 20px;
}
.review-img {
    width: 100%;
    height: 260px;
    object-fit: cover;
}
.review-body {
    padding: 22px;
}
.review-stars {
    margin-bottom: 10px;
}
.review-body h3 { font-size: 1rem; margin-bottom: 8px; }
.review-body p {
    font-size: .9rem;
    font-style: italic;
    color: var(--gray-700);
    margin-bottom: 14px;
}
.review-author {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: .82rem;
}
.review-author strong { color: var(--dark); }
.verified {
    display: flex;
    align-items: center;
    gap: 4px;
    color: var(--gray-500);
    font-size: .75rem;
}

/* --- Trust --- */
.trust-stack { margin-top: 24px; }
.trust-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 18px 0;
    border-bottom: 1px solid var(--gray-100);
}
.trust-item:last-child { border-bottom: none; }
.trust-item img { flex-shrink: 0; width: 48px; height: 48px; border-radius: var(--radius-sm); }
.trust-item h3 { font-size: .95rem; margin-bottom: 2px; }
.trust-item p { font-size: .85rem; margin: 0; }

/* --- FAQ --- */
.faq-list { margin-top: 24px; }
.faq-item {
    background: var(--white);
    border-radius: var(--radius);
    margin-bottom: 10px;
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}
.faq-btn {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 18px;
    font-size: .92rem;
    font-weight: 600;
    text-align: left;
    color: var(--dark);
    transition: background var(--transition);
}
.faq-btn:hover { background: var(--gray-100); }
.faq-icon {
    font-size: 1.3rem;
    font-weight: 300;
    transition: transform var(--transition);
    color: var(--gray-500);
}
.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height .35s ease, padding .35s ease;
}
.faq-answer p {
    padding: 0 18px 16px;
    font-size: .88rem;
    color: var(--gray-700);
    margin: 0;
}
.faq-item.open .faq-icon { transform: rotate(45deg); }
.faq-item.open .faq-answer { max-height: 300px; }

/* --- Final CTA --- */
.final-cta {
    padding: 56px 0;
    background: linear-gradient(180deg, var(--blue-light) 0%, var(--white) 100%);
    text-align: center;
}
.final-product {
    width: 160px;
    margin: 0 auto 20px;
    filter: drop-shadow(0 12px 24px rgba(0,0,0,.1));
}

/* --- Footer --- */
.footer {
    padding: 32px 0;
    background: var(--dark);
    color: rgba(255,255,255,.5);
    text-align: center;
}
.footer-logo { margin: 0 auto 14px; opacity: .6; }
.footer-disc { font-size: .68rem; margin-bottom: 8px; color: rgba(255,255,255,.35); }
.footer-copy { font-size: .72rem; margin: 0; }

/* --- Sticky Bar --- */
.sticky-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--white);
    border-top: 1px solid var(--gray-300);
    padding: 10px 0;
    box-shadow: 0 -4px 20px rgba(0,0,0,.08);
    transform: translateY(100%);
    transition: transform .3s ease;
}
.sticky-bar.visible { transform: translateY(0); }
.sticky-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}
.sticky-left {
    display: flex;
    align-items: center;
    gap: 8px;
}
.sticky-left img:first-child { border-radius: 6px; }
.sticky-text { font-weight: 700; font-size: .85rem; }

/* --- Fade-in on scroll --- */
.fade-target {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity .6s ease, transform .6s ease;
}
.fade-target.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* ========================================
   Responsive — Tablet (600px+)
   ======================================== */
@media (min-width: 600px) {
    h1 { font-size: 2.5rem; }
    h2 { font-size: 1.9rem; }
    .wrap { padding: 0 32px; }
    .section { padding: 72px 0; }
    .hero { padding: 56px 0 64px; }
    .hero-img { width: 340px; }
    .slide-img { max-width: 480px; }
    .features-grid { grid-template-columns: 1fr 1fr; }
    .steps-hero-img { width: 340px; }
    .review-card {
        display: flex;
        flex-direction: row;
    }
    .review-img {
        width: 200px;
        height: auto;
        min-height: 200px;
    }
}

/* ========================================
   Responsive — Desktop (1024px+)
   ======================================== */
@media (min-width: 1024px) {
    .wrap { max-width: 960px; }
    h1 { font-size: 2.8rem; }
    h2 { font-size: 2.1rem; }
    .hero-img { width: 380px; }
    .features-grid { grid-template-columns: 1fr 1fr 1fr; }
    .features-hero { width: 240px; }
    .slide-img { max-width: 520px; }
    .btn--full { width: auto; min-width: 320px; }
    .compare-table { max-width: 600px; margin: 28px auto; }
    .stat-card { padding: 28px 20px; }
    .stat-number { font-size: 2.2rem; }
}