/* Theme variables and basic page settings */
:root {
    --color-bg: #f7f3ea;
    --color-surface: #fffaf1;
    --color-surface-strong: #ffffff;
    --color-text: #17212b;
    --color-muted: #5d6673;
    --color-primary: #256f72;
    --color-primary-strong: #174f52;
    --color-accent: #d85f3a;
    --color-border: #ddd3c3;
    --shadow-soft: 0 18px 40px rgba(23, 33, 43, 0.12);
    --shadow-card: 0 12px 26px rgba(23, 33, 43, 0.1);
    --font-main: Arial, Helvetica, sans-serif;
    --space-xs: 0.5rem;
    --space-sm: 0.75rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2.25rem;
    --space-2xl: 3.5rem;
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 22px;
    --transition: 180ms ease;
}

body.dark-theme {
    --color-bg: #101820;
    --color-surface: #17222d;
    --color-surface-strong: #1f2d38;
    --color-text: #f4efe4;
    --color-muted: #c5cbd1;
    --color-primary: #66c7bb;
    --color-primary-strong: #99ded6;
    --color-accent: #ff9f6e;
    --color-border: #34424f;
    --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.34);
    --shadow-card: 0 12px 26px rgba(0, 0, 0, 0.28);
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    background: var(--color-bg);
    color: var(--color-text);
    font-family: var(--font-main);
    line-height: 1.6;
}

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

ul {
    margin: 0;
    padding: 0;
}

button,
a {
    -webkit-tap-highlight-color: transparent;
}

button:focus-visible,
a:focus-visible {
    outline: 3px solid var(--color-accent);
    outline-offset: 4px;
}

.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.section-wrap {
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
}

/* Header and responsive navigation */
.site-header {
    position: sticky;
    top: 0;
    z-index: 10;
    background: color-mix(in srgb, var(--color-bg) 90%, transparent);
    border-bottom: 1px solid var(--color-border);
    backdrop-filter: blur(16px);
}

.navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-md);
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
    padding: var(--space-md) 0;
}

.brand {
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0;
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.theme-toggle,
.nav-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 42px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-surface);
    color: var(--color-text);
    cursor: pointer;
    transition: transform var(--transition), border-color var(--transition), background var(--transition);
}

.theme-toggle {
    gap: 0.35rem;
    padding: 0 var(--space-sm);
    font-weight: 700;
}

.theme-toggle:hover,
.nav-toggle:hover {
    transform: translateY(-2px);
    border-color: var(--color-primary);
}

.nav-toggle {
    width: 42px;
    flex-direction: column;
    gap: 4px;
}

.nav-toggle-line {
    width: 18px;
    height: 2px;
    background: var(--color-text);
    border-radius: 999px;
}

.nav-links {
    display: none;
    flex-basis: 100%;
    list-style: none;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-sm);
    box-shadow: var(--shadow-card);
}

.nav-links.is-open {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.nav-links a {
    display: block;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    color: var(--color-muted);
    font-weight: 700;
    transition: color var(--transition), background var(--transition);
}

.nav-links a:hover {
    background: color-mix(in srgb, var(--color-primary) 12%, transparent);
    color: var(--color-primary-strong);
}

/* Hero section with load animation */
.hero {
    display: flex;
    flex-direction: column;
    gap: var(--space-xl);
    padding: var(--space-2xl) 0;
    animation: fadeSlideIn 700ms ease both;
}

.eyebrow {
    margin: 0 0 var(--space-sm);
    color: var(--color-accent);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

h1,
h2,
h3,
p {
    margin-top: 0;
}

h1 {
    max-width: 720px;
    margin-bottom: var(--space-md);
    font-size: clamp(2.4rem, 12vw, 4.25rem);
    line-height: 1;
    letter-spacing: 0;
}

h2 {
    margin-bottom: var(--space-md);
    font-size: clamp(1.8rem, 8vw, 2.7rem);
    line-height: 1.12;
}

h3 {
    margin-bottom: var(--space-xs);
    font-size: 1.2rem;
}

.hero-text {
    max-width: 620px;
    color: var(--color-muted);
    font-size: 1.08rem;
}

.hero-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--space-sm);
    margin-top: var(--space-lg);
}

.button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 46px;
    padding: 0.8rem 1.2rem;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    font-weight: 800;
    transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.button:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-card);
}

.button-primary {
    background: var(--color-primary);
    color: #ffffff;
}

.button-primary:hover {
    background: var(--color-primary-strong);
}

.button-secondary {
    background: var(--color-surface);
    border-color: var(--color-border);
    color: var(--color-text);
}

.product-mockup {
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    background: linear-gradient(145deg, var(--color-surface), var(--color-surface-strong));
    box-shadow: var(--shadow-soft);
}

.mockup-topbar {
    display: flex;
    gap: 0.4rem;
    margin-bottom: var(--space-md);
}

.mockup-topbar span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--color-accent);
}

.mockup-topbar span:nth-child(2) {
    background: var(--color-primary);
}

.mockup-topbar span:nth-child(3) {
    background: var(--color-border);
}

.mockup-session {
    padding: var(--space-lg);
    border-radius: var(--radius-md);
    background: var(--color-text);
    color: var(--color-bg);
}

.mockup-session p {
    margin-bottom: var(--space-xs);
    color: color-mix(in srgb, var(--color-bg) 78%, transparent);
}

.mockup-session strong {
    display: block;
    margin-bottom: var(--space-md);
    font-size: 3rem;
    line-height: 1;
}

.progress-bar {
    height: 10px;
    overflow: hidden;
    border-radius: 999px;
    background: color-mix(in srgb, var(--color-bg) 18%, transparent);
}

.progress-bar span {
    display: block;
    width: 72%;
    height: 100%;
    border-radius: inherit;
    background: var(--color-accent);
}

.mockup-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-sm);
    margin-top: var(--space-md);
}

.mockup-grid div {
    padding: var(--space-md);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface-strong);
}

.mockup-grid span {
    display: block;
    color: var(--color-muted);
    font-size: 0.85rem;
}

/* Shared section and card styling */
.features,
.pricing,
.reviews {
    padding: var(--space-2xl) 0;
}

.section-heading {
    max-width: 680px;
    margin-bottom: var(--space-xl);
}

.section-heading h2 {
    margin-bottom: 0;
}

.feature-grid,
.pricing-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-md);
}

.info-card,
.price-card,
.review-card {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    box-shadow: var(--shadow-card);
}

.info-card,
.price-card {
    padding: var(--space-lg);
    transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}

.info-card:hover,
.price-card:hover {
    transform: translateY(-6px);
    border-color: var(--color-primary);
    box-shadow: var(--shadow-soft);
}

.info-card p,
.price-card p,
.review-card p {
    color: var(--color-muted);
}

.card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    margin-bottom: var(--space-md);
    border-radius: var(--radius-sm);
    background: color-mix(in srgb, var(--color-primary) 14%, transparent);
    color: var(--color-primary-strong);
    font-weight: 800;
}

.price-card {
    display: flex;
    flex-direction: column;
}

.price {
    margin-bottom: var(--space-sm);
    color: var(--color-text) !important;
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1;
}

.price span {
    color: var(--color-muted);
    font-size: 1rem;
    font-weight: 700;
}

.price-card ul {
    display: grid;
    gap: var(--space-xs);
    margin: var(--space-md) 0 var(--space-lg);
    padding-left: 1.2rem;
    color: var(--color-muted);
}

.price-card .button {
    margin-top: auto;
}

.featured-card {
    border: 2px solid var(--color-primary);
}

.popular-label {
    display: inline-flex;
    align-self: flex-start;
    margin-bottom: var(--space-md);
    padding: 0.25rem 0.55rem;
    border-radius: 999px;
    background: color-mix(in srgb, var(--color-accent) 18%, transparent);
    color: var(--color-accent) !important;
    font-size: 0.76rem;
    font-weight: 800;
    text-transform: uppercase;
}

.review-list {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.review-card {
    padding: var(--space-lg);
}

.review-card h3 {
    margin-bottom: 0;
}

.review-card span {
    color: var(--color-muted);
    font-size: 0.92rem;
}

/* Footer */
.site-footer {
    border-top: 1px solid var(--color-border);
    background: var(--color-surface);
}

.footer-inner {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    width: min(1120px, calc(100% - 2rem));
    margin: 0 auto;
    padding: var(--space-lg) 0;
}

.footer-inner p {
    margin: 0;
    color: var(--color-muted);
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.footer-links a {
    color: var(--color-muted);
    font-weight: 700;
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-primary-strong);
}

@keyframes fadeSlideIn {
    from {
        opacity: 0;
        transform: translateY(18px);
    }

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

/* First breakpoint: larger phones and tablets */
@media (min-width: 640px) {
    .hero-buttons {
        flex-direction: row;
    }

    .mockup-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .feature-grid,
    .pricing-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .review-list,
    .footer-inner {
        flex-direction: row;
    }

    .footer-inner {
        align-items: center;
        justify-content: space-between;
    }
}

/* Second breakpoint: desktop navigation and wider layouts */
@media (min-width: 900px) {
    .navbar {
        flex-wrap: nowrap;
    }

    .nav-toggle {
        display: none;
    }

    .nav-links,
    .nav-links.is-open {
        display: flex;
        flex-basis: auto;
        flex-direction: row;
        align-items: center;
        gap: var(--space-xs);
        padding: 0;
        border: 0;
        background: transparent;
        box-shadow: none;
    }

    .hero {
        min-height: calc(100vh - 76px);
        align-items: center;
        justify-content: space-between;
        flex-direction: row;
        padding: var(--space-2xl) 0;
    }

    .hero-content {
        flex: 1 1 52%;
    }

    .product-mockup {
        flex: 0 1 420px;
    }

    .feature-grid,
    .pricing-grid {
        grid-template-columns: repeat(3, 1fr);
    }

    .review-card {
        flex: 1;
    }
}