/* ============================================================
   Gym Companion Coach — Shared Styles
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
    /* Brand Colors */
    --bg-primary: #121114;
    --bg-secondary: #1C1C24;
    --bg-card: #242430;
    --surface-primary: #2C2C38;
    --surface-border: rgba(255, 255, 255, 0.08);

    --accent-blue: #3D8FFF;
    --accent-green: #33C75A;
    --accent-purple: #B063FF;
    --accent-yellow: #FFC226;

    --gradient-cta: linear-gradient(135deg, #33C75A, #3D8FFF);

    --text-primary: #FFFFFF;
    --text-secondary: rgba(255, 255, 255, 0.6);
    --text-tertiary: rgba(255, 255, 255, 0.35);

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;

    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 12px;
    --space-base: 16px;
    --space-lg: 20px;
    --space-xl: 24px;
    --space-2xl: 32px;
    --space-3xl: 48px;
    --space-section: 80px;

    /* Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-full: 9999px;

    /* Layout */
    --max-width: 1120px;
    --nav-height: 64px;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: var(--nav-height);
}

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--accent-blue);
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* --- Typography --- */
h1 {
    font-size: 2.5rem;
    font-weight: 800;
    line-height: 1.15;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2rem;
    font-weight: 800;
    line-height: 1.2;
    letter-spacing: -0.01em;
}

h3 {
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.3;
}

p {
    color: var(--text-secondary);
    font-size: 1.05rem;
    line-height: 1.7;
}

/* --- Layout --- */
.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--space-xl);
}

.section {
    padding: var(--space-section) 0;
}

.section-title {
    text-align: center;
    margin-bottom: var(--space-sm);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.05rem;
    margin-bottom: var(--space-3xl);
}

/* --- Navigation --- */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(18, 17, 20, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--surface-border);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
}

.nav-brand {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    text-decoration: none;
    color: var(--text-primary);
}

.nav-brand:hover {
    text-decoration: none;
}

.nav-brand img {
    border-radius: var(--radius-sm);
    scale: 0.5;
}

.nav-brand span {
    font-size: 1.2rem;
    font-weight: 600;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--accent-green);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: var(--space-2xl);
    list-style: none;
}

.nav-links a {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--text-primary);
    text-decoration: none;
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--space-sm);
}

/* --- Hero --- */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding-top: var(--nav-height);
    background: linear-gradient(to bottom, rgba(18, 17, 20, 0.4) 0%, rgba(18, 17, 20, 0.6) 60%, var(--bg-primary) 100%),
                var(--hero-bg, none) center/cover no-repeat,
                var(--bg-primary);
}

.hero-content {
    max-width: 640px;
    margin: 0 auto;
}

.hero-label {
    font-size: 0.8rem;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--accent-green);
    font-weight: 600;
    margin-bottom: var(--space-lg);
}

.hero h1 {
    margin-bottom: var(--space-lg);
}

.hero p {
    font-size: 1.15rem;
    margin-bottom: var(--space-2xl);
    max-width: 480px;
    margin-left: auto;
    margin-right: auto;
}

.hero-badge {
    display: inline-block;
    padding: 14px 36px;
    background: var(--gradient-cta);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: var(--space-3xl);
}

.hero-phones {
    display: flex;
    align-items: flex-end;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-2xl);
}

.hero-phone {
    width: 180px;
    aspect-ratio: 1206 / 2622;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 2px solid var(--surface-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 0.8rem;
    overflow: hidden;
}

.hero-phone img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.hero-phone--center {
    width: 200px;
    border-color: rgba(51, 199, 90, 0.3);
    box-shadow: 0 0 40px rgba(51, 199, 90, 0.12);
}

.hero-phone--left {
    transform: rotate(-5deg);
}

.hero-phone--right {
    transform: rotate(5deg);
}

/* --- Feature Cards --- */
.features-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
}

.feature-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-2xl);
    border: 1px solid var(--surface-border);
    transition: border-color 0.2s, transform 0.2s;
}

.feature-card:hover {
    transform: translateY(-2px);
}

.feature-card--blue { border-color: rgba(61, 143, 255, 0.25); }
.feature-card--blue:hover { border-color: rgba(61, 143, 255, 0.5); }
.feature-card--green { border-color: rgba(51, 199, 90, 0.25); }
.feature-card--green:hover { border-color: rgba(51, 199, 90, 0.5); }
.feature-card--purple { border-color: rgba(176, 99, 255, 0.25); }
.feature-card--purple:hover { border-color: rgba(176, 99, 255, 0.5); }
.feature-card--yellow { border-color: rgba(255, 194, 38, 0.25); }
.feature-card--yellow:hover { border-color: rgba(255, 194, 38, 0.5); }

.feature-card__icon {
    font-size: 2rem;
    margin-bottom: var(--space-md);
}

.feature-card__title {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.feature-card--blue .feature-card__title { color: var(--accent-blue); }
.feature-card--green .feature-card__title { color: var(--accent-green); }
.feature-card--purple .feature-card__title { color: var(--accent-purple); }
.feature-card--yellow .feature-card__title { color: var(--accent-yellow); }

.feature-card__desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* --- How It Works --- */
.how-it-works {
    background: var(--bg-secondary);
}

.steps {
    display: flex;
    gap: var(--space-2xl);
    justify-content: center;
}

.step {
    flex: 1;
    max-width: 280px;
    text-align: center;
}

.step__number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gradient-cta);
    margin: 0 auto var(--space-base);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1.15rem;
    color: var(--text-primary);
}

.step__title {
    font-weight: 700;
    margin-bottom: var(--space-sm);
}

.step__desc {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Screenshot Gallery --- */
.screenshots-scroll {
    display: flex;
    gap: var(--space-lg);
    overflow-x: auto;
    padding: var(--space-base) 0 var(--space-xl);
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.screenshots-scroll::-webkit-scrollbar {
    display: none;
}

.screenshot-frame {
    flex-shrink: 0;
    width: 220px;
    aspect-ratio: 1206 / 2622;
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    border: 2px solid var(--surface-border);
    scroll-snap-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 0.85rem;
    overflow: hidden;
}

.screenshot-frame img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* --- CTA --- */
.cta {
    text-align: center;
    padding: var(--space-section) 0;
}

.cta h2 {
    margin-bottom: var(--space-md);
}

.cta p {
    margin-bottom: var(--space-2xl);
}

.cta-badge {
    display: inline-block;
    padding: 14px 36px;
    background: var(--gradient-cta);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-weight: 700;
    font-size: 1rem;
}

/* --- Footer --- */
.footer {
    border-top: 1px solid var(--surface-border);
    padding: 0;
    overflow: visible;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    min-height: 60px;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.footer-copy {
    color: var(--text-tertiary);
    font-size: 0.85rem;
}

.footer-right {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
}

.footer-logo img {
    display: block;
    margin-top: -75px;
    scale: 0.8;
    transform-origin: bottom right;
}

.footer-links {
    display: flex;
    gap: var(--space-xl);
    list-style: none;
}

.footer-links a {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    text-decoration: none;
    transition: color 0.2s;
}

.footer-links a:hover {
    color: var(--text-secondary);
}

/* --- Support Page --- */
.page-header {
    text-align: center;
    padding-top: calc(var(--nav-height) + var(--space-3xl));
    padding-bottom: var(--space-3xl);
}

.page-header h1 {
    margin-bottom: var(--space-sm);
}

.page-header p {
    font-size: 1.1rem;
}

.guide-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-bottom: var(--space-section);
}

.guide-card {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-2xl) var(--space-lg);
    text-align: center;
    border: 1px solid var(--surface-border);
    text-decoration: none;
    transition: border-color 0.2s, transform 0.2s;
    display: block;
}

.guide-card:hover {
    transform: translateY(-2px);
    text-decoration: none;
}

.guide-card--blue { border-color: rgba(61, 143, 255, 0.25); }
.guide-card--blue:hover { border-color: rgba(61, 143, 255, 0.5); }
.guide-card--green { border-color: rgba(51, 199, 90, 0.25); }
.guide-card--green:hover { border-color: rgba(51, 199, 90, 0.5); }
.guide-card--purple { border-color: rgba(176, 99, 255, 0.25); }
.guide-card--purple:hover { border-color: rgba(176, 99, 255, 0.5); }

.guide-card__icon {
    font-size: 2.2rem;
    margin-bottom: var(--space-md);
}

.guide-card__title {
    font-weight: 700;
    font-size: 1.05rem;
    margin-bottom: var(--space-sm);
    color: var(--text-primary);
}

.guide-card--blue .guide-card__title { color: var(--accent-blue); }
.guide-card--green .guide-card__title { color: var(--accent-green); }
.guide-card--purple .guide-card__title { color: var(--accent-purple); }

.guide-card__desc {
    color: var(--text-tertiary);
    font-size: 0.9rem;
}

.guide-card__link {
    display: block;
    margin-top: var(--space-md);
    font-size: 0.9rem;
    font-weight: 600;
}

.guide-card--blue .guide-card__link { color: var(--accent-blue); }
.guide-card--green .guide-card__link { color: var(--accent-green); }
.guide-card--purple .guide-card__link { color: var(--accent-purple); }

/* --- FAQ Accordion --- */
.faq-section {
    border-top: 1px solid var(--surface-border);
    padding-top: var(--space-3xl);
}

.faq-section h2 {
    margin-bottom: var(--space-2xl);
}

.faq-category {
    margin-bottom: var(--space-2xl);
}

.faq-category__title {
    font-size: 0.75rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: var(--space-md);
}

.faq-category--green .faq-category__title { color: var(--accent-green); }
.faq-category--blue .faq-category__title { color: var(--accent-blue); }
.faq-category--yellow .faq-category__title { color: var(--accent-yellow); }

.faq-item {
    background: var(--bg-secondary);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-sm);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 0.95rem;
    font-weight: 600;
    padding: var(--space-base) var(--space-lg);
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-family: var(--font-family);
    transition: background 0.2s;
}

.faq-question:hover {
    background: rgba(255, 255, 255, 0.03);
}

.faq-question::after {
    content: '▸';
    color: var(--text-tertiary);
    font-size: 1rem;
    transition: transform 0.2s;
    flex-shrink: 0;
    margin-left: var(--space-base);
}

.faq-item.active .faq-question::after {
    transform: rotate(90deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-answer__inner {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* --- Guide Pages --- */
.guide-back {
    display: inline-block;
    color: var(--accent-blue);
    font-size: 0.9rem;
    margin-bottom: var(--space-lg);
    text-decoration: none;
}

.guide-back:hover {
    text-decoration: underline;
}

.guide-header {
    padding-top: calc(var(--nav-height) + var(--space-2xl));
    padding-bottom: var(--space-2xl);
}

.guide-header h1 {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
}

.guide-header p {
    font-size: 1rem;
}

.guide-toc {
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    margin-bottom: var(--space-3xl);
}

.guide-toc__label {
    color: var(--text-secondary);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: var(--space-md);
}

.guide-toc ol {
    list-style: none;
    counter-reset: toc;
}

.guide-toc li {
    counter-increment: toc;
    margin-bottom: var(--space-sm);
}

.guide-toc li::before {
    content: counter(toc) ". ";
    color: var(--accent-blue);
    font-weight: 600;
}

.guide-toc a {
    color: var(--accent-blue);
    font-size: 0.95rem;
}

.guide-content h2 {
    font-size: 1.4rem;
    margin-top: var(--space-3xl);
    margin-bottom: var(--space-base);
    padding-top: var(--space-base);
}

.guide-content p {
    margin-bottom: var(--space-base);
}

.guide-content ul, .guide-content ol {
    margin-bottom: var(--space-base);
    padding-left: var(--space-xl);
}

.guide-content li {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.7;
    margin-bottom: var(--space-sm);
}

/* --- Legal Pages (Privacy/Terms) --- */
.legal-page {
    padding-top: calc(var(--nav-height) + var(--space-3xl));
    padding-bottom: var(--space-section);
    max-width: 800px;
    margin: 0 auto;
}

.legal-page h1 {
    font-size: 1.8rem;
    margin-bottom: var(--space-xs);
}

.legal-page .last-updated {
    color: var(--text-tertiary);
    font-size: 0.9rem;
    margin-bottom: var(--space-2xl);
}

.legal-page h2 {
    font-size: 1.25rem;
    margin-top: var(--space-2xl);
    margin-bottom: var(--space-md);
}

.legal-page p, .legal-page li {
    font-size: 1rem;
    line-height: 1.7;
    color: var(--text-secondary);
}

.legal-page ul, .legal-page ol {
    padding-left: var(--space-xl);
    margin-bottom: var(--space-base);
}

.legal-page li {
    margin-bottom: var(--space-sm);
}

.legal-page a {
    color: var(--accent-blue);
}

/* --- Contact Section --- */
.contact-section {
    text-align: center;
    padding: var(--space-3xl) 0;
    border-top: 1px solid var(--surface-border);
    margin-top: var(--space-3xl);
}

.contact-section p {
    color: var(--text-secondary);
}

.contact-section a {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    font-size: 1.05rem;
    margin-top: var(--space-sm);
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 1024px) {
    .guide-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--nav-height);
        left: 0;
        right: 0;
        background: var(--bg-primary);
        border-bottom: 1px solid var(--surface-border);
        flex-direction: column;
        padding: var(--space-lg);
        gap: var(--space-lg);
    }

    .nav-links.active {
        display: flex;
    }

    .nav-toggle {
        display: block;
    }

    .nav-brand img {
        width: 60px;
        scale: 1;
    }

    .nav-brand span {
        font-size: 0.75rem;
    }

    .hero {
        min-height: auto;
        padding-top: calc(var(--nav-height) + var(--space-2xl));
        padding-bottom: var(--space-3xl);
    }

    .hero-label {
        font-size: 0.7rem;
        margin-bottom: var(--space-md);
    }

    .hero h1 {
        font-size: 1.5rem;
        margin-bottom: var(--space-md);
    }

    .hero p {
        font-size: 0.95rem;
        margin-bottom: var(--space-lg);
    }

    .hero-badge {
        padding: 12px 28px;
        font-size: 0.9rem;
        margin-bottom: var(--space-xl);
    }

    .hero-phones {
        gap: var(--space-sm);
        margin-top: var(--space-base);
    }

    .hero-phone {
        width: 90px;
        border-radius: var(--radius-md);
    }

    .hero-phone--center {
        width: 110px;
    }

    .hero-phone--left {
        transform: rotate(-3deg);
    }

    .hero-phone--right {
        transform: rotate(3deg);
    }

    .features-grid {
        grid-template-columns: 1fr;
    }

    .steps {
        flex-direction: column;
        align-items: center;
    }

    .guide-cards {
        grid-template-columns: 1fr;
    }

    .footer .container {
        position: relative;
        flex-direction: column;
        gap: 0;
        text-align: center;
        align-items: start;
    }

    .footer-right {
        flex-direction: column;
        gap: var(--space-base);
        order: -1;
    }

    .footer-left {
        flex-direction: column;
        gap: 8px;
        margin-top: 10px;
        margin-bottom: 20px;
    }

    .footer-copy {
        margin-top: 10px;
    }

    .footer-logo {
        position: absolute;
        right: 15px;
        bottom: 5px;
        pointer-events: none;
    }

    .footer-logo img {
        scale: 0.5;
        transform-origin: bottom right;
    }

    .footer-links {
        flex-wrap: wrap;
        justify-content: center;
        gap: 12px;
    }

    .screenshot-frame {
        width: 180px;
    }
}

/* --- Comparison Table --- */

.comparison-table {
    max-width: 640px;
    margin: 0 auto;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--bg-card);
    border: 1px solid var(--surface-border);
}

.comparison-table__header {
    display: grid;
    grid-template-columns: 1fr 80px 80px;
    padding: var(--space-base) var(--space-lg);
    background: var(--surface-primary);
    font-weight: 600;
    font-size: 14px;
    color: var(--text-secondary);
}

.comparison-table__plan-col {
    text-align: center;
}

.comparison-table__plan-col--premium {
    color: var(--accent-yellow);
}

.comparison-table__group {
    padding: var(--space-sm) var(--space-lg);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-tertiary);
    background: var(--bg-secondary);
}

.comparison-table__row {
    display: grid;
    grid-template-columns: 1fr 80px 80px;
    padding: var(--space-md) var(--space-lg);
    border-top: 1px solid var(--surface-border);
    font-size: 14px;
}

.comparison-table__feature {
    color: var(--text-primary);
}

.comparison-table__check {
    text-align: center;
    color: var(--accent-green);
    font-weight: 600;
    font-size: 14px;
}

.comparison-table__check--no {
    color: var(--text-tertiary);
}

@media (max-width: 480px) {
    .comparison-table__header,
    .comparison-table__row {
        grid-template-columns: 1fr 64px 64px;
        padding-left: var(--space-base);
        padding-right: var(--space-base);
    }

    .comparison-table__group {
        padding-left: var(--space-base);
        padding-right: var(--space-base);
    }

    .comparison-table__feature {
        font-size: 13px;
    }
}