/* =============================================
   Alkosprawdzacz — Landing Page Styles
   Design system matched to iOS app:
   Primary: #3373F2  Success: #33C773
   BG: #FAFAFC  Text: #121217 / #4D4D59 / #808088
   ============================================= */

/* === RESET & BASE === */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors — matched to VCColor in DesignSystem.swift */
    --primary: #3373F2;
    --primary-light: #6B9CFF;
    --primary-dark: #2259C9;
    --success: #33C773;
    --warning: #FABF2E;
    --danger: #F04545;
    --bg: #FAFAFC;
    --surface: #FFFFFF;
    --text-primary: #121217;
    --text-secondary: #4D4D59;
    --text-tertiary: #808088;
    --divider: #EBEBED;

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

    /* Spacing — matched to VCSpacing */
    --space-xxs: 4px;
    --space-xs: 8px;
    --space-sm: 12px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-xxl: 48px;
    --space-xxxl: 64px;

    /* Radii */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-pill: 100px;

    /* Container */
    --container: 1120px;
}

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

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

img, svg { display: block; }

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

ul { list-style: none; }

/* === CONTAINER === */
.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

@media (max-width: 640px) {
    .container { padding: 0 var(--space-md); }
}

/* === TYPOGRAPHY === */
h1 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h2 {
    font-size: clamp(1.75rem, 4vw, 2.75rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.015em;
    text-align: center;
    margin-bottom: var(--space-md);
}

h3 {
    font-size: clamp(1.1rem, 2.5vw, 1.35rem);
    font-weight: 700;
    line-height: 1.3;
}

h4 {
    font-size: 1.05rem;
    font-weight: 600;
    line-height: 1.4;
}

h5 {
    font-size: 0.8rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-tertiary);
    margin-bottom: var(--space-sm);
}

.section-lead {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.1rem;
    max-width: 580px;
    margin: 0 auto var(--space-xxl);
}

/* === BUTTONS === */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font);
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border-radius: var(--radius-md);
    white-space: nowrap;
}

.btn--primary {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 12px rgba(51, 115, 242, 0.3);
}
.btn--primary:hover {
    background: var(--primary-dark);
    box-shadow: 0 6px 20px rgba(51, 115, 242, 0.4);
    transform: translateY(-1px);
}

.btn--ghost {
    background: transparent;
    color: var(--primary);
    border: 1.5px solid var(--divider);
}
.btn--ghost:hover {
    border-color: var(--primary);
    background: rgba(51, 115, 242, 0.04);
}

.btn--lg {
    padding: 14px 32px;
    font-size: 1.05rem;
}

.btn--sm {
    padding: 8px 18px;
    font-size: 0.875rem;
    border-radius: var(--radius-sm);
}

/* === NAV === */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(250, 250, 252, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid transparent;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.nav--scrolled {
    border-bottom-color: var(--divider);
    box-shadow: 0 1px 8px rgba(0, 0, 0, 0.04);
}

.nav__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--text-primary);
}

.nav__logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-sm);
    background: var(--primary);
    color: white;
}
.nav__logo-icon svg { width: 20px; height: 20px; }

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

.nav__cta {
    display: none;
}

@media (min-width: 640px) {
    .nav__cta { display: inline-flex; }
}

/* Language Toggle */
.lang-toggle {
    display: flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--divider);
    background: var(--surface);
    cursor: pointer;
    font-family: var(--font);
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-secondary);
    transition: all 0.2s;
}
.lang-toggle:hover {
    border-color: var(--primary);
    color: var(--primary);
}

.lang-toggle__flag { font-size: 1.1rem; }

/* === HERO === */
.hero {
    padding: calc(64px + var(--space-xxxl)) 0 var(--space-xxxl);
    overflow: hidden;
}

.hero__inner {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xxl);
    align-items: center;
}

.hero__eyebrow {
    display: inline-block;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    background: rgba(51, 115, 242, 0.08);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    margin-bottom: var(--space-lg);
}

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

.hero__subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--space-xl);
    max-width: 480px;
}

.hero__ctas {
    display: flex;
    gap: var(--space-sm);
    flex-wrap: wrap;
    margin-bottom: var(--space-lg);
}

.hero__proof {
    font-size: 0.9rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

/* Phone Mockup */
.phone-mockup {
    width: 280px;
    margin: 0 auto;
    background: #1A1A2E;
    border-radius: 40px;
    padding: 12px;
    box-shadow:
        0 25px 60px rgba(0, 0, 0, 0.15),
        0 8px 20px rgba(0, 0, 0, 0.08),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
    position: relative;
}

.phone-mockup__notch {
    width: 120px;
    height: 28px;
    background: #1A1A2E;
    border-radius: 0 0 18px 18px;
    margin: 0 auto;
    position: relative;
    z-index: 2;
}

.phone-mockup__screen {
    background: var(--bg);
    border-radius: 30px;
    overflow: hidden;
    margin-top: -14px;
}

.phone-screen {
    padding: 40px 24px 32px;
    text-align: center;
    min-height: 420px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.phone-screen__icon {
    margin-bottom: 8px;
}

.phone-screen__title {
    font-size: 28px;
    font-weight: 800;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.phone-screen__subtitle {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.phone-screen__btn {
    background: var(--primary);
    color: white;
    padding: 12px 32px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    box-shadow: 0 4px 12px rgba(51, 115, 242, 0.3);
    margin-bottom: 20px;
}

.phone-screen__gauge {
    position: relative;
    width: 120px;
    height: 70px;
    margin: 0 auto;
}

.gauge-svg {
    width: 100%;
    height: 100%;
}

.gauge-label {
    position: absolute;
    bottom: 2px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 22px;
    font-weight: 700;
    color: var(--success);
}

.phone-screen__result {
    font-size: 14px;
    font-weight: 600;
    color: var(--success);
}

@media (max-width: 900px) {
    .hero__inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero__subtitle { max-width: 100%; margin-left: auto; margin-right: auto; }
    .hero__ctas { justify-content: center; }
    .hero__proof { text-align: center; }
    .hero__phone { order: -1; }
    .phone-mockup {
        width: 240px;
        border-radius: 34px;
    }
    .phone-mockup__notch { width: 100px; height: 24px; border-radius: 0 0 14px 14px; }
    .phone-mockup__screen { border-radius: 24px; }
    .phone-screen {
        padding: 32px 20px 24px;
        min-height: 360px;
    }
    .phone-screen__title { font-size: 24px; }
}

@media (max-width: 640px) {
    .hero { padding-top: calc(64px + var(--space-xl)); padding-bottom: var(--space-xl); }
    .hero__eyebrow { font-size: 0.78rem; }
    .hero__ctas {
        flex-direction: column;
        align-items: stretch;
    }
    .hero__ctas .btn { text-align: center; }
    .phone-mockup { width: 200px; border-radius: 28px; padding: 8px; }
    .phone-mockup__screen { border-radius: 22px; }
    .phone-screen {
        padding: 28px 14px 20px;
        min-height: 300px;
        gap: 4px;
    }
    .phone-screen__title { font-size: 20px; }
    .phone-screen__subtitle { font-size: 11px; }
    .phone-screen__btn { padding: 8px 20px; font-size: 12px; }
    .phone-screen__gauge { width: 90px; height: 55px; }
    .gauge-label { font-size: 16px; }
    .phone-screen__result { font-size: 12px; }
}

/* === PROBLEM SECTION === */
.problem {
    padding: var(--space-xxxl) 0;
    background: var(--surface);
}

.problem__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

.problem__card {
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
    background: var(--bg);
    border: 1px solid var(--divider);
    transition: transform 0.2s, box-shadow 0.2s;
}
.problem__card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.06);
}

.problem__icon {
    margin-bottom: var(--space-md);
}
.problem__icon svg { display: inline-block; }

.problem__card h3 {
    margin-bottom: var(--space-sm);
}

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

@media (max-width: 900px) {
    .problem__grid { grid-template-columns: 1fr; gap: var(--space-md); }
    .problem__card { padding: var(--space-lg); }
}

/* === GUIDE / SCIENCE === */
.guide {
    padding: var(--space-xxxl) 0;
    background: linear-gradient(180deg, var(--bg) 0%, #EEF2FF 100%);
}

.guide__inner {
    text-align: center;
    max-width: 720px;
    margin: 0 auto;
}

.guide__badge {
    display: inline-block;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--primary);
    background: rgba(51, 115, 242, 0.08);
    padding: 6px 16px;
    border-radius: var(--radius-pill);
    margin-bottom: var(--space-lg);
}

.guide__lead {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-top: var(--space-md);
    margin-bottom: var(--space-xxl);
}

.guide__stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-lg);
}

.stat {
    text-align: center;
}

.stat__number {
    display: block;
    font-size: clamp(2rem, 4vw, 2.75rem);
    font-weight: 800;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.stat__label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-tertiary);
    margin-top: var(--space-xxs);
}

@media (max-width: 640px) {
    .guide__stats {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-lg) var(--space-md);
    }
}

/* === PLAN / HOW IT WORKS === */
.plan {
    padding: var(--space-xxxl) 0;
    background: var(--surface);
}

.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    counter-reset: step;
}

.step {
    text-align: center;
    padding: var(--space-xl) var(--space-lg);
    position: relative;
}

.step__number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    color: white;
    font-weight: 700;
    font-size: 1.1rem;
    margin: 0 auto var(--space-lg);
}

.step__icon {
    color: var(--primary);
    margin-bottom: var(--space-md);
}
.step__icon svg { margin: 0 auto; }

.step h3 {
    margin-bottom: var(--space-sm);
}

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

@media (max-width: 900px) {
    .steps { grid-template-columns: 1fr; gap: var(--space-lg); }
    .step { padding: var(--space-lg) var(--space-md); }
}

/* === FEATURES === */
.features {
    padding: var(--space-xxxl) 0;
    background: var(--bg);
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-xxl);
}

.feature {
    padding: var(--space-xl);
    background: var(--surface);
    border-radius: var(--radius-lg);
    border: 1px solid var(--divider);
    transition: transform 0.2s, box-shadow 0.2s;
}
.feature:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.05);
}

.feature__icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-md);
}
.feature__icon--blue  { background: rgba(51, 115, 242, 0.1); color: var(--primary); }
.feature__icon--green { background: rgba(51, 199, 115, 0.1); color: var(--success); }
.feature__icon--purple { background: rgba(147, 51, 234, 0.1); color: #9333EA; }
.feature__icon--orange { background: rgba(250, 191, 46, 0.12); color: #D97706; }
.feature__icon--red   { background: rgba(240, 69, 69, 0.1); color: var(--danger); }
.feature__icon--teal  { background: rgba(20, 184, 166, 0.1); color: #0D9488; }

.feature h4 {
    margin-bottom: var(--space-xs);
}

.feature p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.6;
}

@media (max-width: 900px) {
    .features__grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 640px) {
    .features__grid { grid-template-columns: 1fr; gap: var(--space-md); }
    .feature { padding: var(--space-lg); }
}

/* === TRANSFORMATION === */
.transformation {
    padding: var(--space-xxxl) 0;
    background: var(--surface);
}

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

.transformation__grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-xl);
    margin-top: var(--space-xxl);
}

.transformation__before,
.transformation__after {
    padding: var(--space-xl);
    border-radius: var(--radius-lg);
}

.transformation__before {
    background: #FEF2F2;
    border: 1px solid #FECACA;
}

.transformation__after {
    background: #F0FDF4;
    border: 1px solid #BBF7D0;
}

.transformation__before h4 {
    color: var(--danger);
    margin-bottom: var(--space-md);
}

.transformation__after h4 {
    color: var(--success);
    margin-bottom: var(--space-md);
}

.transformation__before li,
.transformation__after li {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.6;
    padding: var(--space-xs) 0;
    padding-left: var(--space-lg);
    position: relative;
}

.transformation__before li::before {
    content: "\2717";
    position: absolute;
    left: 0;
    color: var(--danger);
    font-weight: 600;
}

.transformation__after li::before {
    content: "\2713";
    position: absolute;
    left: 0;
    color: var(--success);
    font-weight: 600;
}

@media (max-width: 640px) {
    .transformation__grid { grid-template-columns: 1fr; gap: var(--space-md); }
    .transformation__before, .transformation__after { padding: var(--space-lg); }
}

/* === DOWNLOAD / CTA === */
.download {
    padding: var(--space-xxxl) 0;
    background: linear-gradient(135deg, #1A1A2E 0%, #16213E 50%, #0F3460 100%);
    color: white;
}

.download__inner {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.download h2 {
    color: white;
}

.download__lead {
    color: rgba(255, 255, 255, 0.75);
    font-size: 1.1rem;
    line-height: 1.7;
    margin-bottom: var(--space-xl);
}

.download__buttons {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-lg);
}

.app-store-badge {
    display: inline-block;
    transition: transform 0.2s, box-shadow 0.2s;
}
.app-store-badge:hover {
    transform: translateY(-2px);
}

.app-store-badge__inner {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    background: white;
    color: var(--text-primary);
    padding: 12px 28px;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}
.app-store-badge__inner svg { fill: var(--text-primary); }

.app-store-badge__small {
    display: block;
    font-size: 0.7rem;
    color: var(--text-tertiary);
    line-height: 1;
}

.app-store-badge__big {
    display: block;
    font-size: 1.25rem;
    font-weight: 700;
    line-height: 1.2;
}

.download__note {
    color: rgba(255, 255, 255, 0.5);
    font-size: 0.85rem;
}

@media (max-width: 640px) {
    .download { padding: var(--space-xxl) 0; }
    .download__lead { font-size: 1rem; }
    .app-store-badge__inner { padding: 10px 20px; }
}

/* === STAKES / DISCLAIMER === */
.stakes {
    padding: var(--space-xxl) 0;
    background: #FFF7ED;
    border-top: 1px solid #FDE8CD;
    border-bottom: 1px solid #FDE8CD;
}

.stakes__inner {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
}

.stakes__icon {
    margin: 0 auto var(--space-md);
    display: flex;
    justify-content: center;
}
.stakes__icon svg { display: inline-block; }

.stakes h3 {
    color: var(--danger);
    margin-bottom: var(--space-md);
}

.stakes p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* === FOOTER === */
.footer {
    padding: var(--space-xxl) 0 var(--space-xl);
    background: #0F0F14;
    color: rgba(255, 255, 255, 0.6);
}

.footer__inner {
    display: grid;
    grid-template-columns: 1.5fr repeat(3, 1fr);
    gap: var(--space-xxl) var(--space-xl);
}

.footer__logo {
    font-size: 1.3rem;
    font-weight: 700;
    color: white;
    margin-bottom: var(--space-sm);
}

.footer__brand p {
    font-size: 0.9rem;
    line-height: 1.5;
    max-width: 280px;
}

.footer__links {
    display: contents;
}

.footer__col h5 {
    color: rgba(255, 255, 255, 0.4);
    margin-bottom: var(--space-md);
}

.footer__col a {
    display: block;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
    padding: var(--space-xs) 0;
    transition: color 0.2s;
}
.footer__col a:hover { color: white; }

.footer__bottom {
    grid-column: 1 / -1;
    border-top: 1px solid rgba(255, 255, 255, 0.08);
    padding-top: var(--space-lg);
    margin-top: var(--space-sm);
    font-size: 0.8rem;
}

.footer__research {
    margin-top: var(--space-xs);
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.3);
}

@media (max-width: 900px) {
    .footer__inner {
        grid-template-columns: 1fr 1fr;
        gap: var(--space-xl) var(--space-lg);
    }
    .footer__brand { grid-column: 1 / -1; }
    .footer__bottom { grid-column: 1 / -1; }
}

@media (max-width: 640px) {
    .footer__inner {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
    }
    .footer__col { margin-bottom: var(--space-xs); }
}

/* === ANIMATIONS === */
@media (prefers-reduced-motion: no-preference) {
    .fade-up {
        opacity: 0;
        transform: translateY(24px);
        transition: opacity 0.6s ease, transform 0.6s ease;
    }
    .fade-up.visible {
        opacity: 1;
        transform: translateY(0);
    }
}

/* For users who prefer reduced motion */
@media (prefers-reduced-motion: reduce) {
    * { transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
    html { scroll-behavior: auto; }
}