/* ==========================================================================
   Poravno - Landing Page & Shared Styles
   ========================================================================== */

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

:root {
    --color-primary: #006D6F;
    --color-primary-light: #008C8E;
    --color-primary-dark: #005052;
    --color-primary-bg: #E0F5F5;
    --color-accent: #00897B;
    --color-text: #1a2332;
    --color-text-light: #5a6a7a;
    --color-bg: #ffffff;
    --color-bg-subtle: #f6f9fb;
    --color-bg-alt: #eef3f7;
    --color-border: #dce4ec;
    --color-danger: #dc2626;
    --color-danger-dark: #b91c1c;
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --container-landing: 1100px;
    --container-content: 800px;
    --radius-sm: 0.5rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.25rem;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --transition: 0.2s ease;
}

/* Dark mode */
@media (prefers-color-scheme: dark) {
    :root {
        --color-primary: #4DB6AC;
        --color-primary-light: #80CBC4;
        --color-primary-dark: #00897B;
        --color-primary-bg: #0a2424;
        --color-accent: #80CBC4;
        --color-text: #e2e8f0;
        --color-text-light: #94a3b8;
        --color-bg: #0f172a;
        --color-bg-subtle: #1e293b;
        --color-bg-alt: #162033;
        --color-border: #334155;
        --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
        --shadow-md: 0 4px 12px rgba(0,0,0,0.4);
        --shadow-lg: 0 8px 30px rgba(0,0,0,0.5);
    }
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background: var(--color-bg);
    line-height: 1.65;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Skip to content (a11y) */
.skip-link {
    position: absolute;
    top: -100%;
    left: 1rem;
    z-index: 100;
    padding: 0.75rem 1.5rem;
    background: var(--color-primary);
    color: #fff;
    border-radius: var(--radius-sm);
    text-decoration: none;
    font-weight: 600;
}

.skip-link:focus {
    top: 1rem;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
    max-width: var(--container-landing);
    margin: 0 auto;
    padding: 0 1.5rem;
}

.container--narrow {
    max-width: var(--container-content);
}

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: 0.875rem 0;
    backdrop-filter: blur(8px);
    background: rgba(255,255,255,0.92);
}

@media (prefers-color-scheme: dark) {
    .site-header {
        background: rgba(15,23,42,0.92);
    }
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    letter-spacing: -0.01em;
}

.logo img {
    border-radius: 8px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.75rem;
    list-style: none;
}

.nav-links a {
    color: var(--color-text-light);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a:focus-visible {
    color: var(--color-primary);
}

/* Mobile nav toggle */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    color: var(--color-text);
}

.nav-toggle svg {
    width: 24px;
    height: 24px;
}

@media (max-width: 640px) {
    .nav-toggle {
        display: block;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        background: var(--color-bg);
        border-bottom: 1px solid var(--color-border);
        padding: 1rem 1.5rem;
        gap: 0.75rem;
        box-shadow: var(--shadow-md);
    }

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

    .nav-links a {
        font-size: 1rem;
        padding: 0.5rem 0;
    }
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
    padding: 5rem 1.5rem 4rem;
    text-align: center;
}

.hero h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 1rem;
    letter-spacing: -0.02em;
    color: var(--color-text);
}

.hero h1 em {
    color: var(--color-primary);
    font-style: normal;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-text-light);
    max-width: 560px;
    margin: 0 auto 2rem;
    line-height: 1.6;
}

.hero-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.play-badge {
    transition: transform var(--transition), opacity var(--transition);
}

.play-badge:hover {
    transform: scale(1.05);
    opacity: 0.9;
}

.play-badge img {
    height: 64px;
    width: auto;
    margin: -10px 0;
}

.hero-screenshots {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    max-width: 740px;
    margin: 0 auto;
}

.phone-frame {
    flex: 0 1 220px;
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease;
}

.phone-frame:hover {
    transform: translateY(-4px);
}

.phone-frame img {
    width: 100%;
    height: auto;
    display: block;
}

@media (max-width: 640px) {
    .hero {
        padding: 3rem 1.5rem 2.5rem;
    }

    .hero-screenshots {
        gap: 0.75rem;
    }

    .phone-frame {
        flex: 0 1 150px;
    }

    .play-badge img {
        height: 48px;
    }
}

/* ==========================================================================
   Sections (shared)
   ========================================================================== */

.section {
    padding: 4.5rem 1.5rem;
}

.section--alt {
    background: var(--color-bg-subtle);
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
    letter-spacing: -0.01em;
}

.section-header p {
    font-size: 1.05rem;
    color: var(--color-text-light);
    max-width: 540px;
    margin: 0 auto;
}

@media (max-width: 640px) {
    .section {
        padding: 3rem 1.5rem;
    }
}

/* ==========================================================================
   Features Grid
   ========================================================================== */

.features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    max-width: 900px;
    margin: 0 auto;
}

.feature-card {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 1.75rem;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--color-primary-bg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

.feature-card h3 {
    font-size: 1.1rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.feature-card p {
    font-size: 0.95rem;
    color: var(--color-text-light);
    line-height: 1.55;
}

@media (max-width: 640px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

/* ==========================================================================
   Screenshots Section
   ========================================================================== */

.screenshots-scroll {
    display: flex;
    gap: 1.25rem;
    overflow-x: auto;
    padding: 0.5rem 0 1.5rem;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: thin;
    scrollbar-color: var(--color-border) transparent;
    max-width: 1000px;
    margin: 0 auto;
    justify-content: center;
}

.screenshots-scroll::-webkit-scrollbar {
    height: 6px;
}

.screenshots-scroll::-webkit-scrollbar-track {
    background: transparent;
}

.screenshots-scroll::-webkit-scrollbar-thumb {
    background: var(--color-border);
    border-radius: 3px;
}

.screenshot-item {
    flex: 0 0 auto;
    scroll-snap-align: center;
    text-align: center;
}

.screenshot-item .phone-frame {
    flex: none;
    width: 200px;
    margin-bottom: 0.75rem;
}

.screenshot-caption {
    font-size: 0.85rem;
    color: var(--color-text-light);
    font-weight: 500;
}

@media (max-width: 800px) {
    .screenshots-scroll {
        justify-content: flex-start;
        padding-left: 1.5rem;
        padding-right: 1.5rem;
    }

    .screenshot-item .phone-frame {
        width: 170px;
    }
}

/* ==========================================================================
   Final CTA
   ========================================================================== */

.cta-section {
    padding: 4rem 1.5rem;
    text-align: center;
    background: var(--color-primary-bg);
}

.cta-section h2 {
    font-size: clamp(1.4rem, 3vw, 1.75rem);
    font-weight: 700;
    margin-bottom: 0.75rem;
}

.cta-section p {
    font-size: 1rem;
    color: var(--color-text-light);
    margin-bottom: 1.5rem;
}

/* ==========================================================================
   CTA Buttons
   ========================================================================== */

.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 44px;
    padding: 0 2rem;
    background: var(--color-primary);
    color: #fff;
    font-family: var(--font-sans);
    font-size: 1.05rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    background: var(--color-primary-light);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Nav CTA button */
.nav-cta {
    background: var(--color-primary) !important;
    color: #fff !important;
    padding: 0.45rem 1.1rem;
    border-radius: var(--radius-sm);
    font-weight: 600 !important;
    transition: background var(--transition) !important;
}

.nav-cta:hover {
    background: var(--color-primary-light) !important;
    color: #fff !important;
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
    margin-top: auto;
    border-top: 1px solid var(--color-border);
    padding: 2rem 0;
    text-align: center;
    color: var(--color-text-light);
    font-size: 0.875rem;
}

.footer-links {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--color-text-light);
    text-decoration: none;
    transition: color var(--transition);
}

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

.footer-sep {
    margin: 0 0.35rem;
    opacity: 0.5;
}

/* ==========================================================================
   Content Pages (Privacy, Delete Account, 404)
   ========================================================================== */

.page {
    flex: 1;
    padding: 3rem 1.5rem;
}

.page h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.page .subtitle {
    color: var(--color-text-light);
    margin-bottom: 2rem;
}

/* Privacy / legal pages */
.privacy h2 {
    font-size: 1.35rem;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
}

.privacy h3 {
    font-size: 1.1rem;
    margin-top: 1.5rem;
    margin-bottom: 0.5rem;
}

.privacy p,
.privacy ul,
.privacy table {
    margin-bottom: 1rem;
}

.privacy ul {
    padding-left: 1.5rem;
}

.privacy li {
    margin-bottom: 0.35rem;
}

.privacy a {
    color: var(--color-primary);
}

.privacy table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9rem;
}

.privacy th,
.privacy td {
    text-align: left;
    padding: 0.6rem 0.75rem;
    border: 1px solid var(--color-border);
}

.privacy th {
    background: var(--color-bg-subtle);
    font-weight: 600;
}

/* Cards (used on delete-account page) */
.card {
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 2rem;
    margin-bottom: 2rem;
}

.card h2 {
    font-size: 1.25rem;
    margin-bottom: 1rem;
}

.card ul {
    padding-left: 1.25rem;
}

.card li {
    margin-bottom: 0.5rem;
}

.steps {
    counter-reset: step;
    list-style: none;
    padding-left: 0;
}

.steps li {
    counter-increment: step;
    padding-left: 2.5rem;
    position: relative;
    margin-bottom: 1rem;
}

.steps li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    width: 1.75rem;
    height: 1.75rem;
    background: var(--color-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.875rem;
    font-weight: 600;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: background var(--transition);
}

.btn-danger {
    background: var(--color-danger);
    color: white;
}

.btn-danger:hover {
    background: var(--color-danger-dark);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

#google-signin-btn {
    margin-bottom: 1.5rem;
}

/* Status messages */
.status {
    padding: 1rem;
    border-radius: var(--radius-sm);
    margin-top: 1rem;
    display: none;
}

.status.error {
    background: #fef2f2;
    color: var(--color-danger);
    border: 1px solid #fecaca;
    display: block;
}

.status.success {
    background: #f0fdf4;
    color: #15803d;
    border: 1px solid #bbf7d0;
    display: block;
}

.signed-in-as {
    padding: 1rem;
    background: var(--color-bg-subtle);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    margin-bottom: 1.5rem;
    display: none;
}

.signed-in-as.visible {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.signed-in-as img {
    width: 2rem;
    height: 2rem;
    border-radius: 50%;
}

/* ==========================================================================
   Scroll Animations
   ========================================================================== */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
    .fade-in {
        opacity: 1;
        transform: none;
        transition: none;
    }

    .phone-frame,
    .feature-card,
    .play-badge {
        transition: none;
    }
}