/* Copy That — Landingpage Stylesheet
   Brand colors taken from logo. No external dependencies. */

:root {
    --color-primary: #14315E;
    --color-primary-dark: #0F2547;
    --color-accent: #2BAAE2;
    --color-accent-dark: #1F8FC4;
    --color-donate: #F59E0B;
    --color-donate-dark: #D97706;
    --color-success: #10B981;
    --color-bg: #FFFFFF;
    --color-bg-alt: #F8FAFC;
    --color-text: #0F172A;
    --color-text-muted: #475569;
    --color-border: #E2E8F0;

    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;

    --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
    --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.12);

    --content-width: 1200px;
    --section-spacing: 80px;

    --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
        "Helvetica Neue", Arial, sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

body {
    font-family: var(--font-stack);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

a {
    color: var(--color-accent-dark);
    text-decoration: none;
    transition: color 0.2s ease;
}

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

ul {
    list-style: none;
}

/* Layout helpers */
.container {
    max-width: var(--content-width);
    margin: 0 auto;
    padding: 0 24px;
}

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

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

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 56px;
}

.section-header h2 {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    color: var(--color-primary);
    margin-bottom: 16px;
    line-height: 1.2;
}

.section-header p {
    color: var(--color-text-muted);
    font-size: 1.125rem;
}

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: saturate(180%) blur(10px);
    -webkit-backdrop-filter: saturate(180%) blur(10px);
    border-bottom: 1px solid var(--color-border);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo img {
    height: 40px;
    width: auto;
}

.logo-text {
    font-weight: 700;
    color: var(--color-primary);
    font-size: 1.125rem;
    letter-spacing: 0.02em;
}

.nav {
    display: flex;
    align-items: center;
    gap: 32px;
}

.nav a {
    color: var(--color-text);
    font-weight: 500;
    font-size: 0.95rem;
}

.nav a:hover {
    color: var(--color-accent-dark);
}

.nav-cta {
    background-color: var(--color-donate);
    color: #FFFFFF !important;
    padding: 10px 20px;
    border-radius: var(--radius-md);
    transition: background-color 0.2s ease, transform 0.1s ease;
}

.nav-cta:hover {
    background-color: var(--color-donate-dark);
    color: #FFFFFF !important;
    transform: translateY(-1px);
}

.nav-toggle {
    display: none;
    background: none;
    border: 0;
    cursor: pointer;
    padding: 8px;
    color: var(--color-primary);
}

.nav-toggle svg {
    width: 28px;
    height: 28px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 28px;
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    border: 0;
    cursor: pointer;
    transition: background-color 0.2s ease, transform 0.1s ease, box-shadow 0.2s ease;
    line-height: 1;
}

.btn-primary {
    background-color: var(--color-accent);
    color: #FFFFFF;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    background-color: var(--color-accent-dark);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-donate {
    background-color: var(--color-donate);
    color: #FFFFFF;
    box-shadow: var(--shadow-md);
}

.btn-donate:hover {
    background-color: var(--color-donate-dark);
    color: #FFFFFF;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-ghost {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-ghost:hover {
    background-color: var(--color-primary);
    color: #FFFFFF;
}

.btn-lg {
    padding: 18px 36px;
    font-size: 1.0625rem;
}

/* Hero */
.hero {
    padding: 80px 0 100px;
    background: linear-gradient(180deg, #F8FAFC 0%, #FFFFFF 100%);
    overflow: hidden;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 64px;
    align-items: center;
}

.hero-content h1 {
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    line-height: 1.1;
    color: var(--color-primary);
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}

.hero-content h1 .accent {
    color: var(--color-accent);
}

.hero-subline {
    font-size: 1.1875rem;
    color: var(--color-text-muted);
    margin-bottom: 32px;
    max-width: 520px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.hero-meta {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    display: flex;
    align-items: center;
    gap: 8px;
}

.hero-meta .check {
    color: var(--color-success);
    font-weight: 700;
}

.hero-visual {
    position: relative;
}

.hero-visual .screenshot-frame {
    background-color: #FFFFFF;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    border: 1px solid var(--color-border);
    aspect-ratio: 16 / 10;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.hero-visual .screenshot-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #14315E 0%, #2BAAE2 100%);
    color: #FFFFFF;
    text-align: center;
    padding: 40px;
    gap: 16px;
}

.hero-visual .screenshot-placeholder svg {
    width: 80px;
    height: 80px;
    opacity: 0.9;
}

.hero-visual .screenshot-placeholder strong {
    font-size: 1.25rem;
}

.hero-visual .screenshot-placeholder span {
    opacity: 0.85;
    font-size: 0.9375rem;
}

/* Feature cards */
.feature-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}

.feature-card {
    background-color: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 36px 28px;
    text-align: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent);
}

.feature-card .icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 20px;
    background-color: rgba(43, 170, 226, 0.1);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-accent-dark);
}

.feature-card .icon svg {
    width: 32px;
    height: 32px;
}

.feature-card h3 {
    color: var(--color-primary);
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
    counter-reset: step;
}

.step {
    background-color: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 24px;
    position: relative;
}

.step::before {
    counter-increment: step;
    content: counter(step);
    position: absolute;
    top: -20px;
    left: 24px;
    width: 40px;
    height: 40px;
    background-color: var(--color-primary);
    color: #FFFFFF;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.125rem;
    box-shadow: var(--shadow-md);
}

.step h3 {
    color: var(--color-primary);
    font-size: 1.125rem;
    margin-top: 12px;
    margin-bottom: 10px;
}

.step p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* Detail features (two columns) */
.detail-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px 48px;
    max-width: 900px;
    margin: 0 auto;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 12px 0;
}

.detail-item .check-badge {
    flex-shrink: 0;
    width: 28px;
    height: 28px;
    background-color: rgba(16, 185, 129, 0.12);
    color: var(--color-success);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 2px;
}

.detail-item .check-badge svg {
    width: 16px;
    height: 16px;
}

.detail-item h4 {
    color: var(--color-primary);
    font-size: 1rem;
    margin-bottom: 4px;
}

.detail-item p {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

/* Download box */
.download-box {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: #FFFFFF;
    border-radius: var(--radius-lg);
    padding: 56px 48px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
}

.download-box h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 12px;
    color: #FFFFFF;
}

.download-box p {
    opacity: 0.9;
    margin-bottom: 32px;
    font-size: 1.0625rem;
}

.download-box .btn {
    margin-bottom: 24px;
}

.download-meta {
    font-size: 0.875rem;
    opacity: 0.8;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px 24px;
}

.download-meta span {
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

/* Donate */
.donate-box {
    text-align: center;
    max-width: 640px;
    margin: 0 auto;
    padding: 48px 32px;
    background-color: #FFFFFF;
    border: 2px dashed var(--color-donate);
    border-radius: var(--radius-lg);
}

.donate-box .heart {
    color: var(--color-donate);
    font-size: 2.5rem;
    margin-bottom: 16px;
    line-height: 1;
}

.donate-box h2 {
    color: var(--color-primary);
    font-size: 1.75rem;
    margin-bottom: 12px;
}

.donate-box p {
    color: var(--color-text-muted);
    margin-bottom: 28px;
}

/* Footer */
.site-footer {
    background-color: var(--color-primary);
    color: rgba(255, 255, 255, 0.85);
    padding: 56px 0 32px;
    margin-top: var(--section-spacing);
}

.site-footer .container {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 32px;
}

.site-footer .footer-brand img {
    height: 40px;
    margin-bottom: 16px;
    filter: brightness(0) invert(1);
}

.site-footer .footer-brand p {
    font-size: 0.9375rem;
    opacity: 0.8;
    max-width: 320px;
}

.site-footer h4 {
    color: #FFFFFF;
    font-size: 0.9375rem;
    margin-bottom: 16px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.site-footer ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.site-footer a {
    color: rgba(255, 255, 255, 0.85);
    font-size: 0.9375rem;
}

.site-footer a:hover {
    color: var(--color-accent);
}

.site-footer .copyright {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 24px;
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
}

/* Help page (hilfe.html) */
.help-page {
    padding-top: 48px;
    padding-bottom: var(--section-spacing);
}

.help-layout {
    display: grid;
    grid-template-columns: 260px 1fr;
    gap: 56px;
    align-items: start;
}

.help-toc {
    position: sticky;
    top: 96px;
    background-color: var(--color-bg-alt);
    padding: 24px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.help-toc h3 {
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-bottom: 12px;
}

.help-toc ul {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.help-toc a {
    color: var(--color-text);
    font-size: 0.9375rem;
    padding: 6px 8px;
    border-radius: var(--radius-sm);
    display: block;
    transition: background-color 0.15s ease, color 0.15s ease;
}

.help-toc a:hover {
    background-color: rgba(43, 170, 226, 0.1);
    color: var(--color-accent-dark);
}

.help-content h1 {
    color: var(--color-primary);
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    margin-bottom: 12px;
    line-height: 1.2;
}

.help-content > p.lead {
    color: var(--color-text-muted);
    font-size: 1.125rem;
    margin-bottom: 48px;
}

.help-content h2 {
    color: var(--color-primary);
    font-size: 1.5rem;
    margin-top: 56px;
    margin-bottom: 20px;
    padding-top: 8px;
    scroll-margin-top: 96px;
}

.help-content h2:first-of-type {
    margin-top: 0;
}

.help-content h3 {
    color: var(--color-primary);
    font-size: 1.125rem;
    margin-top: 24px;
    margin-bottom: 8px;
}

.help-content p {
    margin-bottom: 16px;
    color: var(--color-text);
}

.help-content ol,
.help-content ul.bulleted {
    margin: 16px 0 16px 24px;
}

.help-content ol {
    list-style: decimal;
}

.help-content ul.bulleted {
    list-style: disc;
}

.help-content li {
    margin-bottom: 8px;
    color: var(--color-text);
}

.help-content .callout {
    background-color: rgba(43, 170, 226, 0.08);
    border-left: 4px solid var(--color-accent);
    padding: 16px 20px;
    border-radius: var(--radius-sm);
    margin: 24px 0;
    color: var(--color-text);
}

.help-content .callout strong {
    color: var(--color-primary);
}

.help-content .callout--warning {
    background-color: rgba(245, 158, 11, 0.1);
    border-left-color: var(--color-donate);
}

/* FAQ accordion */
.faq {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.faq-item {
    background-color: #FFFFFF;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color 0.2s ease;
}

.faq-item.open {
    border-color: var(--color-accent);
}

.faq-question {
    width: 100%;
    background: none;
    border: 0;
    padding: 18px 20px;
    text-align: left;
    font: inherit;
    font-weight: 600;
    color: var(--color-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 1rem;
}

.faq-question:hover {
    background-color: var(--color-bg-alt);
}

.faq-question .chevron {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    transition: transform 0.2s ease;
    color: var(--color-text-muted);
}

.faq-item.open .faq-question .chevron {
    transform: rotate(180deg);
    color: var(--color-accent);
}

.faq-answer {
    padding: 0 20px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease, padding 0.25s ease;
    color: var(--color-text-muted);
}

.faq-item.open .faq-answer {
    padding: 0 20px 20px;
    max-height: 600px;
}

/* Legal page (impressum, datenschutz) */
.legal-page {
    padding: 48px 0 var(--section-spacing);
    max-width: 760px;
    margin: 0 auto;
}

.legal-page h1 {
    color: var(--color-primary);
    font-size: 2rem;
    margin-bottom: 24px;
}

.legal-page h2 {
    color: var(--color-primary);
    font-size: 1.25rem;
    margin-top: 32px;
    margin-bottom: 12px;
}

.legal-page p,
.legal-page li {
    color: var(--color-text);
    margin-bottom: 12px;
}

.legal-page ul {
    list-style: disc;
    margin-left: 24px;
}

.legal-page .placeholder {
    background-color: rgba(245, 158, 11, 0.12);
    padding: 12px 16px;
    border-left: 4px solid var(--color-donate);
    border-radius: var(--radius-sm);
    font-size: 0.9375rem;
    color: var(--color-text);
}

/* Reveal-on-scroll animation */
.reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps {
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .help-layout {
        grid-template-columns: 220px 1fr;
        gap: 32px;
    }
}

@media (max-width: 768px) {
    :root {
        --section-spacing: 56px;
    }

    .nav {
        position: fixed;
        top: 72px;
        left: 0;
        right: 0;
        background-color: #FFFFFF;
        flex-direction: column;
        align-items: stretch;
        padding: 24px;
        gap: 16px;
        border-bottom: 1px solid var(--color-border);
        box-shadow: var(--shadow-md);
        transform: translateY(-130%);
        transition: transform 0.25s ease;
    }

    .nav.open {
        transform: translateY(0);
    }

    .nav-toggle {
        display: block;
    }

    .nav a {
        padding: 8px 0;
    }

    .nav-cta {
        text-align: center;
    }

    .hero {
        padding: 56px 0 64px;
    }

    .hero .container {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .hero-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-actions .btn {
        width: 100%;
    }

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

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

    .detail-grid {
        grid-template-columns: 1fr;
        gap: 8px;
    }

    .download-box {
        padding: 40px 24px;
    }

    .help-layout {
        grid-template-columns: 1fr;
    }

    .help-toc {
        position: static;
    }

    .site-footer .container {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .logo-text {
        display: none;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 16px;
    }

    .hero-content h1 {
        font-size: 1.875rem;
    }

    .donate-box,
    .download-box {
        padding: 32px 20px;
    }
}