/* ═══════════════════════════════════════════════════════════════
   GASTRO.OS — Landing Page
   Aesthetic: Light editorial luxury
   Fonts: Instrument Serif (display) + Satoshi (body)
   ═══════════════════════════════════════════════════════════════ */

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

:root {
    --color-bg:        #FAFBFC;
    --color-surface:   #FFFFFF;
    --color-surface-2: #F3F4F6;
    --color-border:    #E5E7EB;
    --color-border-2:  #D1D5DB;
    --color-text:      #111827;
    --color-text-dim:  #4B5563;
    --color-text-mute: #9CA3AF;
    --color-primary:   #00A67E;
    --color-primary-dim: #00805F;
    --color-accent:    #FFB800;
    --color-teal-dark: #00463C;
    --color-teal-glow: rgba(0, 166, 126, 0.08);

    --font-display: 'Instrument Serif', Georgia, serif;
    --font-body:    'Satoshi', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono:    'JetBrains Mono', monospace;

    --container: 1200px;
    --gap: clamp(1.5rem, 4vw, 3rem);
    --section-pad: clamp(4rem, 10vw, 8rem);

    --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
}

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-body);
    font-size: clamp(0.9375rem, 0.9rem + 0.2vw, 1.0625rem);
    line-height: 1.7;
    color: var(--color-text-dim);
    background: var(--color-bg);
    overflow-x: hidden;
}

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

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

::selection {
    background: var(--color-primary);
    color: var(--color-bg);
}

.container {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 2.5rem);
}

/* ─── Typography ─────────────────────────────────────────────── */
h1, h2, h3 {
    font-family: var(--font-display);
    color: var(--color-text);
    font-weight: 400;
    line-height: 1.15;
}

h1 { font-size: clamp(2.5rem, 2rem + 4vw, 5rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 1.5rem + 3vw, 3.5rem); letter-spacing: -0.01em; }
h3 { font-size: clamp(1.25rem, 1rem + 0.5vw, 1.5rem); }

h1 em, h2 em {
    font-style: italic;
    color: var(--color-primary);
}

.section-label {
    display: inline-block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-primary);
    margin-bottom: 1rem;
    padding: 0.35rem 0.75rem;
    border: 1px solid var(--color-border-2);
    border-radius: 100px;
    background: var(--color-teal-glow);
}

.section-title { margin-bottom: 1rem; }
.section-sub { max-width: 600px; font-size: 1.1rem; line-height: 1.7; }

/* ─── Buttons ────────────────────────────────────────────────── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9375rem;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    transition: all 0.3s var(--ease-out);
    text-decoration: none;
}

.btn--primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: 0 0 0 0 rgba(0, 166, 126, 0), 0 2px 8px rgba(0,0,0,0.08);
}
.btn--primary:hover {
    background: #00bf91;
    color: #fff;
    box-shadow: 0 0 24px rgba(0, 166, 126, 0.3), 0 4px 16px rgba(0,0,0,0.08);
    transform: translateY(-1px);
}

.btn--ghost {
    background: transparent;
    color: var(--color-text);
    border: 1px solid var(--color-border-2);
}
.btn--ghost:hover {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-text-mute);
}

.btn--lg { padding: 1rem 2rem; font-size: 1rem; border-radius: 10px; }
.btn--full { width: 100%; justify-content: center; }

/* ─── Navigation ─────────────────────────────────────────────── */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 1rem 0;
    transition: all 0.4s var(--ease-out);
    background: transparent;
}

.nav--scrolled {
    background: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    border-bottom: 1px solid var(--color-border);
    padding: 0.6rem 0;
}

.nav__inner {
    max-width: var(--container);
    margin: 0 auto;
    padding: 0 clamp(1.25rem, 4vw, 2.5rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav__logo {
    display: flex;
    align-items: center;
    text-decoration: none;
}
.nav__logo:hover { opacity: 0.9; }
.nav__logo-img { height: 34px; width: 170px; }
.nav__logo-dot { color: var(--color-accent); }

.nav__links {
    display: flex;
    align-items: center;
    gap: 2rem;
}
.nav__links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-dim);
    transition: color 0.2s;
}
.nav__links a:hover { color: var(--color-text); }
.nav__links .nav__cta {
    background: var(--color-primary);
    color: #fff;
    padding: 0.5rem 1.25rem;
    border-radius: 8px;
    font-weight: 600;
}
.nav__links .nav__cta:hover { background: #00bf91; color: #fff; }

.nav__burger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.nav__burger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: all 0.3s;
}

.nav__mobile {
    display: none;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: 99;
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(30px);
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2rem;
}
.nav__mobile a { font-size: 1.5rem; color: var(--color-text); font-family: var(--font-display); }

@media (max-width: 768px) {
    .nav__links { display: none; }
    .nav__burger { display: flex; }
    .nav-open .nav__mobile { display: flex; }
    .nav-open .nav__burger span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav-open .nav__burger span:nth-child(2) { opacity: 0; }
    .nav-open .nav__burger span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
}

/* ─── Hero ────────────────────────────────────────────────────── */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: calc(var(--section-pad) + 4rem) 0 var(--section-pad);
    overflow: hidden;
}

.hero__grain {
    position: absolute;
    inset: 0;
    opacity: 0.015;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
    background-repeat: repeat;
    background-size: 256px 256px;
    pointer-events: none;
}

.hero__glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    pointer-events: none;
}
.hero__glow--1 {
    width: 600px; height: 600px;
    top: -200px; right: -100px;
    background: radial-gradient(circle, rgba(0, 166, 126, 0.06) 0%, transparent 70%);
}
.hero__glow--2 {
    width: 400px; height: 400px;
    bottom: -100px; left: -100px;
    background: radial-gradient(circle, rgba(255, 184, 0, 0.08) 0%, transparent 70%);
}

.hero__content { max-width: 800px; }

.hero__badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text-dim);
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-border);
    border-radius: 100px;
    background: var(--color-surface);
    margin-bottom: 2rem;
}
.hero__badge-dot {
    width: 6px; height: 6px;
    border-radius: 50%;
    background: var(--color-primary);
    box-shadow: 0 0 8px var(--color-primary);
    animation: pulse-dot 2s infinite;
}
@keyframes pulse-dot {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.4; }
}

.hero__title { margin-bottom: 1.5rem; }

.hero__sub {
    font-size: clamp(1.05rem, 1rem + 0.3vw, 1.2rem);
    max-width: 600px;
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

.hero__actions { display: flex; gap: 1rem; flex-wrap: wrap; }

.hero__stats {
    display: flex;
    gap: 3rem;
    margin-top: 5rem;
    padding-top: 3rem;
    border-top: 1px solid var(--color-border);
}

.hero__stat-num {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-text);
    line-height: 1;
    margin-bottom: 0.35rem;
}
.hero__stat-label {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--color-text-mute);
}

@media (max-width: 600px) {
    .hero__stats { gap: 1.5rem; flex-wrap: wrap; }
}

/* ─── Problems ───────────────────────────────────────────────── */
.problems {
    padding: var(--section-pad) 0;
    border-top: 1px solid var(--color-border);
}

.problems__header { margin-bottom: 3rem; }

.problems__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--gap);
    margin-bottom: 4rem;
}

.problems__card {
    padding: 2rem;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-surface);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    transition: all 0.4s var(--ease-out);
}
.problems__card:hover {
    border-color: var(--color-border-2);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.08);
}

.problems__icon {
    width: 44px; height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 12px;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    color: var(--color-accent);
    margin-bottom: 1.25rem;
}

.problems__card h3 {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.problems__solution {
    text-align: center;
    position: relative;
}
.problems__solution-line {
    width: 1px; height: 60px;
    background: linear-gradient(to bottom, var(--color-border), var(--color-primary));
    margin: 0 auto 1.5rem;
}
.problems__solution-text {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--color-text);
}
.problems__solution-text strong { color: var(--color-primary); }

/* ─── Features ───────────────────────────────────────────────── */
.features {
    padding: var(--section-pad) 0;
    border-top: 1px solid var(--color-border);
}

.features__header {
    margin-bottom: 3.5rem;
}

.features__grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.feature-card {
    padding: 2rem;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-surface);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    transition: all 0.4s var(--ease-out);
    position: relative;
    overflow: hidden;
}
.feature-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0; right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--color-primary), transparent);
    opacity: 0;
    transition: opacity 0.4s;
}
.feature-card:hover {
    border-color: var(--color-border-2);
    transform: translateY(-4px);
    box-shadow: 0 16px 48px rgba(0,0,0,0.08);
}
.feature-card:hover::before { opacity: 1; }

.feature-card--accent {
    border-color: rgba(0, 166, 126, 0.2);
    background: linear-gradient(135deg, rgba(0, 166, 126, 0.06) 0%, var(--color-surface) 60%);
}

.feature-card__number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--color-border-2);
    line-height: 1;
    margin-bottom: 1rem;
    transition: color 0.3s;
}
.feature-card:hover .feature-card__number { color: var(--color-primary-dim); }

.feature-card__icon {
    color: var(--color-primary);
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.feature-card p { font-size: 0.9375rem; }

.feature-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
    margin-top: 1.25rem;
    list-style: none;
}
.feature-card__tags li {
    font-family: var(--font-mono);
    font-size: 0.6875rem;
    letter-spacing: 0.04em;
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    color: var(--color-text-mute);
}

/* ─── USPs ───────────────────────────────────────────────────── */
.usps {
    padding: var(--section-pad) 0;
}

.usps__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.usp {
    padding: 2.5rem;
    position: relative;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-surface);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.usp__accent {
    position: absolute;
    top: 2.5rem; left: 0;
    width: 3px; height: 2.5rem;
    background: linear-gradient(to bottom, var(--color-primary), var(--color-accent));
    border-radius: 0 2px 2px 0;
}

.usp h3 {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

/* ─── Security ───────────────────────────────────────────────── */
.security {
    padding: var(--section-pad) 0;
    border-top: 1px solid var(--color-border);
    background:
        radial-gradient(ellipse at 20% 50%, rgba(0, 166, 126, 0.04) 0%, transparent 50%),
        var(--color-bg);
}

.security__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

@media (max-width: 900px) {
    .security__layout { grid-template-columns: 1fr; gap: 3rem; }
}

.security__grid {
    display: grid;
    gap: 1.5rem;
}

.security__item {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    border: 1px solid var(--color-border);
    border-radius: 12px;
    background: var(--color-surface);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    transition: all 0.3s var(--ease-out);
}
.security__item:hover {
    border-color: var(--color-border-2);
    transform: translateX(4px);
}

.security__icon {
    flex-shrink: 0;
    width: 40px; height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 10px;
    background: var(--color-teal-glow);
    color: var(--color-primary);
}

.security__item h4 {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-text);
    margin-bottom: 0.25rem;
}
.security__item p { font-size: 0.875rem; line-height: 1.6; }

/* ─── Audiences ──────────────────────────────────────────────── */
.audiences {
    padding: var(--section-pad) 0;
    border-top: 1px solid var(--color-border);
}

.audiences__header { margin-bottom: 3rem; }

.audiences__grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 1.5rem;
}

.audience {
    padding: 2rem;
    border: 1px solid var(--color-border);
    border-radius: 16px;
    background: var(--color-surface);
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
    transition: all 0.4s var(--ease-out);
}
.audience:hover {
    border-color: var(--color-border-2);
    transform: translateY(-4px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.08);
}

.audience__num {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--color-border-2);
    line-height: 1;
    margin-bottom: 1rem;
}
.audience:hover .audience__num { color: var(--color-accent); }

.audience h3 {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* ─── CTA / Demo ─────────────────────────────────────────────── */
.cta {
    padding: var(--section-pad) 0;
    border-top: 1px solid var(--color-border);
    background:
        radial-gradient(ellipse at 80% 20%, rgba(255, 184, 0, 0.03) 0%, transparent 40%),
        radial-gradient(ellipse at 20% 80%, rgba(0, 166, 126, 0.04) 0%, transparent 40%),
        var(--color-bg);
}

.cta__layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

@media (max-width: 900px) {
    .cta__layout { grid-template-columns: 1fr; gap: 3rem; }
}

.cta__checks {
    list-style: none;
    margin-top: 2rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}
.cta__checks li {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--color-text);
    font-size: 0.95rem;
}
.cta__checks li::before {
    content: '';
    flex-shrink: 0;
    width: 20px; height: 20px;
    border-radius: 50%;
    background: var(--color-teal-glow);
    border: 1px solid rgba(0, 166, 126, 0.3);
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 12 12' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M2 6l3 3 5-5' stroke='%2300A67E' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: center;
}

.cta__form-wrap {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 1px 3px rgba(0,0,0,0.06);
}

.cta__form {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.25rem;
}

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }
.form-group--full { grid-column: 1 / -1; }

.form-group label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text);
}
.form-group .optional { color: var(--color-text-mute); font-weight: 400; }

.form-group input,
.form-group textarea {
    font-family: var(--font-body);
    font-size: 0.9375rem;
    padding: 0.75rem 1rem;
    border-radius: 10px;
    border: 1px solid #D1D5DB;
    background: #F9FAFB;
    color: var(--color-text);
    transition: all 0.2s;
    outline: none;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: var(--color-text-mute); }

.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-teal-glow);
}

.form-group textarea { resize: vertical; }

.cta__form .btn { grid-column: 1 / -1; margin-top: 0.5rem; }

.cta__privacy {
    grid-column: 1 / -1;
    font-size: 0.75rem;
    color: var(--color-text-mute);
    text-align: center;
}

@media (max-width: 600px) {
    .cta__form { grid-template-columns: 1fr; }
    .cta__form-wrap { padding: 1.5rem; }
}

/* ─── Footer ─────────────────────────────────────────────────── */
.footer {
    padding: 4rem 0 2rem;
    border-top: 1px solid var(--color-border);
    background: #F3F4F6;
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
    margin-bottom: 3rem;
}

@media (max-width: 768px) {
    .footer__grid { grid-template-columns: 1fr 1fr; gap: 2rem; }
}
@media (max-width: 480px) {
    .footer__grid { grid-template-columns: 1fr; }
}

.footer__logo-img {
    height: 28px;
    width: 140px;
    margin-bottom: 0.75rem;
}

.footer__brand p { font-size: 0.9rem; }

.footer__col h4 {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 0.8rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-text);
    margin-bottom: 1rem;
}
.footer__col a {
    display: block;
    color: var(--color-text-dim);
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}
.footer__col a:hover { color: var(--color-text); }

.footer__bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--color-border);
    text-align: center;
}
.footer__bottom p { font-size: 0.8rem; color: var(--color-text-mute); }

/* ─── Page (Impressum, Datenschutz) ──────────────────────────── */
.page {
    padding: calc(var(--section-pad) + 4rem) 0 var(--section-pad);
}

.page__content {
    max-width: 720px;
    margin: 0 auto;
}
.page__content h1 {
    font-size: clamp(2rem, 1.5rem + 2vw, 3rem);
    margin-bottom: 2rem;
}
.page__content h2 {
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 0.75rem;
}
.page__content h3 {
    font-size: 1.15rem;
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    font-family: var(--font-body);
    font-weight: 700;
}
.page__content p { margin-bottom: 1rem; }
.page__content ul, .page__content ol { margin-bottom: 1rem; padding-left: 1.5rem; }
.page__content li { margin-bottom: 0.4rem; }
.page__content strong { color: var(--color-text); }

/* ─── Reveal Animations ──────────────────────────────────────── */
[data-reveal] {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.8s var(--ease-out), transform 0.8s var(--ease-out);
}
[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}
[data-reveal][data-delay="1"] { transition-delay: 0.1s; }
[data-reveal][data-delay="2"] { transition-delay: 0.2s; }
[data-reveal][data-delay="3"] { transition-delay: 0.3s; }
[data-reveal][data-delay="4"] { transition-delay: 0.4s; }

/* ─── Scrollbar ──────────────────────────────────────────────── */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: var(--color-bg); }
::-webkit-scrollbar-thumb {
    background: var(--color-border-2);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover { background: var(--color-text-mute); }