/* ============================================================
   bst-server.de – Landing Page Styles
   ============================================================ */

/* ---------- Local Fonts ---------- */
@font-face {
    font-family: 'Kelson Sans';
    font-style: normal;
    font-weight: 300;
    font-display: swap;
    src: url('../fonts/kelson/kelson-sans-light.woff2') format('woff2');
}
@font-face {
    font-family: 'Kelson Sans';
    font-style: normal;
    font-weight: 400;
    font-display: swap;
    src: url('../fonts/kelson/kelson-sans-regular.woff2') format('woff2');
}
@font-face {
    font-family: 'Kelson Sans';
    font-style: normal;
    font-weight: 700;
    font-display: swap;
    src: url('../fonts/kelson/kelson-sans-bold.woff2') format('woff2');
}
@font-face {
    font-family: 'Montserrat';
    font-style: normal;
    font-weight: 400 800;
    font-display: swap;
    src: url('../fonts/Montserrat.woff2') format('woff2');
}

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

:root {
    --color-bg:          #080c12;
    --color-surface:     #0f1620;
    --color-primary:     #60a5fa;
    --color-primary-dim: #3b82f6;
    --color-text:        #e8edf5;
    --color-muted:       #8b95a9;
    --color-border:      #1e2a3d;
    --color-glow:        rgba(96, 165, 250, 0.12);

    --font-sans: 'Kelson Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', 'Consolas', monospace;

    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.6;
}

/* ---------- Page Wrapper ---------- */
.page-wrapper {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* ---------- Hero ---------- */
.hero {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    overflow: hidden;
    padding: 2rem 1.5rem 3rem;
}

/* --- Background Effects --- */
.hero-bg {
    position: absolute;
    inset: 0;
    pointer-events: none;
    z-index: 0;
}

.orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.35;
}

.orb-1 {
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(59,130,246,0.25) 0%, transparent 70%);
    top: -15%;
    left: -10%;
}

.orb-2 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(139,92,246,0.18) 0%, transparent 70%);
    bottom: -20%;
    right: -10%;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.02) 1px, transparent 1px);
    background-size: 60px 60px;
}

/* --- Content --- */
.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 720px;
}

.logo-mark {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    background: rgba(255,255,255,0.03);
    color: var(--color-primary);
    margin-bottom: 2rem;
    transition: transform 0.3s ease;
}

.logo-mark:hover {
    transform: scale(1.05);
}

.domain {
    font-family: 'Montserrat', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    font-size: clamp(3rem, 10.5vw, 5.8rem);
    font-weight: 700;
    line-height: 1.05;
    color: #fff;
    text-shadow: 0 0 60px rgba(96, 165, 250, 0.15);
    margin-bottom: 0.6rem;
}

.tagline {
    font-size: clamp(1rem, 2.5vw, 1.35rem);
    font-weight: 500;
    color: var(--color-primary);
    letter-spacing: 0.02em;
    margin-bottom: 0.6rem;
}

.subline {
    font-size: clamp(0.95rem, 2vw, 1.1rem);
    color: var(--color-muted);
    max-width: 480px;
    margin: 0 auto 2.5rem;
}

/* --- Kontakt-Button --- */
.contact-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.7rem 2rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-primary-dim);
    background: rgba(59,130,246,0.1);
    color: var(--color-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 550;
    cursor: pointer;
    transition: background 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.contact-btn:hover {
    background: rgba(59,130,246,0.2);
    border-color: var(--color-primary);
    box-shadow: 0 0 24px var(--color-glow);
}
.contact-btn-icon {
    width: 1.25rem;
    height: 1.25rem;
    flex-shrink: 0;
}

/* --- Modal-Overlay --- */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(4,8,14,0.82);
    backdrop-filter: blur(4px);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}
.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    position: relative;
    width: 100%;
    max-width: 520px;
    max-height: 90vh;
    overflow-y: auto;
    margin: 1.5rem;
    padding: 2rem 2rem 1.75rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-surface);
    box-shadow: 0 25px 60px rgba(0,0,0,0.5);
    transform: translateY(20px) scale(0.97);
    transition: transform 0.3s ease;
}
.modal-overlay.open .modal-box {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 0.75rem;
    right: 0.85rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: none;
    border-radius: var(--radius-sm);
    background: transparent;
    color: var(--color-muted);
    font-size: 1.2rem;
    cursor: pointer;
    transition: color 0.2s ease, background 0.2s ease;
}
.modal-close:hover {
    color: var(--color-text);
    background: rgba(255,255,255,0.05);
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 650;
    color: #fff;
    margin-bottom: 0.3rem;
    letter-spacing: -0.015em;
}
.modal-sub {
    font-size: 0.8rem;
    color: var(--color-muted);
    margin-bottom: 1.5rem;
}

/* --- Formular --- */
.contact-form {
    display: flex;
    flex-direction: column;
    gap: 0.85rem;
}

.form-row {
    display: flex;
    gap: 0.85rem;
}
.form-row .form-group {
    flex: 1;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.form-group label {
    font-size: 0.75rem;
    font-weight: 550;
    color: var(--color-muted);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}
.form-group label .req {
    color: #ef4444;
    margin-left: 1px;
}

.form-group input,
.form-group textarea {
    padding: 0.6rem 0.85rem;
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    background: rgba(255,255,255,0.03);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}
.form-group input:focus,
.form-group textarea:focus {
    border-color: var(--color-primary-dim);
    box-shadow: 0 0 0 3px rgba(59,130,246,0.12);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--color-muted);
    opacity: 0.5;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Honeypot – unsichtbar für Menschen */
.hp-field {
    position: absolute;
    left: -9999px;
    opacity: 0;
    height: 0;
    overflow: hidden;
}

.form-submit {
    margin-top: 0.5rem;
    padding: 0.7rem 1.5rem;
    border: none;
    border-radius: var(--radius-sm);
    background: var(--color-primary-dim);
    color: #fff;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 550;
    cursor: pointer;
    transition: background 0.25s ease, box-shadow 0.25s ease;
}
.form-submit:hover {
    background: var(--color-primary);
    box-shadow: 0 0 24px var(--color-glow);
}
.form-submit:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* --- Form-Status --- */
.form-status {
    display: none;
    margin-top: 0.75rem;
    padding: 0.6rem 1rem;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    text-align: center;
}
.form-status.success {
    display: block;
    background: rgba(34,197,94,0.1);
    border: 1px solid rgba(34,197,94,0.25);
    color: #4ade80;
}
.form-status.error {
    display: block;
    background: rgba(239,68,68,0.1);
    border: 1px solid rgba(239,68,68,0.25);
    color: #f87171;
}

/* --- Scroll Hint --- */
.service-brand {
    position: absolute;
    bottom: 1.5rem;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.35rem;
}

.service-label {
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted);
}

.service-logo {
    height: 22px;
    width: auto;
    opacity: 0.85;
}

/* ---------- Footer ---------- */
.footer {
    flex-shrink: 0;
    padding: 1.25rem 1.5rem 1.5rem;
    text-align: center;
    border-top: 1px solid var(--color-border);
    background: rgba(255,255,255,0.01);
}

.footer-nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.footer-nav a {
    color: var(--color-muted);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 500;
    letter-spacing: 0.02em;
    transition: color 0.2s ease;
    position: relative;
}

.footer-nav a::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -2px;
    width: 0;
    height: 1px;
    background: var(--color-primary);
    transition: width 0.25s ease;
}

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

.footer-nav a:hover::after {
    width: 100%;
}

/* ---------- Sub Pages ---------- */
.sub-page {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.sub-header {
    padding: 2rem 1.5rem 0;
    max-width: 720px;
    margin: 0 auto;
    width: 100%;
}

.sub-back {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    color: var(--color-muted);
    text-decoration: none;
    font-size: 0.85rem;
    transition: color 0.2s ease;
}

.sub-back:hover {
    color: var(--color-primary);
}

.sub-body {
    flex: 1;
    max-width: 720px;
    width: 100%;
    margin: 0 auto;
    padding: 2.5rem 1.5rem 3rem;
}

.sub-body h1 {
    font-size: clamp(1.5rem,4vw,2.2rem);
    font-weight: 700;
    color: #fff;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.sub-body h2 {
    font-size: 1.15rem;
    font-weight: 600;
    color: var(--color-primary);
    margin-top: 2rem;
    margin-bottom: 0.6rem;
}

.sub-body p {
    color: var(--color-muted);
    margin-bottom: 1rem;
    font-size: 0.95rem;
    line-height: 1.7;
}

.sub-body ol {
    color: var(--color-muted);
    padding-left: 1.5rem;
    margin-bottom: 1rem;
    font-size: 0.95rem;
    line-height: 1.7;
}
.sub-body ol li {
    margin-bottom: 0.6rem;
}
.sub-body ol li::marker {
    color: var(--color-muted);
}

.sub-body address {
    font-style: normal;
    color: var(--color-text);
    background: rgba(255,255,255,0.02);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 1.25rem 1.5rem;
    margin-top: 1rem;
    font-size: 0.9rem;
    line-height: 1.8;
}

.sub-footer {
    flex-shrink: 0;
    padding: 1.25rem 1.5rem 1.5rem;
    text-align: center;
    border-top: 1px solid var(--color-border);
}

/* ---------- Responsive ---------- */
@media (max-width: 600px) {
    .hero {
        padding: 1.5rem 1rem 2rem;
    }

    .footer {
        padding: 1rem 1rem 1.25rem;
    }

    .footer-nav {
        gap: 1.5rem;
    }
}

@media (min-width: 1200px) {
    .hero-content {
        max-width: 800px;
    }
}