/* ========================================
   COMPONENTS.CSS — Shared Components
   Header, Navigation, Footer, Section Labels, Forms, Scroll Reveal
   ======================================== */

/* ---- Scroll Reveal Animations ---- */
.js-ready .reveal {
    opacity: 0;
    transform: translateY(40px);
    /* Custom Property für Delay — eliminiert 4 separate Delay-Klassen */
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1) var(--reveal-delay, 0s),
                transform 0.8s cubic-bezier(0.4, 0, 0.2, 1) var(--reveal-delay, 0s);
}

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

/* Delay-Stufen über Custom Property statt eigener Klassen */
.reveal-delay-1 { --reveal-delay: 0.1s; }
.reveal-delay-2 { --reveal-delay: 0.2s; }
.reveal-delay-3 { --reveal-delay: 0.3s; }
.reveal-delay-4 { --reveal-delay: 0.4s; }

@media (prefers-reduced-motion: reduce) {
    .js-ready .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
}

/* ---- Shared Background Pattern (verwendet in Hero + Error Page) ---- */
.bg-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
    background-size: 80px 80px;
    mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.3) 20%, transparent 60%);
    -webkit-mask-image: radial-gradient(ellipse at center, rgba(0, 0, 0, 0.3) 20%, transparent 60%);
}

/* ---- Header / Navigation (Desktop-Grundstil in Critical CSS, hier nur Ergänzungen) ---- */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: 1.25rem 0;
    transition: background var(--transition-smooth),
                padding var(--transition-smooth);
}

.header::before {
    content: '';
    position: absolute;
    inset: 0;
    z-index: -1;
    backdrop-filter: blur(20px) saturate(1.2);
    -webkit-backdrop-filter: blur(20px) saturate(1.2);
    opacity: 0;
    transition: opacity var(--transition-smooth);
    pointer-events: none;
}

.header.scrolled {
    background: rgba(10, 10, 10, 0.85);
    padding: 0.75rem 0;
    border-bottom: 1px solid var(--color-border);
}

.header.scrolled::before {
    opacity: 1;
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: baseline;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text-primary);
}

.logo__accent {
    color: var(--color-accent);
    font-weight: 800;
    font-size: 0.6em;
    position: relative;
    top: -0.75em;
    margin-left: 2px;
}

.nav__link {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    position: relative;
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1.5px;
    background: var(--color-accent);
    transition: width var(--transition-smooth);
}

.nav__link:hover { color: var(--color-text-primary); }
.nav__link:hover::after { width: 100%; }

.nav__cta {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-bg-primary);
    background: var(--color-accent);
    padding: 0.5rem 1.25rem;
    border-radius: 100px;
    transition: background var(--transition-fast),
                transform var(--transition-fast),
                box-shadow var(--transition-fast);
}

.nav__cta:hover {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
    box-shadow: 0 4px 20px var(--color-accent-glow);
}

/* Mobile Menu Toggle — min 44x44px Touch-Target (WCAG 2.5.8) */
.menu-toggle {
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 5px;
    min-width: 44px;
    min-height: 44px;
    padding: 10px;
    z-index: 1001;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text-primary);
    border-radius: 2px;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.menu-toggle.active span:nth-child(2) { opacity: 0; }
.menu-toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---- Section Labels ---- */
.section-label {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 500;
    color: var(--color-accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 1rem;
}

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 3.5rem;
    max-width: 500px;
}

/* ---- Form Fields (Floating Labels) ---- */
.form-field {
    position: relative;
}

.form-field input,
.form-field textarea {
    width: 100%;
    padding: 1.5rem 1.25rem 0.5rem;
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: 0.875rem;
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast);
}

/* Placeholder unsichtbar — dient nur als CSS-Trigger für :placeholder-shown */
.form-field input::placeholder,
.form-field textarea::placeholder {
    color: transparent;
}

/* Floating Label */
.form-label {
    position: absolute;
    top: 1rem;
    left: 1.25rem;
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
    pointer-events: none;
    transform-origin: left top;
    transition: transform var(--transition-fast), color var(--transition-fast);
}

.form-label span {
    color: var(--color-accent);
}

/* Label schwebt nach oben bei Fokus oder wenn Feld ausgefüllt ist */
.form-field input:focus + .form-label,
.form-field input:not(:placeholder-shown) + .form-label,
.form-field textarea:focus + .form-label,
.form-field textarea:not(:placeholder-shown) + .form-label {
    transform: translateY(-0.5rem) scale(0.75);
    color: var(--color-accent);
}

.form-field input:focus,
.form-field textarea:focus {
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-dim);
    outline: none;
}

/* Fehler-State: nicht nur Farbe, sondern auch Icon-Indikator im Fehlertext */
.form-field input.invalid,
.form-field textarea.invalid {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px var(--color-error-dim);
}

.form-field input.invalid + .form-label,
.form-field textarea.invalid + .form-label {
    color: var(--color-error);
}

.form-field textarea {
    resize: vertical;
    min-height: 120px;
}

/* Feld-spezifische Fehlermeldungen */
.form-error {
    display: none;
    font-size: 0.75rem;
    color: var(--color-error);
    margin-top: 0.375rem;
    padding-left: 0.25rem;
}

.form-error.visible {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

.form-error::before {
    content: "!";
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    background: var(--color-error);
    color: var(--color-bg-primary);
    font-size: 0.625rem;
    font-weight: 700;
    flex-shrink: 0;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    width: 100%;
    padding: 1rem 2rem;
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-bg-primary);
    background: var(--color-accent);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast),
                transform var(--transition-fast),
                box-shadow var(--transition-fast);
}

.form-submit:hover {
    background: var(--color-accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--color-accent-glow);
}

.form-submit:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.form-status {
    padding: 0.875rem 1.25rem;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    display: none;
}

.form-status.success {
    display: block;
    background: var(--color-success-dim);
    border: 1px solid var(--color-success-border);
    color: var(--color-accent);
}

.form-status.error {
    display: block;
    background: var(--color-error-dim);
    border: 1px solid var(--color-error-border);
    color: var(--color-error);
}

/* ---- Footer ---- */
.footer {
    background: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: 2.5rem 0;
}

.footer__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
}

.footer__left {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.footer__copy {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

.footer__links {
    display: flex;
    gap: 1.5rem;
}

.footer__link {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
    padding: 0.625rem 0;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
}

.footer__link:hover { color: var(--color-accent); }

.footer__social {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer__social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    border: 1px solid var(--color-border);
    color: var(--color-text-secondary);
    transition: color var(--transition-fast),
                border-color var(--transition-fast),
                transform var(--transition-fast);
}

.footer__social-link:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.footer__heart {
    font-size: 0.75rem;
    color: var(--color-text-tertiary);
}

.footer__heart span { color: var(--color-accent); }

/* ---- Responsive Shared ---- */
@media (max-width: 768px) {
    .menu-toggle { display: flex; }

    .nav {
        transition: opacity var(--transition-smooth), visibility var(--transition-smooth);
    }

    .nav.open { opacity: 1; visibility: visible; }

    /* Mobile Nav-Links: min 44px Touch-Target (WCAG 2.5.8) */
    .nav__link {
        font-size: 1.5rem;
        font-weight: 600;
        padding: 0.5rem 1rem;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }

    .nav__cta {
        padding: 0.75rem 1.5rem;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }

    .form-row { grid-template-columns: 1fr; }

    .footer__inner { flex-direction: column; text-align: center; }
    .footer__left { flex-direction: column; }
    .footer__links { flex-wrap: wrap; justify-content: center; }
}

/* ---- Print Shared ---- */
@media print {
    .header { position: static; background: none; }
    .menu-toggle { display: none; }
    .footer { background: #fff; border-color: #ccc; }
    .nav__cta { background: #000; color: #fff; }
}