/* ============================================
   RAO Architektur — Stylesheet
   Streng, minimalistisch, schwarz/weiss
   ============================================ */

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

:root {
    --schwarz: #000000;
    --weiss: #ffffff;
    --grau-hell: #f5f5f5;
    --grau-mittel: #888888;
    --grau-dunkel: #333333;
    --schrift-gross: clamp(2.5rem, 5vw, 4rem);
    --schrift-titel: clamp(1.5rem, 3vw, 2rem);
    --schrift-normal: 1rem;
    --schrift-klein: 0.875rem;
    --abstand-section: clamp(4rem, 10vw, 8rem);
    --abstand-element: 2rem;
    --max-breite: 1200px;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
    font-size: var(--schrift-normal);
    line-height: 1.6;
    color: var(--schwarz);
    background-color: var(--weiss);
}

/* Typography */
h1, h2, h3, h4 {
    font-weight: 400;
    line-height: 1.2;
    letter-spacing: 0.02em;
}

h1 {
    font-size: var(--schrift-gross);
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

h2 {
    font-size: var(--schrift-titel);
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

h3 {
    font-size: 1.125rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--schwarz);
    text-decoration: none;
}

/* Container */
.container {
    max-width: var(--max-breite);
    margin: 0 auto;
    padding: 0 2rem;
}

/* ============================================
   Navigation
   ============================================ */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--weiss);
    border-bottom: 1px solid var(--schwarz);
}

.nav-container {
    max-width: var(--max-breite);
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 0.875rem;
    font-weight: 400;
    letter-spacing: 0.15em;
    text-transform: uppercase;
}

/* Sprachauswahl */
.lang-switch {
    display: flex;
    gap: 0.25rem;
}

.lang-btn {
    background: none;
    border: 1px solid transparent;
    padding: 0.25rem 0.5rem;
    font-family: inherit;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    cursor: pointer;
    transition: all 0.2s ease;
    color: var(--grau-mittel);
}

.lang-btn:hover {
    color: var(--schwarz);
}

.lang-btn.active {
    color: var(--schwarz);
    border-color: var(--schwarz);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2.5rem;
}

.nav-link {
    font-size: var(--schrift-klein);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--schwarz);
    transition: width 0.3s ease;
}

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

/* Hamburger Menu */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--schwarz);
    position: relative;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--schwarz);
    left: 0;
    transition: transform 0.3s ease;
}

.hamburger::before {
    top: -7px;
}

.hamburger::after {
    bottom: -7px;
}

/* Nav Toggle Active State */
.nav-toggle.active .hamburger {
    background-color: transparent;
}

.nav-toggle.active .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.nav-toggle.active .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem 2rem 4rem;
    border-bottom: 1px solid var(--schwarz);
}

.hero-content {
    max-width: 800px;
    display: block;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.hero-content:hover {
    opacity: 0.7;
}

.hero-subtitle {
    font-size: var(--schrift-klein);
    text-transform: uppercase;
    letter-spacing: 0.2em;
    margin-top: 1.5rem;
    color: var(--grau-mittel);
}

/* ============================================
   Sections
   ============================================ */
.section {
    padding: var(--abstand-section) 0;
}

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

.section-title {
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--schwarz);
}

/* ============================================
   Projekte
   ============================================ */
.projekt {
    margin-bottom: 5rem;
    padding-bottom: 5rem;
    border-bottom: 1px solid var(--grau-mittel);
}

.projekt:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.projekt-header {
    margin-bottom: 1.5rem;
}

.projekt-titel {
    margin-bottom: 0.5rem;
}

.projekt-info {
    font-size: var(--schrift-klein);
    color: var(--grau-mittel);
    letter-spacing: 0.05em;
}

.projekt-beschreibung {
    max-width: 800px;
    margin-bottom: 2rem;
}

.projekt-beschreibung p {
    color: var(--grau-dunkel);
}

/* Projekt Galerie */
.projekt-galerie {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: 1rem;
}

.bild-quer:nth-child(1) {
    grid-column: span 7;
}

.bild-quer:nth-child(2) {
    grid-column: span 5;
}

.bild-hoch {
    grid-column: span 4;
}

.projekt-galerie figure {
    margin: 0;
}

/* Placeholder Images */
.placeholder-img {
    background-color: #d0d0d0;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1rem;
    position: relative;
    overflow: hidden;
}

.placeholder-img[data-format="quer"] {
    aspect-ratio: 3 / 2;
}

.placeholder-img[data-format="hoch"] {
    aspect-ratio: 2 / 3;
}

.placeholder-img[data-format="portrait"] {
    aspect-ratio: 3 / 4;
}

.placeholder-img span {
    font-size: var(--schrift-klein);
    color: var(--grau-dunkel);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Bild-Wrapper für echte Bilder */
.bild-wrapper {
    width: 100%;
    height: 100%;
}

.bild-wrapper img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: center;
    display: block;
}

.bild-quer .bild-wrapper {
    aspect-ratio: 3 / 2;
    height: auto;
}

.bild-hoch .bild-wrapper {
    aspect-ratio: 2 / 3;
    height: auto;
}

/* Bild-Credit */
.bild-credit {
    font-size: 0.7rem;
    color: var(--grau-mittel);
    margin-top: 0.35rem;
    letter-spacing: 0.02em;
}

/* ============================================
   Über Mich
   ============================================ */
.ueber-mich-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.portrait-container {
    position: sticky;
    top: 6rem;
}

.portrait {
    width: 100%;
    max-width: 300px;
}

.ueber-mich-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
}

.ueber-mich-block h3 {
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--schwarz);
}

.werdegang-liste,
.projekt-liste {
    list-style: none;
}

.werdegang-liste li,
.projekt-liste li {
    padding: 0.5rem 0;
    border-bottom: 1px solid #e0e0e0;
    font-size: var(--schrift-klein);
}

.projekt-liste a {
    color: var(--schwarz);
    text-decoration: underline;
    text-decoration-color: var(--grau-mittel);
    text-underline-offset: 2px;
    transition: text-decoration-color 0.2s ease;
}

.projekt-liste a:hover {
    text-decoration-color: var(--schwarz);
}

.werdegang-liste li:last-child,
.projekt-liste li:last-child {
    border-bottom: none;
}

.jahr {
    display: inline-block;
    width: 120px;
    color: var(--grau-mittel);
}

/* ============================================
   Kontakt
   ============================================ */
.kontakt-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 4rem;
    align-items: start;
}

.kontakt-info {
    font-size: var(--schrift-klein);
    line-height: 1.8;
}

.kontakt-info p {
    margin-bottom: 1.5rem;
}

/* Form Styles */
.kontakt-form {
    max-width: 600px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: var(--schrift-klein);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--schwarz);
    background-color: var(--weiss);
    font-family: inherit;
    font-size: var(--schrift-normal);
    transition: border-color 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--grau-mittel);
}

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

/* Honeypot (versteckt) */
.honeypot {
    position: absolute;
    left: -9999px;
    opacity: 0;
    pointer-events: none;
}

/* Captcha */
.captcha-group label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

#captcha-frage {
    font-weight: 600;
    color: var(--schwarz);
}

/* Submit Button */
.btn-submit {
    display: inline-block;
    padding: 1rem 2.5rem;
    background-color: var(--schwarz);
    color: var(--weiss);
    border: 1px solid var(--schwarz);
    font-family: inherit;
    font-size: var(--schrift-klein);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-submit:hover {
    background-color: var(--weiss);
    color: var(--schwarz);
}

/* Form Status */
.form-status {
    margin-top: 1.5rem;
    padding: 1rem;
    font-size: var(--schrift-klein);
    display: none;
}

.form-status.success {
    display: block;
    background-color: #f0f0f0;
    border: 1px solid var(--schwarz);
}

.form-status.error {
    display: block;
    background-color: #fff0f0;
    border: 1px solid #cc0000;
    color: #cc0000;
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 2rem 0;
    border-top: 1px solid var(--schwarz);
    text-align: center;
}

.footer p {
    font-size: var(--schrift-klein);
    color: var(--grau-mittel);
    margin: 0;
}

/* ============================================
   Responsive Design
   ============================================ */

/* Tablet */
@media (max-width: 1024px) {
    .ueber-mich-grid,
    .kontakt-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .portrait-container {
        position: static;
    }

    .portrait {
        max-width: 250px;
    }

    .projekt-galerie {
        grid-template-columns: repeat(6, 1fr);
    }

    .bild-quer:nth-child(1) {
        grid-column: span 6;
    }

    .bild-quer:nth-child(2) {
        grid-column: span 6;
    }

    .bild-hoch {
        grid-column: span 3;
        grid-column-start: 2;
    }
}

/* Mobile */
@media (max-width: 768px) {
    .nav-toggle {
        display: block;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        background-color: var(--weiss);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.3s ease;
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-link {
        font-size: 1.25rem;
    }

    .hero {
        min-height: 80vh;
    }

    h1 {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.25rem;
    }

    .projekt-galerie {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }

    .bild-quer:nth-child(1),
    .bild-quer:nth-child(2),
    .bild-hoch {
        grid-column: span 1;
    }

    .bild-hoch {
        max-width: 70%;
    }

    .container {
        padding: 0 1.5rem;
    }

    .jahr {
        display: block;
        width: auto;
        margin-bottom: 0.25rem;
    }

    .kontakt-form {
        max-width: 100%;
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
        letter-spacing: 0.05em;
    }

    .hero-subtitle {
        font-size: 0.75rem;
    }

    .logo {
        font-size: 0.75rem;
    }

    .container {
        padding: 0 1rem;
    }

    .projekt {
        margin-bottom: 3rem;
        padding-bottom: 3rem;
    }

    .btn-submit {
        width: 100%;
    }
}