/* Grundlayout & Reset */
*,
*::before,
*::after {
    box-sizing: border-box;
}

:root {
    --color-primary: #0d6efd;
    --color-primary-dark: #0a58ca;
    --color-primary-light: #e7f1ff;
    --color-accent: #00b4d8;
    --color-bg: #f5f7fb;
    --color-text: #1f2933;
    --color-text-muted: #6b7280;
    --color-border: #d1d5db;
    --shadow-soft: 0 10px 30px rgba(15, 23, 42, 0.12);
    --shadow-subtle: 0 4px 15px rgba(15, 23, 42, 0.08);
    --radius-lg: 18px;
    --radius-md: 12px;
    --radius-sm: 8px;
    --transition-fast: 0.2s ease;
    --transition: 0.3s ease;
    scroll-behavior: smooth;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    color: var(--color-text);
    background: radial-gradient(circle at top, #e0f2ff 0, #f5f7fb 45%, #ffffff 100%);
    line-height: 1.6;
}

/* Layout Helfer */
.container {
    width: min(1120px, 100% - 2rem);
    margin: 0 auto;
}

.section {
    padding: 5rem 0;
}

.section-alt {
    background: linear-gradient(135deg, rgba(13,110,253,0.06), rgba(0,180,216,0.05));
}

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-header h2 {
    font-size: 2.1rem;
    margin-bottom: 0.75rem;
}

.section-header p {
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.35rem;
    padding: 0.75rem 1.4rem;
    border-radius: 999px;
    border: 1px solid transparent;
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: background var(--transition-fast), color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast), border-color var(--transition-fast);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    border-color: transparent;
    color: #fff;
    box-shadow: 0 12px 30px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 16px 35px rgba(37, 99, 235, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary);
    border-color: rgba(13, 110, 253, 0.3);
    backdrop-filter: blur(6px);
}

.btn-outline:hover {
    background: var(--color-primary-light);
    border-color: var(--color-primary);
}

.btn-block {
    width: 100%;
}

/* Header & Navigation */
.header {
    position: sticky;
    top: 0;
    z-index: 50;
    backdrop-filter: blur(14px);
    background: linear-gradient(to bottom, rgba(255,255,255,0.92), rgba(255,255,255,0.8));
    border-bottom: 1px solid rgba(209, 213, 219, 0.7);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-block: 0.7rem;
}

.logo-icon {
    width: 38px;
    height: 38px;
    border-radius: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.6rem;
}


.logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
}

.logo-main {
    font-weight: 700;
    font-size: 1.05rem;
}

.logo-sub {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

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

.nav-links {
    display: flex;
    list-style: none;
    padding: 0;
    margin: 0;
    gap: 1rem;
}

.nav-links a {
    text-decoration: none;
    color: var(--color-text);
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.45rem 0.2rem;
    position: relative;
}

.nav-links a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: 0.15rem;
    width: 0;
    height: 2px;
    border-radius: 999px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-accent));
    transition: width var(--transition-fast);
}

.nav-links a:hover::after,
.nav-links a.active::after {
    width: 100%;
}

.nav-cta {
    display: inline-flex;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 0.25rem;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.35rem;
    border-radius: 999px;
}

.nav-toggle span {
    width: 22px;
    height: 2px;
    border-radius: 999px;
    background: var(--color-text);
    transition: transform var(--transition-fast), opacity var(--transition-fast), width var(--transition-fast);
}

/* Hero */
.hero {
    position: relative;
    padding: 5.5rem 0 4.5rem;
    overflow: hidden;
    color: #0b1220;
}

.hero::before {
    content: "";
    position: absolute;
    inset: -40%;
    background:
        radial-gradient(circle at 10% 20%, rgba(56, 189, 248, 0.25), transparent 55%),
        radial-gradient(circle at 90% 10%, rgba(37, 99, 235, 0.25), transparent 55%);
    opacity: 0.9;
    pointer-events: none;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background-image: radial-gradient(circle at 20% 80%, rgba(56,189,248,0.25), transparent 50%),
                      radial-gradient(circle at 60% 0%, rgba(59,130,246,0.3), transparent 55%);
    mix-blend-mode: screen;
    pointer-events: none;
}

.hero-content {
    position: relative;
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.4fr);
    gap: 3rem;
    align-items: center;
}

.hero-text h1 {
    font-size: clamp(2.4rem, 4vw, 3rem);
    line-height: 1.15;
    margin-bottom: 1rem;
}

.hero-text h1 span {
    color: var(--color-primary);
    text-shadow: 0 14px 30px rgba(15, 23, 42, 0.25);
}

.hero-text p {
    color: var(--color-text-muted);
    max-width: 480px;
    margin-bottom: 1.75rem;
}

.hero-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.9rem;
    margin-bottom: 2rem;
}

.hero-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 1.75rem;
    font-size: 0.9rem;
}

.hero-meta strong {
    display: block;
    font-size: 1.2rem;
}

.hero-meta span {
    color: var(--color-text-muted);
}

/* Hero Card */
.hero-card {
    background: rgba(255, 255, 255, 0.96);
    border-radius: 24px;
    padding: 1.7rem 1.7rem 1.5rem;
    box-shadow: var(--shadow-soft);
    position: relative;
    backdrop-filter: blur(16px);
    border: 1px solid rgba(255,255,255,0.7);
}

.hero-card::before {
    content: "";
    position: absolute;
    inset: -1px;
    border-radius: inherit;
    background: linear-gradient(145deg, rgba(96,165,250,0.55), rgba(45,212,191,0.45), rgba(129,140,248,0.55));
    opacity: 0.7;
    z-index: -1;
}

.hero-card h2 {
    margin-top: 0;
    margin-bottom: 0.5rem;
}

.hero-card p {
    margin-top: 0;
    color: var(--color-text-muted);
    font-size: 0.95rem;
}

/* Forms */
form {
    margin-top: 1rem;
}

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

.form-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    margin-bottom: 0.9rem;
}

.form-group label {
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    border-radius: 11px;
    border: 1px solid var(--color-border);
    padding: 0.55rem 0.7rem;
    font: inherit;
    outline: none;
    background: #f9fafb;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), transform var(--transition-fast);
}

.form-group textarea {
    resize: vertical;
    min-height: 110px;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 1px rgba(59,130,246,0.4), 0 8px 24px rgba(15,23,42,0.15);
    background: #fff;
    transform: translateY(-1px);
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: #ef4444;
    box-shadow: 0 0 0 1px rgba(248,113,113,0.4);
}

.error-message {
    font-size: 0.8rem;
    color: #b91c1c;
    min-height: 0.9rem;
    margin-top: 0.15rem;
}

.form-note {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

.form-success {
    font-size: 0.85rem;
    color: #166534;
    background: #dcfce7;
    border-radius: 10px;
    padding: 0.5rem 0.75rem;
    margin-top: 0.7rem;
}

.checkbox-group {
    flex-direction: row;
    align-items: flex-start;
    gap: 0.4rem;
    font-size: 0.85rem;
}

.checkbox-group input {
    margin-top: 0.2rem;
}

/* About Section */
.section-grid {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
    gap: 3rem;
    align-items: center;
}

.section-text h2 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
}

.section-text p {
    color: var(--color-text-muted);
}

.section-text p + p {
    margin-top: 0.75rem;
}

.about-highlights {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.4rem;
    margin-top: 1.9rem;
}

.about-item {
    background: #fff;
    border-radius: var(--radius-md);
    padding: 1rem 1.1rem;
    box-shadow: var(--shadow-subtle);
    border: 1px solid rgba(226, 232, 240, 0.9);
}

.about-item h3 {
    margin-top: 0;
    margin-bottom: 0.4rem;
    font-size: 1rem;
}

.about-item p {
    margin: 0;
    font-size: 0.9rem;
}

.section-media {
    position: relative;
    min-height: 420px;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    grid-template-rows: 1fr 1fr;
    gap: 1rem;
}

.about-image {
    position: relative;
    border-radius: 24px;
    background-size: cover;
    background-position: center;
    box-shadow: var(--shadow-soft);
    overflow: hidden;
}

/* Großes Hochformat-Bild (links, über beide Reihen) */
.about-image.main {
    grid-column: 1;
    grid-row: 1 / 3;
    background-image: url("/../img/A_hochkant.jpeg");
}

.about-image.secondary {
    grid-column: 2;
    grid-row: 1;
    background-image: url("/../img/B_Brunnen.jpeg");
}

.about-image.tertiary {
    grid-column: 2;
    grid-row: 2;
    background-image: url("/../img/C_Deckel.jpeg");
}

.about-badge {
    position: absolute;
    left: 0.5rem;
    bottom: 0.3rem;
    background: rgba(15,23,42,0.93);
    color: #e5f0ff;
    padding: 0.65rem 0.85rem;
    border-radius: 999px;
    font-size: 0.75rem;
    display: inline-flex;
    flex-direction: column;
    gap: 0.1rem;
    box-shadow: 0 14px 35px rgba(15,23,42,0.6);
    z-index: 10;
}

.badge-main {
    font-weight: 700;
}

.badge-sub {
    font-size: 0.7rem;
    opacity: 0.9;
}

/* Hover-Effekte für Bilder */
.about-image::after {
    content: "";
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, rgba(13,110,253,0.15), transparent);
    opacity: 0;
    transition: opacity var(--transition);
}

.about-image:hover::after {
    opacity: 1;
}

/* Responsive Anpassungen */
@media (max-width: 1024px) {
    .section-media {
        min-height: 380px;
        gap: 0.85rem;
    }
}

@media (max-width: 768px) {
    .section-media {
        min-height: 350px;
        grid-template-columns: 1fr 1fr;
        grid-template-rows: 1fr 1fr;
        gap: 0.75rem;
    }

    .about-badge {
        left: 0.35rem;
        bottom: 0.75rem;
        padding: 0.5rem 0.7rem;
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .section-media {
        min-height: 300px;
        grid-template-columns: 1fr;
        grid-template-rows: 1.5fr 1fr 1fr;
        gap: 0.6rem;
    }

    .about-image.main {
        grid-column: 1;
        grid-row: 1;
    }

    .about-image.secondary {
        grid-column: 1;
        grid-row: 2;
    }

    .about-image.tertiary {
        grid-column: 1;
        grid-row: 3;
    }
}

/* Cards (Services) - 3 oben, 2 unten */
.cards {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.5rem;
    max-width: 1120px;
    margin: 0 auto;
}

.cards .card:nth-child(4) {
    grid-column: 1 / 2;
}

.cards .card:nth-child(5) {
    grid-column: 3 / 4;
}

.card {
    background: #fff;
    border-radius: var(--radius-lg);
    padding: 1.4rem 1.35rem 1.3rem;
    box-shadow: var(--shadow-subtle);
    border: 1px solid rgba(226, 232, 240, 0.9);
    display: flex;
    flex-direction: column;
    gap: 0.6rem;
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.card:hover {
    transform: translateY(-6px);
    box-shadow: 0 18px 40px rgba(15,23,42,0.15);
    border-color: rgba(59,130,246,0.5);
}

.card-icon {
    width: 40px;
    height: 40px;
    border-radius: 16px;
    background: radial-gradient(circle at 30% 10%, #fff, #dbeafe);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.35rem;
    margin-bottom: 0.4rem;
}

.card h3 {
    margin: 0;
    font-size: 1.1rem;
}

.card p {
    margin: 0;
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.card ul {
    list-style: none;
    padding-left: 0;
    margin: 0.4rem 0 0;
    font-size: 0.85rem;
    color: var(--color-text);
}

.card ul li {
    position: relative;
    padding-left: 1.1rem;
    line-height: 1.6;
}

.card ul li::before {
    content: "•";
    position: absolute;
    left: 0;
    top: 0;
    color: var(--color-accent);
    font-weight: bold;
    font-size: 1.3em;
    line-height: 1;
}

/* Projects / References */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1.6rem;
}

.project-card {
    background: #fff;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-subtle);
    border: 1px solid rgba(226, 232, 240, 0.9);
    display: flex;
    flex-direction: column;
}

.project-image {
    height: 180px;
    background-size: cover;
    background-position: center;
}

.project-1 {
    background-image: linear-gradient(135deg, rgba(15,23,42,0.15), rgba(15,23,42,0.3)), url("img/A_hochkant.jpeg");
}

.project-2 {
    background-image: linear-gradient(135deg, rgba(15,23,42,0.2), rgba(15,23,42,0.35)), url("img/B_Brunnen.jpeg");
}

.project-3 {
    background-image: linear-gradient(135deg, rgba(15,23,42,0.2), rgba(15,23,42,0.35)), url("img/C_Deckel.jpeg");
}

.project-content {
    padding: 1.1rem 1.2rem 1.1rem;
    font-size: 0.9rem;
}

.project-content h3 {
    margin-top: 0;
    margin-bottom: 0.4rem;
    font-size: 1.05rem;
}

.project-content p {
    margin: 0;
    color: var(--color-text-muted);
}

.project-content ul {
    list-style: none;
    padding: 0;
    margin: 0.7rem 0 0;
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem 0.8rem;
}

.project-content li {
    font-size: 0.85rem;
    color: var(--color-text);
}

.testimonial {
    margin-top: 2.5rem;
    text-align: center;
    max-width: 720px;
    margin-left: auto;
    margin-right: auto;
}

.testimonial blockquote {
    font-style: italic;
    margin: 0;
    font-size: 1rem;
}

.testimonial-author {
    margin-top: 0.6rem;
    font-size: 0.9rem;
    color: var(--color-text-muted);
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: minmax(0, 3fr) minmax(0, 3fr);
    gap: 3rem;
    align-items: flex-start;
}

.contact-info {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.contact-info h3 {
    margin-top: 0;
    margin-bottom: 0.4rem;
}

.contact-info p {
    margin: 0;
    color: var(--color-text-muted);
}

.contact-form-wrapper {
    background: #fff;
    padding: 1.6rem 1.5rem 1.4rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-soft);
    border: 1px solid rgba(226, 232, 240, 0.9);
}

/* Footer */
.footer {
    background: #020617;
    color: #e5e7eb;
    padding-top: 3rem;
    margin-top: 3rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: minmax(0, 2.2fr) repeat(3, minmax(0, 1.3fr));
    gap: 2rem;
    padding-bottom: 2rem;
}

.footer-col h3 {
    margin-top: 0;
    font-size: 0.95rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: #9ca3af;
}

.footer-col p {
    margin: 0;
    font-size: 0.9rem;
    color: #9ca3af;
}

.footer-col ul {
    list-style: none;
    padding: 0;
    margin: 0.3rem 0 0;
    font-size: 0.9rem;
}

.footer-col li + li {
    margin-top: 0.25rem;
}

.footer a {
    color: #e5e7eb;
    text-decoration: none;
}

.footer a:hover {
    color: #93c5fd;
}

.footer-bottom {
    border-top: 1px solid rgba(31, 41, 55, 0.9);
    padding: 0.9rem 0;
    margin-top: 0.5rem;
    font-size: 0.8rem;
    color: #6b7280;
}

.footer-bottom-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.back-to-top {
    padding: 0.35rem 0.75rem;
    border-radius: 999px;
    border: 1px solid rgba(148, 163, 184, 0.8);
    font-size: 0.75rem;
    text-decoration: none;
}

/* Utilities */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.animate-on-scroll {
    opacity: 0;
}

.animate-on-scroll.is-visible {
    animation: fadeInUp 0.55s ease forwards;
}

/* Responsive Styles */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: minmax(0, 1.15fr);
    }

    .hero-card {
        max-width: 420px;
        margin-inline: auto;
    }

    .section-grid {
        grid-template-columns: minmax(0, 1.1fr);
    }

    .section-media {
        order: -1;
        margin-bottom: 1.3rem;
    }

    .about-highlights {
        grid-template-columns: minmax(0, 1fr);
    }

    .cards {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    
    .cards .card:nth-child(4),
    .cards .card:nth-child(5) {
        grid-column: auto;
    }

    .projects-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .footer-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .nav-cta {
        display: none;
    }
}

@media (max-width: 768px) {
    .nav {
        position: fixed;
        inset: 60px 1rem auto 1rem;
        background: rgba(15,23,42,0.98);
        border-radius: 18px;
        padding: 0.8rem 1rem 1rem;
        flex-direction: column;
        align-items: stretch;
        gap: 0.8rem;
        transform: translateY(-130%);
        opacity: 0;
        pointer-events: none;
        transition: transform var(--transition-fast), opacity var(--transition-fast);
        box-shadow: 0 18px 40px rgba(15,23,42,0.65);
    }

    .nav.open {
        transform: translateY(0);
        opacity: 1;
        pointer-events: auto;
    }

    .nav-links {
        flex-direction: column;
        gap: 0.3rem;
    }

    .nav-links a {
        color: #e5e7eb;
        padding-block: 0.35rem;
    }

    .nav-links a::after {
        background: linear-gradient(90deg, #93c5fd, #22d3ee);
        bottom: 0;
        height: 1.5px;
    }

    .nav-toggle {
        display: flex;
    }

    .nav.open + .nav-toggle span:nth-child(1) {
        transform: translateY(6px) rotate(45deg);
    }
    .nav.open + .nav-toggle span:nth-child(2) {
        opacity: 0;
    }
    .nav.open + .nav-toggle span:nth-child(3) {
        transform: translateY(-6px) rotate(-45deg);
        width: 22px;
    }

    .hero {
        padding-top: 4.5rem;
    }

    .hero-content {
        gap: 2.5rem;
    }

    .hero-text {
        text-align: left;
    }

    .hero-actions {
        justify-content: flex-start;
    }

    .hero-meta {
        gap: 1.25rem;
    }

    .section {
        padding: 3.7rem 0;
    }

    .cards {
        grid-template-columns: minmax(0, 1fr);
    }

    .projects-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .contact-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .contact-info {
        grid-template-columns: minmax(0, 1fr);
    }

    .footer-grid {
        grid-template-columns: minmax(0, 1fr);
    }

    .footer-bottom-inner {
        flex-direction: column-reverse;
        align-items: flex-start;
        gap: 0.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        width: min(100% - 1.5rem, 100%);
    }

    .hero-text h1 {
        font-size: 2.15rem;
    }

    .hero-card {
        padding: 1.35rem 1.25rem 1.2rem;
    }

    .form-row {
        flex-direction: column;
    }
}