/* =============================================
   EM Fassaden — Redesign
   Aesthetic: Refined Craftsmanship
   Fonts: Instrument Serif + Plus Jakarta Sans
   ============================================= */

:root {
    --navy: #0a2540;
    --primary: #014D8C;
    --primary-mid: #1a6ab5;
    --primary-light: #e8f0f8;
    --accent: #019744;
    --accent-dark: #017a36;
    --accent-glow: rgba(1, 151, 68, 0.12);

    --text: #1a1a2e;
    --text-mid: #4a5568;
    --text-light: #718096;

    --surface: #ffffff;
    --surface-warm: #f9f7f4;
    --border: #e2e8f0;

    --font-display: 'Instrument Serif', Georgia, 'Times New Roman', serif;
    --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    --radius: 12px;
    --radius-lg: 20px;
    --shadow-sm: 0 1px 3px rgba(10,37,64,0.06);
    --shadow-md: 0 4px 20px rgba(10,37,64,0.08);
    --shadow-lg: 0 12px 40px rgba(10,37,64,0.12);
    --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    color: var(--text);
    background: var(--surface);
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

a {
    color: inherit;
    text-decoration: none;
}

img {
    max-width: 100%;
    height: auto;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 2rem;
}

.hide-mobile { display: inline; }

/* =============================================
   Scroll Reveal
   ============================================= */
[data-reveal] {
    opacity: 0;
    transform: translateY(32px);
    transition: opacity 0.7s cubic-bezier(0.22, 1, 0.36, 1),
                transform 0.7s cubic-bezier(0.22, 1, 0.36, 1);
}

[data-reveal].revealed {
    opacity: 1;
    transform: translateY(0);
}

[data-reveal-delay="1"] { transition-delay: 0.12s; }
[data-reveal-delay="2"] { transition-delay: 0.24s; }
[data-reveal-delay="3"] { transition-delay: 0.36s; }

/* =============================================
   Navigation
   ============================================= */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    transition: background var(--transition), box-shadow var(--transition);
}

.nav-inner {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 76px;
}

.nav-logo img {
    height: 48px;
    width: auto;
    transition: filter var(--transition);
}

.nav:not(.scrolled) .nav-logo img {
    filter: brightness(0) invert(1);
}

.nav-menu {
    list-style: none;
    display: flex;
    align-items: center;
    gap: 2.25rem;
}

.nav-menu a {
    font-weight: 500;
    font-size: 0.9rem;
    letter-spacing: 0.01em;
    color: rgba(255,255,255,0.85);
    transition: color var(--transition);
    position: relative;
}

.nav.scrolled .nav-menu a {
    color: var(--text-mid);
}

.nav-menu a:not(.nav-cta):hover {
    color: #fff;
}

.nav.scrolled .nav-menu a:not(.nav-cta):hover {
    color: var(--text);
}

.nav-menu a:not(.nav-cta)::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width var(--transition);
}

.nav-menu a:not(.nav-cta):hover::after {
    width: 100%;
}

.nav-cta {
    background: var(--accent);
    color: #fff !important;
    padding: 0.55rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    transition: background var(--transition), transform var(--transition) !important;
}

.nav-cta:hover {
    background: var(--accent-dark);
    transform: translateY(-1px);
}

.nav.scrolled {
    background: rgba(255,255,255,0.96);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 24px rgba(10,37,64,0.07);
}

/* Hamburger */
.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
    flex-direction: column;
    gap: 5px;
    z-index: 10;
}

.nav-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background: #fff;
    transition: var(--transition);
    transform-origin: center;
}

.nav.scrolled .nav-toggle span {
    background: var(--text);
}

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

/* =============================================
   Buttons
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.9rem 2.25rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 0.95rem;
    font-family: var(--font-body);
    border: none;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.01em;
}

.btn-primary {
    background: var(--primary);
    color: #fff;
}

.btn-primary:hover {
    background: var(--navy);
    box-shadow: 0 6px 20px rgba(1,77,140,0.25);
    transform: translateY(-2px);
}

.btn-accent {
    background: var(--accent);
    color: #fff;
}

.btn-accent:hover {
    background: var(--accent-dark);
    box-shadow: 0 6px 20px rgba(1,151,68,0.3);
    transform: translateY(-2px);
}

.btn-full {
    width: 100%;
}

/* =============================================
   Hero
   ============================================= */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(160deg, var(--navy) 0%, var(--primary) 50%, #0b5e9e 100%);
    overflow: hidden;
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255,255,255,0.025) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255,255,255,0.025) 1px, transparent 1px);
    background-size: 64px 64px;
}

.hero-glow {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 60% 50% at 15% 80%, rgba(1,151,68,0.18) 0%, transparent 70%),
        radial-gradient(ellipse 40% 40% at 85% 20%, rgba(255,255,255,0.06) 0%, transparent 60%),
        radial-gradient(ellipse 50% 50% at 50% 50%, rgba(1,77,140,0.15) 0%, transparent 70%);
}

.hero-content {
    position: relative;
    z-index: 2;
    color: #fff;
    max-width: 680px;
    padding: 6rem 0 8rem;
}

.hero-label {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.75rem;
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.6);
}

.hero-label-line {
    width: 40px;
    height: 2px;
    background: var(--accent);
}

.hero h1 {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5.5vw, 4.25rem);
    font-weight: 400;
    line-height: 1.15;
    margin-bottom: 1.5rem;
    letter-spacing: -0.01em;
}

.hero h1 em {
    font-style: italic;
    color: rgba(255,255,255,0.95);
}

.hero-desc {
    font-size: clamp(1rem, 1.8vw, 1.15rem);
    color: rgba(255,255,255,0.7);
    margin-bottom: 2.5rem;
    line-height: 1.8;
}

/* Hero entrance */
[data-hero-anim] {
    opacity: 0;
    transform: translateY(28px);
}

[data-hero-anim]:nth-child(1) { transition: opacity 0.8s 0.2s ease-out, transform 0.8s 0.2s ease-out; }
[data-hero-anim]:nth-child(2) { transition: opacity 0.8s 0.35s ease-out, transform 0.8s 0.35s ease-out; }
[data-hero-anim]:nth-child(3) { transition: opacity 0.8s 0.5s ease-out, transform 0.8s 0.5s ease-out; }
[data-hero-anim]:nth-child(4) { transition: opacity 0.8s 0.65s ease-out, transform 0.8s 0.65s ease-out; }

body.loaded [data-hero-anim] {
    opacity: 1;
    transform: translateY(0);
}

.hero-bottom {
    position: absolute;
    bottom: -1px;
    left: 0;
    right: 0;
    z-index: 3;
    line-height: 0;
}

.hero-bottom svg {
    width: 100%;
    height: 60px;
}

/* =============================================
   Sections
   ============================================= */
.section {
    padding: 6rem 0;
}

.section-warm {
    background: var(--surface-warm);
}

/* =============================================
   Partners / Markenpartner
   ============================================= */
.partners {
    padding: 3rem 0;
    background: var(--surface-warm);
    border-top: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
}

.partners-label {
    display: block;
    text-align: center;
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-light);
    margin-bottom: 1.75rem;
}

.partners-strip {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 3rem;
    flex-wrap: wrap;
}

.partner-logo {
    flex-shrink: 0;
    display: block;
    filter: grayscale(100%) opacity(0.45);
    transition: filter 0.4s ease, transform 0.4s ease;
}

.partner-logo:hover {
    filter: grayscale(0%) opacity(1);
    transform: scale(1.08);
}

.partner-logo img {
    display: block;
    height: 40px;
    width: auto;
}

@media (max-width: 768px) {
    .partners-strip {
        gap: 2rem 2.5rem;
    }

    .partner-logo {
        height: 30px;
    }
}

/* =============================================
   Section Headers
   ============================================= */
.section-header {
    text-align: center;
    margin-bottom: 3.5rem;
}

.section-label {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.78rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    color: var(--accent);
    margin-bottom: 0.75rem;
}

.section-label::before,
.section-label::after {
    content: '';
    width: 20px;
    height: 1.5px;
    background: var(--accent);
    opacity: 0.4;
}

.section-label-light {
    color: rgba(255,255,255,0.5);
}

.section-label-light::before,
.section-label-light::after {
    background: rgba(255,255,255,0.3);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 3.5vw, 2.75rem);
    font-weight: 400;
    color: var(--navy);
    line-height: 1.2;
}

/* =============================================
   Services / Leistungen
   ============================================= */
.services-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.75rem;
}

.service-card {
    position: relative;
    background: var(--surface);
    border-radius: var(--radius-lg);
    padding: 2.25rem;
    border: 1px solid var(--border);
    transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
    overflow: hidden;
}

.service-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent), var(--primary-mid));
    opacity: 0;
    transition: opacity var(--transition);
}

.service-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: transparent;
}

.service-card:hover::before {
    opacity: 1;
}

.service-icon {
    width: 56px;
    height: 56px;
    border-radius: 14px;
    background: var(--accent-glow);
    color: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.service-card h3 {
    font-family: var(--font-body);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--navy);
    margin-bottom: 0.75rem;
}

.service-card p {
    color: var(--text-mid);
    font-size: 0.92rem;
    line-height: 1.75;
}

.service-number {
    position: absolute;
    bottom: 1.25rem;
    right: 1.5rem;
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--border);
    line-height: 1;
    transition: color var(--transition);
}

.service-card:hover .service-number {
    color: var(--accent-glow);
}

/* =============================================
   About / Über uns
   ============================================= */
.about-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text p {
    color: var(--text-mid);
    line-height: 1.85;
    margin-bottom: 1.25rem;
    font-size: 0.95rem;
}

.about-text strong {
    color: var(--text);
}

.about-stats {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.stat-card {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 1.5rem 1.75rem;
    border-left: 3px solid var(--accent);
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: baseline;
    gap: 0.15rem;
    flex-wrap: wrap;
    transition: box-shadow var(--transition), transform var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(4px);
}

.stat-number {
    font-family: var(--font-display);
    font-size: 2.5rem;
    color: var(--primary);
    line-height: 1;
}

.stat-suffix {
    font-family: var(--font-display);
    font-size: 1.5rem;
    color: var(--accent);
}

.stat-icon {
    color: var(--primary);
    margin-right: 0.5rem;
}

.stat-text {
    font-family: var(--font-display);
    font-size: 2rem;
    color: var(--primary);
    line-height: 1;
}

.stat-label {
    width: 100%;
    margin-top: 0.35rem;
    font-size: 0.82rem;
    color: var(--text-light);
    letter-spacing: 0.02em;
}

/* =============================================
   References / Referenzen
   ============================================= */
.references-placeholder {
    position: relative;
    border-radius: var(--radius-lg);
    overflow: hidden;
    min-height: 300px;
}

.ref-pattern {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(2, 140px);
    gap: 6px;
}

.ref-block {
    background: var(--surface-warm);
    border-radius: 8px;
}

.ref-block:nth-child(1) { background: linear-gradient(135deg, #e8f0f8, #f0f4f8); }
.ref-block:nth-child(2) { background: linear-gradient(135deg, #f0f4f8, #e8f0f8); grid-row: span 2; }
.ref-block:nth-child(3) { background: linear-gradient(135deg, #e8f0f8, var(--surface-warm)); }
.ref-block:nth-child(4) { background: linear-gradient(135deg, var(--surface-warm), #f0f4f8); }
.ref-block:nth-child(5) { background: linear-gradient(135deg, #f0f4f8, #e8f0f8); }

.ref-overlay {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    background: rgba(255,255,255,0.7);
    backdrop-filter: blur(2px);
    color: var(--text-light);
}

.ref-overlay svg {
    opacity: 0.3;
}

.ref-overlay p {
    font-size: 0.95rem;
    font-weight: 500;
}

/* =============================================
   Contact / Kontakt
   ============================================= */
.section-contact {
    padding: 0;
}

.section-contact .contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.3fr;
    min-height: 600px;
}

.contact-info-panel {
    background: linear-gradient(160deg, var(--navy) 0%, var(--primary) 100%);
    color: #fff;
    padding: 4rem 3rem;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.contact-title {
    font-family: var(--font-display);
    font-size: clamp(1.5rem, 2.5vw, 2rem);
    font-weight: 400;
    margin-bottom: 2.5rem;
    line-height: 1.3;
}

.contact-items {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.contact-item {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.contact-item svg {
    color: var(--accent);
    flex-shrink: 0;
    margin-top: 3px;
}

.contact-item strong {
    display: block;
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: rgba(255,255,255,0.5);
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.contact-item p {
    color: rgba(255,255,255,0.85);
    font-size: 0.92rem;
    line-height: 1.6;
}

.contact-item a {
    color: rgba(255,255,255,0.85);
    transition: color var(--transition);
}

.contact-item a:hover {
    color: #fff;
}

.contact-form-panel {
    padding: 4rem 3rem;
    display: flex;
    align-items: center;
    background: var(--surface-warm);
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.contact-form {
    width: 100%;
    position: relative;
}

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

.form-group {
    margin-bottom: 1.15rem;
}

.form-group label {
    display: block;
    font-size: 0.82rem;
    font-weight: 600;
    margin-bottom: 0.4rem;
    color: var(--text-mid);
    letter-spacing: 0.02em;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.8rem 1rem;
    border: 1.5px solid var(--border);
    border-radius: 10px;
    font-size: 0.92rem;
    font-family: var(--font-body);
    background: var(--surface);
    transition: border-color var(--transition), box-shadow var(--transition);
    color: var(--text);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-light);
    opacity: 0.7;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(1,77,140,0.08);
}

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

.form-status {
    margin-top: 1rem;
    padding: 0.85rem 1rem;
    border-radius: 10px;
    font-size: 0.88rem;
    display: none;
    font-weight: 500;
}

.form-status.success {
    display: block;
    background: #e6f4ed;
    color: #017a36;
    border: 1px solid rgba(1,151,68,0.2);
}

.form-status.error {
    display: block;
    background: #fef2f2;
    color: #c00;
    border: 1px solid rgba(204,0,0,0.15);
}

/* =============================================
   Footer
   ============================================= */
.footer {
    background: var(--navy);
    color: rgba(255,255,255,0.65);
    padding: 4rem 0 0;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 0.6fr;
    gap: 3rem;
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.footer-logo {
    height: 50px;
    width: auto;
    object-fit: contain;
    filter: brightness(0) invert(1);
    opacity: 0.85;
    align-self: flex-start;
}

.footer-brand p {
    font-size: 0.85rem;
    line-height: 1.7;
    color: rgba(255,255,255,0.4);
    max-width: 320px;
}

.footer-col {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    font-size: 0.88rem;
    line-height: 1.65;
}

.footer-col h4 {
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.14em;
    color: var(--accent);
    margin-bottom: 0.75rem;
    font-weight: 700;
}

.footer-col a {
    color: rgba(255,255,255,0.65);
    transition: color var(--transition);
}

.footer-col a:hover {
    color: #fff;
}

.footer-bottom {
    margin-top: 3rem;
    padding: 1.25rem 0;
    border-top: 1px solid rgba(255,255,255,0.07);
    font-size: 0.78rem;
    color: rgba(255,255,255,0.3);
    text-align: center;
}

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 960px) {
    .services-grid {
        grid-template-columns: 1fr;
        max-width: 520px;
        margin: 0 auto;
    }

    .about-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
    }

    .section-contact .contact-grid {
        grid-template-columns: 1fr;
    }

    .contact-info-panel {
        border-radius: var(--radius-lg) var(--radius-lg) 0 0;
        padding: 3rem 2rem;
    }

    .contact-form-panel {
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
        padding: 2.5rem 2rem;
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2.5rem;
        text-align: center;
    }

    .footer-brand {
        align-items: center;
    }

    .footer-brand p {
        max-width: none;
    }

    .footer-logo {
        align-self: center;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 1.25rem;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-menu {
        display: none;
        position: absolute;
        top: 76px;
        left: 0;
        right: 0;
        background: var(--surface);
        flex-direction: column;
        padding: 1.5rem 2rem;
        gap: 0.5rem;
        border-bottom: 1px solid var(--border);
        box-shadow: 0 12px 30px rgba(10,37,64,0.1);
    }

    .nav-menu.active {
        display: flex;
    }

    .nav-menu a {
        color: var(--text) !important;
        padding: 0.65rem 0;
        font-size: 1rem;
    }

    .nav-menu a:not(.nav-cta)::after {
        display: none;
    }

    .nav-cta {
        text-align: center;
        display: inline-block;
        margin-top: 0.5rem;
        width: auto;
        padding: 0.55rem 3rem !important;
    }

    .hero {
        min-height: 90vh;
    }

    .hero-content {
        padding: 5rem 0 6rem;
        text-align: center;
    }

    .hero-content .btn {
        display: inline-block;
    }

    .hide-mobile {
        display: none;
    }

    .section {
        padding: 4rem 0;
    }

    .section-header {
        margin-bottom: 2.5rem;
    }

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

    .ref-pattern {
        grid-template-columns: repeat(2, 1fr);
        grid-template-rows: repeat(2, 100px);
    }

    .ref-block:nth-child(2) {
        grid-row: span 1;
    }

    .ref-block:nth-child(5),
    .ref-block:nth-child(6) {
        display: none;
    }
}