/* BackOffice Solutions - Custom Styles */

/* CSS Variables for Brand Colors */
:root {
    --color-brand: #478AC9;
    --color-brand-hover: #3a7ab8;
    --color-gray-100: #f3f4f6;
    --color-gray-50: #f9fafb;
    --color-gray-600: #4b5563;
    --color-gray-800: #1f2937;
    --color-gray-900: #111827;
    --color-white: #ffffff;
}

/* Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--color-gray-800);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header Styles */
.site-header {
    background-color: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 1s ease-in, backdrop-filter 1s ease-in, box-shadow 1s ease-in;
}

.site-header.visible {
    background-color: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.site-header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.12);
}

.site-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
}

.logo-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.site-logo {
    height: 2rem;
    width: auto;
    transition: transform 0.2s, opacity 0.6s ease-in;
}

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

.site-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-gray-800);
}

.nav-menu {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-link {
    color: var(--color-white);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-link:hover {
    color: var(--color-brand);
}

/* Menü-Text wird dunkel, sobald Header sichtbar ist */
.site-header.visible .nav-link,
.site-header.scrolled .nav-link {
    color: var(--color-gray-800);
}

.site-header.visible .nav-link:hover,
.site-header.scrolled .nav-link:hover {
    color: var(--color-brand);
}

/* Icon-only nav link (Login) */
.nav-link--icon {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.25rem;
    border-radius: 0.375rem;
    transition: background-color 0.2s, color 0.2s;
}

.nav-link--icon:hover {
    background-color: rgba(71, 138, 201, 0.12);
}

/* Hero Section */
.hero-video {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: -1;
}

.hero-overlay {
    background: rgba(0, 0, 0, 0.4);
}

.hero-section {
    position: relative;
    background-color: #000000;
    color: var(--color-white);
    padding: 8rem 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-brand) 0%, #1e40af 100%);
}

.hero-content {
    position: relative;
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
    text-align: center;
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    animation: fadeIn 2s ease-out;
}

.hero-subtitle {
    font-size: 1.5rem;
    color: #d1d5db;
    margin-bottom: 2rem;
    animation: fadeIn 2s ease-out 0.5s backwards;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── Video Intro / Hintergrund ─── */

.video-intro {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
    background: #000000;
    transition: opacity 1.2s ease-out;
}

.video-intro.is-frozen {
    /* Video bleibt als Hintergrund, wird etwas abgedunkelt */
    opacity: 0.4;
    pointer-events: none;
}

.video-intro__video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* Hero Section — transparent für Video-Durchblick */
.hero-section {
    position: relative;
    background-color: transparent;
    color: var(--color-white);
    padding: 8rem 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    z-index: 2;
}

/* Gradient + dunkles Overlay für Lesbarkeit (wird nach Video eingeblendet) */
.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        linear-gradient(135deg, rgba(71, 138, 201, 0.75) 0%, rgba(30, 64, 175, 0.75) 100%),
        rgba(0, 0, 0, 0.5);
    opacity: 0;
    transition: opacity 0.8s ease-in;
}

.hero-gradient.visible {
    opacity: 1;
}

/* Hero Content Hidden (before video ends) */
.hero-content--hidden {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.8s ease-in 0.3s, transform 0.8s ease-out 0.3s;
}

.hero-content--visible {
    opacity: 1;
    transform: translateY(0);
}

/* Buttons */
.btn-primary {
    display: inline-flex;
    align-items: center;
    background-color: var(--color-brand);
    color: var(--color-white);
    padding: 1rem 2rem;
    border-radius: 9999px;
    text-decoration: none;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    font-weight: 600;
    animation: fadeIn 1s ease-out 1s backwards;
}

.btn-primary:hover {
    background-color: var(--color-brand-hover);
    transform: scale(1.05);
}

.btn-primary svg {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
}

/* Kontakt Section */
.kontakt-section {
    padding: 5rem 0;
    background-color: var(--color-white);
    position: relative;
    z-index: 3;
}

.kontakt-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.kontakt-title {
    font-size: 3.75rem;
    font-weight: 700;
    text-align: center;
    color: var(--color-gray-800);
    margin-bottom: 0.5rem;
}

.kontakt-subtitle {
    font-size: 1.5rem;
    text-align: center;
    color: var(--color-brand);
    margin-bottom: 3rem;
}

/* Grid Layout */
.kontakt-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 3rem;
}

@media (min-width: 1024px) {
    .kontakt-grid {
        grid-template-columns: 1fr 2fr;
    }
}

/* Kontakt Card */
.kontakt-card {
    background-color: var(--color-gray-50);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border-top: 4px solid var(--color-brand);
}

.quote-text {
    color: var(--color-gray-600);
    font-style: italic;
    margin-bottom: 1.5rem;
}

.kontakt-info {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.kontakt-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.kontakt-item svg {
    width: 1.5rem;
    height: 1.5rem;
    color: var(--color-brand);
    flex-shrink: 0;
}

.kontakt-item a {
    color: var(--color-gray-800);
    text-decoration: none;
    transition: color 0.2s;
}

.kontakt-item a:hover {
    color: var(--color-brand);
}

.kontakt-item--header span {
    color: var(--color-gray-800);
    font-weight: 600;
    font-size: 1.05rem;
}

.kontakt-item--header svg {
    color: var(--color-brand);
}

/* Formular Styles */
.kontakt-form {
    background-color: var(--color-gray-50);
    padding: 2rem;
    border-radius: 0.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border-top: 4px solid var(--color-brand);
}

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

.form-group {
    margin-bottom: 0;
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-brand);
}

.form-textarea {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1rem;
    transition: border-color 0.2s;
    resize: vertical;
    min-height: 100px;
}

.form-textarea:focus {
    outline: none;
    border-color: var(--color-brand);
}

/* Checkbox Label */
.checkbox-group {
    display: flex;
    align-items: flex-start;
    gap: 0.5rem;
}

.checkbox-group input[type="checkbox"] {
    margin-top: 0.25rem;
}

.checkbox-group label {
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.checkbox-group a {
    color: var(--color-brand);
    text-decoration: underline;
}

/* Submit Button */
.btn-submit {
    width: 100%;
    background-color: var(--color-brand);
    color: var(--color-white);
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-submit:hover {
    background-color: var(--color-brand-hover);
    transform: scale(1.02);
}

.btn-submit svg {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.5rem;
}

/* Status Messages */
.status-message {
    margin-top: 1rem;
    padding: 1rem;
    border-radius: 0.5rem;
    text-align: center;
}

.status-success {
    background-color: #d1fae5;
    color: #065f46;
}

.status-error {
    background-color: #fee2e2;
    color: #991b1b;
}

/* Footer */
.footer {
    background-color: var(--color-gray-900);
    color: var(--color-gray-600);
    padding: 2rem 0;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.footer-link {
    color: var(--color-gray-600);
    text-decoration: underline;
    text-underline-offset: 3px;
    font-size: 0.875rem;
    transition: color 0.2s;
}

.footer-link:hover {
    color: var(--color-white);
    text-decoration: underline;
}

.footer-copyright {
    text-align: center;
    font-size: 0.875rem;
}

/* Utility Classes */
.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* ─── Impressum / Datenschutz Seiten ─── */

.page-content {
    padding: 4rem 0;
    background-color: var(--color-gray-50);
}

/* Layout mit Sidebar */
.page-layout {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 3rem;
}

@media (max-width: 768px) {
    .page-layout {
        grid-template-columns: 1fr;
    }
}

.page-main {
    min-width: 0;
}

.page-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-gray-800);
    margin-bottom: 2rem;
    border-bottom: 4px solid var(--color-brand);
    padding-bottom: 1rem;
}

.page-card {
    padding: 0;
}

/* Sections als eigenständige Cards */
.page-section {
    margin-bottom: 1.5rem;
    padding: 0;
    border-bottom: none;
}

.page-section:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
}

/* Section-Cards: Schatten, Ecken, Hover-Lift, Animation */
.section-card {
    background-color: var(--color-white);
    padding: 2rem;
    border-radius: 0.75rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 4px 12px rgba(0, 0, 0, 0.04);
    border-left: 3px solid transparent;
    transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.3s ease;

    /* Entry-Animation (initialer Zustand) */
    opacity: 0;
    transform: translateY(16px);
}

.section-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.08), 0 8px 24px rgba(0, 0, 0, 0.06);
    border-left-color: var(--color-brand);
}

/* Staggered Entry: per JS hinzugefügt */
.section-card.is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity 0.5s ease, transform 0.5s ease, box-shadow 0.25s ease, border-color 0.3s ease;
}

.section-card:nth-child(1) { transition-delay: 0ms; }
.section-card:nth-child(2) { transition-delay: 80ms; }
.section-card:nth-child(3) { transition-delay: 160ms; }
.section-card:nth-child(4) { transition-delay: 240ms; }
.section-card:nth-child(5) { transition-delay: 320ms; }

.section-card:last-child {
    padding-bottom: 3rem;
}

.lead-text {
    color: var(--color-gray-800);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

/* Section-Titel mit SVG-Icon */
.section-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--color-gray-800);
    margin-top: 0;
    margin-bottom: 1.25rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--color-gray-100);
}

.section-title__icon {
    width: 1.35rem;
    height: 1.35rem;
    flex-shrink: 0;
    color: var(--color-brand);
}

/* Untertitel innerhalb von Section-Cards */
.subsection-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--color-gray-700);
    margin-top: 1.75rem;
    margin-bottom: 0.75rem;
    padding-left: 1rem;
    border-left: 3px solid var(--color-brand);
}

.body-text {
    color: var(--color-gray-600);
    margin-bottom: 1.5rem;
    line-height: 1.8;
}

.body-text a {
    color: var(--color-brand);
    text-decoration: underline;
}

.body-text a:hover {
    color: var(--color-brand-hover);
}

/* ─── Sidebar Navigation ─── */

.page-sidebar {
    position: sticky;
    top: 6rem;
    align-self: start;
}

@media (max-width: 768px) {
    .page-sidebar {
        display: none;
    }
}

.sidebar-nav {
    background-color: var(--color-white);
    padding: 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.08);
}

.sidebar-nav__title {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-gray-600);
    margin-bottom: 0.75rem;
}

.sidebar-nav__list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.sidebar-nav__list li {
    margin-bottom: 0.25rem;
}

.sidebar-nav__link {
    display: block;
    padding: 0.4rem 0.75rem;
    color: var(--color-gray-600);
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: 0.375rem;
    border-left: 3px solid transparent;
    transition: all 0.2s;
}

.sidebar-nav__link:hover {
    color: var(--color-brand);
    background-color: var(--color-gray-50);
}

.sidebar-nav__link.active {
    color: var(--color-brand);
    background-color: rgba(71, 138, 201, 0.08);
    border-left-color: var(--color-brand);
    font-weight: 600;
}

/* ─── Scroll-Fortschrittsbalken ─── */

.progress-bar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: transparent;
    z-index: 200;
    pointer-events: none;
}

.progress-bar__fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--color-brand), #1e40af);
    border-radius: 0 2px 2px 0;
    transition: width 0.1s linear;
}

/* ─── Back-to-Top Button ─── */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background-color: var(--color-brand);
    color: var(--color-white);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    opacity: 0;
    transform: translateY(12px);
    transition: opacity 0.3s, transform 0.3s, background-color 0.2s;
    z-index: 50;
    pointer-events: none;
}

.back-to-top.visible {
    opacity: 1;
    transform: translateY(0);
    pointer-events: auto;
}

.back-to-top:hover {
    background-color: var(--color-brand-hover);
}

.back-to-top svg {
    width: 1.25rem;
    height: 1.25rem;
}