/* ==========================================================================
   Entsorgung München – Design 2030
   BEM-ähnlich, CSS-Variablen, modular
   ========================================================================== */

:root {
    /* Farben – nachhaltig, klar */
    --color-bg: #0a0f0d;
    --color-surface: #131a17;
    --color-surface-elevated: #1c2521;
    --color-border: #2a3530;
    --color-text: #e8edea;
    --color-text-muted: #8a9a92;
    --color-accent: #22c55e;
    --color-accent-hover: #16a34a;
    --color-accent-muted: rgba(34, 197, 94, 0.15);
    /* Typografie */
    --font-sans: 'DM Sans', 'Outfit', system-ui, sans-serif;
    --font-display: 'Outfit', 'DM Sans', system-ui, sans-serif;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 2rem;
    --text-4xl: 2.5rem;
    /* Abstände */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    /* Layout */
    --container-max: 75rem;
    --header-height: 4rem;
    --radius: 0.75rem;
    --radius-lg: 1rem;
    --transition: 0.2s ease;
    /* Animation */
    --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
    --ease-out-quart: cubic-bezier(0.25, 1, 0.5, 1);
    --duration: 0.6s;
    --duration-slow: 0.9s;
}

/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    margin: 0;
    font-family: var(--font-sans);
    font-size: var(--text-base);
    line-height: 1.6;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

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

a { color: var(--color-accent); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--color-accent-hover); }

/* ==========================================================================
   Header
   ========================================================================== */
/* ==========================================================================
   Scroll-Reveal Animation
   ========================================================================== */
.reveal {
    opacity: 0;
    transform: translateY(28px);
    transition: opacity var(--duration) var(--ease-out-expo), transform var(--duration) var(--ease-out-expo);
}

.reveal.in-view {
    opacity: 1;
    transform: translateY(0);
}

.reveal[data-delay="0"] { transition-delay: 0.05s; }
.reveal[data-delay="1"] { transition-delay: 0.15s; }
.reveal[data-delay="2"] { transition-delay: 0.25s; }
.reveal[data-delay="3"] { transition-delay: 0.4s; }

/* ==========================================================================
   Header
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 15, 13, 0.9);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow 0.3s var(--ease-out-quart);
}

.site-header.scrolled {
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2);
}

.header-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-md) var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: var(--header-height);
}

.logo {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-text);
    font-family: var(--font-display);
    font-weight: 700;
    font-size: var(--text-xl);
}

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

.logo-icon {
    font-size: 1.5em;
    filter: grayscale(0.2);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    background: none;
    border: none;
    color: var(--color-text);
    cursor: pointer;
}

.nav-toggle-bar {
    width: 24px;
    height: 2px;
    background: currentColor;
    border-radius: 2px;
    transition: transform var(--transition);
}

.main-nav .nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: var(--space-lg);
}

.main-nav a {
    color: var(--color-text-muted);
    font-weight: 500;
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius);
    transition: color 0.25s var(--ease-out-quart), background 0.25s var(--ease-out-quart), transform 0.2s;
}

.main-nav a:hover {
    transform: translateY(-1px);
}

.main-nav a:hover,
.main-nav a.active {
    color: var(--color-text);
    background: var(--color-accent-muted);
}

.main-nav a.active { color: var(--color-accent); }

/* ==========================================================================
   Main Content
   ========================================================================== */
.main-content {
    min-height: calc(100vh - var(--header-height) - 180px);
}

.container {
    max-width: var(--container-max);
    margin: 0 auto;
    padding: var(--space-xl) var(--space-lg);
}

/* ==========================================================================
   Hero
   ========================================================================== */
.hero {
    position: relative;
    padding: var(--space-3xl) var(--space-lg);
    text-align: center;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(160deg, var(--color-surface) 0%, var(--color-bg) 50%);
    z-index: 0;
}

.hero__bg-shape {
    position: absolute;
    width: 80vmin;
    height: 80vmin;
    right: -20vmin;
    bottom: -20vmin;
    background: radial-gradient(circle, var(--color-accent-muted) 0%, transparent 70%);
    border-radius: 50%;
    opacity: 0.6;
    z-index: 0;
    animation: float 18s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translate(0, 0) scale(1); }
    33% { transform: translate(-3%, -5%) scale(1.05); }
    66% { transform: translate(2%, 3%) scale(0.98); }
}

.hero-inner {
    position: relative;
    z-index: 1;
    max-width: 50rem;
    margin: 0 auto;
}

.hero__badge {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: var(--color-accent-muted);
    color: var(--color-accent);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-radius: 999px;
    margin-bottom: var(--space-lg);
}

.hero__title {
    font-family: var(--font-display);
    font-size: clamp(var(--text-3xl), 5vw, var(--text-4xl));
    font-weight: 700;
    line-height: 1.2;
    margin: 0 0 var(--space-md);
}

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

.hero__text {
    font-size: var(--text-lg);
    color: var(--color-text-muted);
    margin: 0 0 var(--space-xl);
    max-width: 38rem;
    margin-left: auto;
    margin-right: auto;
}

.hero__cta {
    display: inline-flex;
    gap: var(--space-md);
    flex-wrap: wrap;
    justify-content: center;
}

/* ==========================================================================
   Buttons
   ========================================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    font-weight: 600;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}

.btn--primary {
    background: var(--color-accent);
    color: var(--color-bg);
}

.btn--primary:hover {
    background: var(--color-accent-hover);
    color: var(--color-bg);
    transform: translateY(-3px);
    box-shadow: 0 8px 24px rgba(34, 197, 94, 0.35);
}

.btn--primary:active {
    transform: translateY(-1px);
}

.btn--wide { min-width: 14rem; }

.btn--secondary:hover {
    transform: translateY(-2px);
}

.btn--secondary {
    background: var(--color-surface-elevated);
    color: var(--color-text);
    border: 1px solid var(--color-border);
}

.btn--secondary:hover {
    background: var(--color-border);
    border-color: var(--color-text-muted);
}

/* ==========================================================================
   Service Cards (Startseite)
   ========================================================================== */
.section {
    padding: var(--space-3xl) 0;
}

.section__title {
    font-family: var(--font-display);
    font-size: var(--text-2xl);
    font-weight: 700;
    margin: 0 0 var(--space-lg);
    text-align: center;
}

.section__subtitle {
    text-align: center;
    color: var(--color-text-muted);
    max-width: 40rem;
    margin: 0 auto var(--space-2xl);
}

.service-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-xl);
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.service-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: border-color 0.35s var(--ease-out-quart), transform 0.4s var(--ease-out-expo), box-shadow 0.4s var(--ease-out-quart);
}

.service-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.25);
}

.service-card__img-wrap {
    aspect-ratio: 16 / 10;
    overflow: hidden;
    background: var(--color-surface-elevated);
}

.service-card__image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease-out-expo);
}

.service-card:hover .service-card__image {
    transform: scale(1.08);
}

.service-card__link {
    transition: gap 0.25s, color 0.2s;
}

.service-card:hover .service-card__link {
    gap: var(--space-md);
}

.service-card__body {
    padding: var(--space-lg);
}

.service-card__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    margin: 0 0 var(--space-sm);
}

.service-card__text {
    color: var(--color-text-muted);
    margin: 0 0 var(--space-md);
    font-size: 0.9375rem;
}

.service-card__link {
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
}

.service-card__link::after {
    content: '→';
}

/* ==========================================================================
   Page Header (Unterseiten)
   ========================================================================== */
.page-header {
    padding: var(--space-2xl) var(--space-lg);
    text-align: center;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
}

.page-header__title {
    font-family: var(--font-display);
    font-size: clamp(var(--text-2xl), 4vw, var(--text-3xl));
    font-weight: 700;
    margin: 0 0 var(--space-md);
}

.page-header__lead {
    color: var(--color-text-muted);
    max-width: 40rem;
    margin: 0 auto;
}

/* ==========================================================================
   Content Sections (Unterseiten)
   ========================================================================== */
.content-section {
    padding: var(--space-2xl) var(--space-lg);
    max-width: var(--container-max);
    margin: 0 auto;
}

.content-section__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    font-weight: 600;
    margin: 0 0 var(--space-md);
}

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

.media-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: center;
    margin: var(--space-2xl) 0;
}

.media-block--reverse { direction: rtl; }
.media-block--reverse > * { direction: ltr; }

.media-block__image {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background: var(--color-surface-elevated);
}

.media-block__image img {
    width: 100%;
    aspect-ratio: 4/3;
    object-fit: cover;
}

@media (max-width: 768px) {
    .media-block,
    .media-block--reverse {
        grid-template-columns: 1fr;
        direction: ltr;
    }
}

.section--alt {
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
}

.usp-list {
    list-style: none;
    margin: 0;
    padding: 0;
    max-width: 40rem;
    margin-left: auto;
    margin-right: auto;
    color: var(--color-text-muted);
    line-height: 2;
}

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

.content-list {
    color: var(--color-text-muted);
    margin: 0;
    padding-left: 1.25rem;
}

/* ==========================================================================
   Kontakt / Formular
   ========================================================================== */
.contact-section {
    padding: var(--space-3xl) var(--space-lg);
    max-width: 42rem;
    margin: 0 auto;
}

.contact-header {
    text-align: center;
    margin-bottom: var(--space-2xl);
}

.contact-header__title {
    font-family: var(--font-display);
    font-size: var(--text-3xl);
    font-weight: 700;
    margin: 0 0 var(--space-md);
}

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

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    margin-bottom: var(--space-2xl);
}

.contact-form__error {
    padding: var(--space-md);
    background: rgba(220, 38, 38, 0.15);
    color: #f87171;
    border-radius: var(--radius);
    margin: 0 0 var(--space-sm);
}

.contact-form__label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--color-text);
}

.contact-form__input {
    width: 100%;
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-sans);
    font-size: var(--text-base);
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius);
    transition: border-color 0.25s, box-shadow 0.25s, transform 0.2s;
}

.contact-form__input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px var(--color-accent-muted);
}

.contact-form__input::placeholder {
    color: var(--color-text-muted);
    opacity: 0.8;
}

.contact-form__select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%238a9a92' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-lg) center;
    padding-right: 2.5rem;
}

.contact-form__textarea {
    min-height: 8rem;
    resize: vertical;
}

.contact-form__row--submit {
    margin-top: var(--space-md);
}

.contact-success {
    text-align: center;
    padding: var(--space-3xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.contact-success__icon {
    width: 4rem;
    height: 4rem;
    margin: 0 auto var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-muted);
    color: var(--color-accent);
    font-size: 1.5rem;
    font-weight: 700;
    border-radius: 50%;
    animation: scaleIn 0.5s var(--ease-out-expo);
}

@keyframes scaleIn {
    from { opacity: 0; transform: scale(0.5); }
    to { opacity: 1; transform: scale(1); }
}

.contact-success__title {
    font-family: var(--font-display);
    font-size: var(--text-xl);
    margin: 0 0 var(--space-sm);
}

.contact-success__text {
    color: var(--color-text-muted);
    margin: 0 0 var(--space-xl);
}

.contact-info {
    padding: var(--space-xl);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    color: var(--color-text-muted);
}

.contact-info__title {
    font-family: var(--font-display);
    font-size: var(--text-lg);
    margin: 0 0 var(--space-md);
    color: var(--color-text);
}

.contact-info p { margin: 0 0 var(--space-sm); }

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
    margin-top: auto;
    background: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-2xl) var(--space-lg);
}

.footer-inner {
    max-width: var(--container-max);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: var(--space-xl);
    align-items: start;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: 700;
    font-size: var(--text-lg);
}

.footer-nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-nav a {
    color: var(--color-text-muted);
}

.footer-nav a:hover { color: var(--color-accent); }

.footer-contact {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.footer-contact p { margin: 0 0 var(--space-xs); }

.footer-copy {
    grid-column: 1 / -1;
    margin: var(--space-xl) 0 0;
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

@media (max-width: 640px) {
    .footer-inner {
        grid-template-columns: 1fr;
        text-align: center;
    }
}

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

    .main-nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--color-surface);
        border-bottom: 1px solid var(--color-border);
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease;
    }

    .main-nav.is-open { max-height: 20rem; }

    .main-nav .nav-list {
        flex-direction: column;
        padding: var(--space-md);
        gap: 0;
    }

    .main-nav a {
        display: block;
        padding: var(--space-md);
    }
}