/**
 * Grotek Theme - Main CSS
 * Base styles applied across all templates
 *
 * @package Grotek
 * @author UIX Agentur Maximilian Balkenholl
 */

/* ========================================
   CSS Variables
   ======================================== */
   :root {
    /* Colors - Monochrome */
    --color-background: #fcfcfc;
    --color-foreground: #1a1a1a;
    --color-card: #f5f5f5;
    --color-muted: #ededed;
    --color-muted-foreground: #737373;
    --color-border: #e0e0e0;
    
    /* Brand Accent */
    --color-brand: rgb(120, 201, 1);
    --color-brand-light: rgba(120, 201, 1, 0.1);
    
    /* Typography */
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-serif: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    
    /* Container */
    --container-padding: 1.5rem;
    --container-max: 1400px;
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 300ms ease;
    --transition-slow: 500ms ease;
    
    /* Border Radius */
    --radius: 0;
}

@media (min-width: 1024px) {
    :root {
        --container-padding: 3rem;
    }
}

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: var(--font-sans);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-foreground);
    background-color: var(--color-background);
}

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

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

button {
    font-family: inherit;
    font-size: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

ul, ol {
    list-style: none;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

.section-subtitle {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: var(--color-brand);
    margin-bottom: 1rem;
}

.section-subtitle--light {
    color: var(--color-brand);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 500;
    letter-spacing: -0.02em;
    line-height: 1.1;
}

.section-title--light {
    color: var(--color-background);
}

.section-title--sm {
    font-size: clamp(1.5rem, 3vw, 2.5rem);
}

/* ========================================
   Header
   ======================================== */
.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transition: all var(--transition-base);
}

.header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--container-padding);
}

@media (min-width: 1024px) {
    .header__inner {
        padding: 1.25rem var(--container-padding);
    }
}

/* Transparent Header (Front Page) */
.header--transparent {
    mix-blend-mode: difference;
}

.header--transparent .header__logo,
.header--transparent .header__nav-list a,
.header--transparent .header__contact-btn,
.header--transparent .header__menu-toggle {
    color: white;
}

/* Solid Header (Inner Pages) & Scrolled State - immer dunkel (#1a1a1a) */
.header--solid,
.header--transparent.is-scrolled {
    background-color: rgba(26, 26, 26, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

/* mix-blend-mode aufheben, damit die dunkle Flaeche sichtbar bleibt */
.header--transparent.is-scrolled {
    mix-blend-mode: normal;
}

.header--solid .header__logo,
.header--solid .header__nav-list a,
.header--solid .header__menu-toggle,
.header--transparent.is-scrolled .header__logo,
.header--transparent.is-scrolled .header__nav-list a,
.header--transparent.is-scrolled .header__menu-toggle {
    color: #fff;
}

.header--solid .header__nav-list a:hover,
.header--transparent.is-scrolled .header__nav-list a:hover {
    color: var(--color-brand);
}

.header--solid .header__contact-btn,
.header--transparent.is-scrolled .header__contact-btn {
    background-color: #fff;
    color: var(--color-foreground);
    padding: 0.5rem 1rem;
}

.header--solid .header__contact-btn:hover,
.header--transparent.is-scrolled .header__contact-btn:hover {
    background-color: var(--color-brand);
    color: var(--color-foreground);
}

/* Logo */
.header__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 500;
    letter-spacing: -0.02em;
    transition: color var(--transition-fast);
}

.header__tooth-icon {
    width: 1.5rem;
    height: 1.5rem;
    transition: transform var(--transition-base);
}

.header__logo:hover .header__tooth-icon {
    transform: scale(1.1);
}

.header__logo-img {
    height: 2.5rem;
    width: auto;
    max-width: 180px;
    object-fit: contain;
}

/* Navigation */
.header__nav {
    display: none;
}

@media (min-width: 1024px) {
    .header__nav {
        display: block;
    }
}

.header__nav-list {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.header__nav-list li {
    list-style: none;
    position: relative;
}

.header__nav-list a,
.header__nav-list .nav-link {
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    transition: opacity var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.header__nav-list a:hover,
.header__nav-list .nav-link:hover {
    opacity: 0.6;
}

/* Dropdown Arrow Icon */
.nav-dropdown-icon {
    transition: transform var(--transition-fast);
}

.has-dropdown:hover .nav-dropdown-icon {
    transform: rotate(180deg);
}

/* Desktop Dropdown Submenu */
.nav-submenu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(10px);
    min-width: 240px;
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    padding: 0.5rem 0;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    z-index: 100;
    margin-top: 1rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.nav-submenu::before {
    content: '';
    position: absolute;
    top: -1rem;
    left: 0;
    right: 0;
    height: 1rem;
}

.has-dropdown:hover .nav-submenu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav-submenu__item {
    list-style: none;
}

.header__nav-list .nav-submenu__link,
.nav-submenu__link {
    display: block;
    padding: 0.75rem 1.25rem;
    color: #1a1a1a !important;
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.header__nav-list .nav-submenu__link:hover,
.nav-submenu__link:hover {
    background-color: #f5f5f5;
    color: var(--color-brand) !important;
    padding-left: 1.5rem;
}

/* Contact Button */
.header__cta {
    display: none;
}

@media (min-width: 1024px) {
    .header__cta {
        display: block;
    }
}

.header__contact-btn {
    display: flex;
    align-items: center;
    gap: 0.25rem;
    font-size: 0.875rem;
    letter-spacing: 0.02em;
    transition: all var(--transition-fast);
}

.header__arrow-icon {
    width: 1rem;
    height: 1rem;
}

/* Mobile Menu Toggle */
.header__menu-toggle {
    display: block;
    padding: 0.5rem;
    transition: color var(--transition-fast);
}

@media (min-width: 1024px) {
    .header__menu-toggle {
        display: none;
    }
}

.header__menu-icon {
    width: 1.5rem;
    height: 1.5rem;
}

/* ========================================
   Mobile Menu
   ======================================== */
.mobile-menu {
    position: fixed;
    inset: 0;
    z-index: 200;
    background-color: var(--color-foreground);
    transform: translateX(100%);
    transition: transform var(--transition-slow);
}

.mobile-menu.is-open {
    transform: translateX(0);
}

.mobile-menu__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem var(--container-padding);
}

.mobile-menu__logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--color-background);
    font-size: 1.25rem;
    font-weight: 500;
}

.mobile-menu__logo-img {
    height: 2.5rem;
    width: auto;
    max-width: 180px;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.mobile-menu__tooth-icon {
    width: 1.5rem;
    height: 1.5rem;
}

.mobile-menu__close {
    color: var(--color-background);
    padding: 0.5rem;
}

.mobile-menu__close svg {
    width: 1.5rem;
    height: 1.5rem;
}

.mobile-menu__nav {
    display: flex;
    flex-direction: column;
    padding: 3rem var(--container-padding);
}

.mobile-menu__item {
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.mobile-menu__item:last-child {
    border-bottom: none;
}

.mobile-menu__item.has-children {
    position: relative;
}

.mobile-menu__item.has-children .mobile-menu__link {
    padding-right: 3rem;
}

.mobile-menu__link {
    display: block;
    color: var(--color-background);
    font-size: 2rem;
    font-weight: 500;
    padding: 1rem 0;
    transition: all var(--transition-base);
}

@media (min-width: 480px) {
    .mobile-menu__link {
        font-size: 2.5rem;
    }
}

.mobile-menu__link:hover {
    padding-left: 1rem;
    color: var(--color-brand);
}

.mobile-menu__number {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.4);
    margin-right: 1rem;
}

/* Mobile Submenu Toggle Button */
.mobile-menu__toggle {
    position: absolute;
    right: 0;
    top: 1rem;
    color: var(--color-background);
    padding: 0.5rem;
    transition: transform var(--transition-fast);
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-menu__toggle.is-open {
    transform: rotate(180deg);
}

.mobile-menu__toggle svg {
    display: block;
}

/* Mobile Submenu */
.mobile-menu__submenu {
    display: none;
    padding-left: 2rem;
    padding-bottom: 1rem;
}

.mobile-menu__submenu.is-open {
    display: block;
}

.mobile-menu__sublink {
    display: block;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.125rem;
    padding: 0.75rem 0;
    transition: all var(--transition-fast);
    border-left: 2px solid transparent;
    padding-left: 1rem;
}

.mobile-menu__sublink:hover {
    color: var(--color-brand);
    border-left-color: var(--color-brand);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
    background-color: var(--color-foreground);
    color: var(--color-background);
}

.footer__main {
    padding: 3rem var(--container-padding);
}

@media (min-width: 1024px) {
    .footer__main {
        padding: 4rem var(--container-padding);
    }
}

.footer__grid {
    display: grid;
    gap: 3rem;
}

@media (min-width: 1024px) {
    .footer__grid {
        grid-template-columns: 2fr 1fr 1.5fr 1.5fr;
        gap: 2rem;
    }
}

.footer__logo {
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
}

.footer__tagline {
    color: rgba(255, 255, 255, 0.5);
    margin-top: 1rem;
    max-width: 20rem;
}

.footer__heading {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.15em;
    color: rgba(255, 255, 255, 0.5);
    margin-bottom: 1rem;
}

.footer__nav-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.footer__nav-list a {
    transition: color var(--transition-fast);
}

.footer__nav-list a:hover {
    color: rgba(255, 255, 255, 0.7);
}

.footer__services {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    color: rgba(255, 255, 255, 0.7);
}

.footer__cta-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all var(--transition-base);
}

.footer__cta-btn:hover {
    background-color: var(--color-brand);
    color: var(--color-foreground);
    border-color: var(--color-brand);
}

.footer__cta-btn svg {
    width: 1rem;
    height: 1rem;
    transition: transform var(--transition-base);
}

.footer__cta-btn:hover svg {
    transform: translate(2px, -2px);
}

.footer__bottom {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem var(--container-padding);
    border-top: 1px solid rgba(255, 255, 255, 0.2);
}

@media (min-width: 1024px) {
    .footer__bottom {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
    }
}

.footer__copyright {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.5);
}

.footer__legal {
    display: flex;
    gap: 1.5rem;
    font-size: 0.875rem;
}

.footer__legal a {
    color: rgba(255, 255, 255, 0.5);
    transition: color var(--transition-fast);
}

.footer__legal a:hover {
    color: var(--color-background);
}

/* ========================================
   Page Templates
   ======================================== */
.page-header {
    padding-top: 8rem;
    padding-bottom: 3rem;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
    max-width: var(--container-max);
    margin: 0 auto;
}

.page-header__title {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 500;
    letter-spacing: -0.02em;
}

.page-featured-image {
    max-width: 1600px;
    margin: 0 auto 3rem;
    padding: 0 var(--container-padding);
}

.page-featured-image img {
    width: 100%;
    height: auto;
    object-fit: cover;
    filter: grayscale(100%);
    transition: filter var(--transition-slow);
}

.page-featured-image:hover img {
    filter: grayscale(0%);
}

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--container-padding) 4rem;
}

.page-content h2 {
    font-size: 1.75rem;
    margin-top: 3rem;
    margin-bottom: 1rem;
}

.page-content h3 {
    font-size: 1.375rem;
    margin-top: 2rem;
    margin-bottom: 0.75rem;
}

.page-content p {
    margin-bottom: 1.5rem;
    color: var(--color-muted-foreground);
}

.page-content ul, .page-content ol {
    margin-bottom: 1.5rem;
    padding-left: 1.5rem;
}

.page-content li {
    margin-bottom: 0.5rem;
    color: var(--color-muted-foreground);
    list-style: disc;
}

.page-content a {
    color: var(--color-foreground);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.page-content a:hover {
    opacity: 0.7;
}

.page-content blockquote {
    border-left: 2px solid var(--color-foreground);
    padding-left: 1.5rem;
    margin: 2rem 0;
    font-style: italic;
}

/* ========================================
   Single Post (Blog)
   ======================================== */
.single-post__toc {
    background-color: var(--color-muted);
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.single-post__toc-title {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 1rem;
    font-weight: 600;
}

.single-post__toc-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.single-post__toc-link {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
    transition: color var(--transition-fast);
    padding: 0.25rem 0;
}

.single-post__toc-link:hover {
    color: var(--color-foreground);
}

.single-post__toc-link--h3 {
    padding-left: 1rem;
}

.single-post__toc-link--h4 {
    padding-left: 2rem;
}

.single-post__meta {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 2rem;
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
}

/* ========================================
   Archive / Category
   ======================================== */
.archive-grid {
    display: grid;
    gap: 2rem;
    padding: 0 var(--container-padding) 4rem;
    max-width: var(--container-max);
    margin: 0 auto;
}

@media (min-width: 768px) {
    .archive-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .archive-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.archive-card {
    display: block;
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.archive-card:hover {
    border-color: var(--color-foreground);
}

.archive-card__image {
    aspect-ratio: 16 / 10;
    overflow: hidden;
}

.archive-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: grayscale(100%);
    transition: all var(--transition-slow);
}

.archive-card:hover .archive-card__image img {
    filter: grayscale(0%);
    transform: scale(1.05);
}

.archive-card__content {
    padding: 1.5rem;
}

.archive-card__date {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted-foreground);
    margin-bottom: 0.5rem;
}

.archive-card__title {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    transition: color var(--transition-fast);
}

.archive-card:hover .archive-card__title {
    color: var(--color-muted-foreground);
}

.archive-card__excerpt {
    font-size: 0.875rem;
    color: var(--color-muted-foreground);
    line-height: 1.6;
}

/* ========================================
   404 Page
   ======================================== */
.error-404 {
    min-height: 80vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 8rem var(--container-padding) 4rem;
}

.error-404__number {
    font-size: clamp(8rem, 20vw, 15rem);
    font-weight: 700;
    line-height: 1;
    color: var(--color-muted);
    letter-spacing: -0.05em;
}

.error-404__title {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: 1rem;
}

.error-404__text {
    color: var(--color-muted-foreground);
    margin-bottom: 2rem;
    max-width: 30rem;
}

.error-404__btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background-color: var(--color-foreground);
    color: var(--color-background);
    padding: 0.875rem 1.5rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    transition: all var(--transition-base);
}

.error-404__btn:hover {
    background-color: transparent;
    color: var(--color-foreground);
    outline: 1px solid var(--color-foreground);
}

.error-404__btn svg {
    width: 1rem;
    height: 1rem;
    transition: transform var(--transition-base);
}

.error-404__btn:hover svg {
    transform: translate(2px, -2px);
}

/* ========================================
   Contact Form (Shortcode)
   ======================================== */
.grotek-contact-form {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.grotek-contact-form__group {
    display: flex;
    flex-direction: column;
}

.grotek-contact-form__label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-muted-foreground);
    margin-bottom: 0.5rem;
}

.grotek-contact-form__input,
.grotek-contact-form__textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 2px solid var(--color-border);
    padding: 0.75rem 0;
    font-size: 1.125rem;
    font-family: inherit;
    color: var(--color-foreground);
    transition: border-color var(--transition-fast);
}

.grotek-contact-form__input:focus,
.grotek-contact-form__textarea:focus {
    outline: none;
    border-color: var(--color-brand);
}

.grotek-contact-form__textarea {
    resize: none;
    min-height: 100px;
}

.grotek-contact-form__submit {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background-color: var(--color-foreground);
    color: var(--color-background);
    padding: 1rem;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-weight: 500;
    transition: all var(--transition-base);
}

.grotek-contact-form__submit:hover {
    background-color: var(--color-brand);
    color: var(--color-foreground);
}

.grotek-contact-form__submit svg {
    width: 1rem;
    height: 1rem;
    transition: transform var(--transition-base);
}

.grotek-contact-form__submit:hover svg {
    transform: translate(2px, -2px);
}

.grotek-contact-form__message {
    padding: 1rem;
    text-align: center;
    font-size: 0.875rem;
}

.grotek-contact-form__message--success {
    background-color: #d4edda;
    color: #155724;
}

.grotek-contact-form__message--error {
    background-color: #f8d7da;
    color: #721c24;
}

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

.grayscale {
    filter: grayscale(100%);
}

.grayscale-hover:hover {
    filter: grayscale(0%);
}

/* Footer: dynamische Leistungen und zwei Standorte */
.footer__grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
@media (min-width: 900px) { .footer__grid { grid-template-columns: 1.2fr .85fr 1fr 1.15fr .9fr; } }
.footer__services { display: flex; flex-direction: column; align-items: flex-start; gap: .65rem; }
.footer__services a, .footer__locations-col > a { display: block; color: rgba(255,255,255,.72); text-decoration: none; line-height: 1.6; transition: color .2s; }
.footer__services a:hover, .footer__locations-col > a:hover { color: var(--color-brand); }
.footer__locations-col { min-width: 0; }
.footer__location { margin-bottom: 1rem; }
.footer__location strong { color: #fff; font-size: .9rem; display: block; margin-bottom: .25rem; }
.footer__location address { font-style: normal; color: rgba(255,255,255,.65); font-size: .85rem; line-height: 1.6; }
.footer__location-primary { color: var(--color-brand); font-weight: 400; font-size: .68rem; margin-left: .3rem; }
.footer__locations-col > a { font-size: .85rem; overflow-wrap: anywhere; margin-top: .4rem; }
@media (max-width: 540px) { .footer__grid { grid-template-columns: 1fr; } }