/* ========================================
   HKAL 2.0 - Main Stylesheet
   Bold Gallery Theme with Dark Blue Background
   ======================================== */

/* ========================================
   CSS Custom Properties (Design Tokens)
   ======================================== */
:root {
  /* Colors */
  --color-background: #0a1929;
  --color-background-lighter: #132f4c;
  --color-background-darker: #001e3c;
  --color-text-primary: #ffffff;
  --color-text-secondary: #b2bac2;
  --color-accent: #3399ff;
  --color-accent-hover: #66b2ff;
  --color-border: #1e3a5f;
  --color-error: #f44336;
  --color-success: #4caf50;

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  --font-family-headings: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;

  --font-size-base: 16px;
  --font-size-small: 0.875rem;
  --font-size-large: 1.125rem;
  --font-size-h1: 2.5rem;
  --font-size-h2: 2rem;
  --font-size-h3: 1.5rem;
  --font-size-h4: 1.25rem;

  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-bold: 700;

  --line-height-base: 1.6;
  --line-height-headings: 1.2;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-xxl: 4rem;

  /* Layout */
  --container-max-width: 1400px;
  --container-padding: var(--spacing-md);
  --header-height: 80px;
  --footer-height: 60px;

  /* Border Radius */
  --border-radius-sm: 4px;
  --border-radius-md: 8px;
  --border-radius-lg: 12px;

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-normal: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

body {
  font-family: var(--font-family-base);
  font-weight: var(--font-weight-normal);
  line-height: var(--line-height-base);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ========================================
   Typography
   ======================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-family-headings);
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-headings);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-h1);
}

h2 {
  font-size: var(--font-size-h2);
}

h3 {
  font-size: var(--font-size-h3);
}

h4 {
  font-size: var(--font-size-h4);
}

p {
  margin-bottom: var(--spacing-sm);
}

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

a:hover,
a:focus {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

/* Inline links within body text need a non-color cue (WCAG 1.4.1) */
p a {
  text-decoration: underline;
}

/* Remove outline on mouse click, keep for keyboard */
a:focus:not(:focus-visible) {
  outline: none;
}

/* ========================================
   Layout Components
   ======================================== */
.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

.page-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.main-content {
  flex: 1;
  padding: var(--spacing-xl) 0;
}

/* ========================================
   Header & Navigation
   ======================================== */
.site-header {
  background-color: var(--color-background-darker);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-height);
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.site-logo {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  text-decoration: none;
}

.site-logo:hover {
  color: var(--color-accent-hover);
  text-decoration: none;
}

/* Navigation */
.main-nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
  align-items: center;
}

.main-nav a {
  color: var(--color-text-secondary);
  font-weight: var(--font-weight-medium);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

.main-nav a:hover,
.main-nav a:focus-visible {
  color: var(--color-text-primary);
  background-color: var(--color-background-lighter);
  text-decoration: none;
}

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* ========================================
   Footer
   ======================================== */
.site-footer {
  background-color: var(--color-background-darker);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-lg) 0;
  margin-top: auto;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-md);
}

.footer-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  flex-wrap: wrap;
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
}

.footer-links a:hover {
  color: var(--color-text-primary);
}

.footer-copyright {
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
}

/* ========================================
   Buttons
   ======================================== */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  font-weight: var(--font-weight-medium);
  text-align: center;
  border-radius: var(--border-radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  font-size: var(--font-size-base);
  font-family: inherit;
  text-decoration: none;
}

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

.btn-primary:hover,
.btn-primary:focus-visible {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

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

.btn-secondary:hover,
.btn-secondary:focus-visible {
  background-color: var(--color-background);
  border-color: var(--color-accent);
  text-decoration: none;
}

/* ========================================
   Forms
   ======================================== */
.form-group {
  margin-bottom: var(--spacing-md);
}

label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

input[type="text"],
input[type="email"],
input[type="tel"],
textarea,
select {
  width: 100%;
  padding: var(--spacing-sm);
  font-size: var(--font-size-base);
  font-family: inherit;
  color: var(--color-text-primary);
  background-color: var(--color-background-lighter);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(51, 153, 255, 0.1);
}

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

.form-error {
  color: var(--color-error);
  font-size: var(--font-size-small);
  margin-top: var(--spacing-xs);
}

.form-success {
  color: var(--color-success);
  font-size: var(--font-size-small);
  margin-top: var(--spacing-xs);
}

/* ========================================
   Utility Classes
   ======================================== */
.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.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;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 0;
  background-color: var(--color-accent);
  color: var(--color-text-primary);
  padding: var(--spacing-sm);
  z-index: 1000;
  text-decoration: none;
}

.skip-link:focus {
  top: 0;
}

/* ========================================
   Content Pages
   ======================================== */

/* About Page */
.about-content {
  max-width: 900px;
  margin: 0 auto;
}

.about-section {
  margin-bottom: var(--spacing-xxl);
}

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

.about-section h2 {
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

/* About Page — Artist Portrait */
.about-portrait {
  margin: 0 auto var(--spacing-xl);
  max-width: 360px;
  text-align: center;
}

.about-portrait img {
  display: block;
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  aspect-ratio: 4 / 5;
  object-fit: cover;
}

.about-portrait__caption {
  margin-top: var(--spacing-sm);
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
  font-style: italic;
}

@media (min-width: 768px) {
  .about-portrait {
    float: right;
    margin: 0 0 var(--spacing-lg) var(--spacing-xl);
    max-width: 300px;
    shape-outside: margin-box;
  }
}

/* Clear float so footer never gets pulled up beside portrait */
.about-content::after {
  content: '';
  display: table;
  clear: both;
}

/* Contact Page */
.contact-content {
  max-width: 700px;
  margin: 0 auto;
}

.contact-intro {
  font-size: var(--font-size-large);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xl);
  text-align: center;
}

.contact-card {
  background-color: var(--color-background-lighter);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  border: 1px solid var(--color-border);
  border-top: 3px solid var(--color-accent);
  box-shadow: var(--shadow-md);
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.contact-card__label {
  font-size: var(--font-size-small);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin: 0 0 var(--spacing-sm) 0;
}

.contact-card__email {
  display: inline-block;
  font-size: var(--font-size-large);
  font-weight: 600;
  color: var(--color-accent);
  text-decoration: none;
  word-break: break-all;
}

.contact-card__email:hover,
.contact-card__email:focus-visible {
  color: var(--color-accent-hover);
  text-decoration: underline;
}

.contact-card__email:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--border-radius-sm);
}

.contact-note {
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--font-size-small);
}

/* Legal Pages (Impressum, Datenschutz) */
.legal-content {
  max-width: 900px;
  margin: 0 auto;
  line-height: 1.8;
}

/* Cap paragraph line-length for comfortable reading on wide screens */
.legal-content p,
.legal-content li {
  max-width: 70ch;
}

.legal-section {
  margin-bottom: var(--spacing-xxl);
}

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

.legal-section h2 {
  color: var(--color-accent);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.legal-section h3 {
  color: var(--color-text-primary);
  margin-top: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

.legal-section h4 {
  color: var(--color-text-secondary);
  margin-top: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
}

/* Remove excess top margin from the first h2 in legal pages */
.legal-section:first-child h2 {
  margin-top: 0;
}

.legal-section ul {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
}

.legal-section li {
  margin-bottom: var(--spacing-xs);
}

/* Revoke consent button (datenschutz.html) */
.btn-revoke-consent {
  display: inline-block;
  margin: var(--spacing-sm) 0;
  padding: var(--spacing-xs) var(--spacing-md);
  font-size: var(--font-size-small);
  font-family: inherit;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast);
}

.btn-revoke-consent:hover {
  border-color: var(--color-accent);
  color: var(--color-text-primary);
}

.btn-revoke-consent:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.legal-note {
  margin-top: var(--spacing-xs);
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

.legal-datestamp {
  font-size: var(--font-size-small);
  color: var(--color-text-secondary);
}

/* Subpage Hero (shared across about, contact, legal pages) */
.page-hero {
  height: 35vh;
  min-height: 220px;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  padding: var(--spacing-xl) var(--spacing-xl);
}

.page-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 25, 41, 0.2) 0%,
    rgba(10, 25, 41, 0.85) 100%
  );
  z-index: 1;
}

.page-hero__bg-picture {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.page-hero__bg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  z-index: 0;
}

.page-hero__content {
  position: relative;
  z-index: 2;
}

.page-hero__title {
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin: 0;
  color: var(--color-text-primary);
}

@media (max-width: 768px) {
  .page-hero {
    height: 28vh;
    min-height: 180px;
    padding: var(--spacing-lg);
  }
}

/* ========================================
   Responsive Design
   ======================================== */
@media (max-width: 768px) {
  :root {
    --font-size-h1: 2rem;
    --font-size-h2: 1.75rem;
    --font-size-h3: 1.375rem;
    --spacing-xl: 2rem;
    --spacing-xxl: 3rem;
  }

  /* Mobile Navigation */
  .menu-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-background-darker);
    border-bottom: 1px solid var(--color-border);
    padding: var(--spacing-md);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all var(--transition-normal);
  }

  .main-nav.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .main-nav ul {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .main-nav a {
    display: block;
    width: 100%;
  }

  .footer-container {
    flex-direction: column;
    text-align: center;
  }

  .footer-links {
    justify-content: center;
  }
}

@media (max-width: 480px) {
  :root {
    --container-padding: var(--spacing-sm);
  }
}

/* ========================================
   Print Styles
   ======================================== */
@media print {
  .site-header,
  .site-footer,
  .menu-toggle {
    display: none;
  }

  body {
    background-color: white;
    color: black;
  }

  a {
    text-decoration: underline;
  }
}