/* =====================================================
   SLANA - Main Stylesheet
   Clean, maintainable CSS for psychedelic therapy advocacy
   ===================================================== */

/* --------------------- CSS Custom Properties --------------------- */
:root {
  /* Colors - Vibrant palette */
  --color-primary: #1a1a2e;
  --color-secondary: #16213e;
  --color-accent: #0f3460;
  --color-highlight: #7b2d8e;
  --color-highlight-light: #9b4dca;
  --color-text: #333;
  --color-text-light: #666;
  --color-text-inverse: #fff;
  --color-background: #fff;
  --color-background-alt: #f8f9fa;
  --color-border: #e0e0e0;

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-highlight: linear-gradient(135deg, #7b2d8e 0%, #9b4dca 100%);
  --gradient-dark: linear-gradient(135deg, #1a1a2e 0%, #0f3460 100%);
  --gradient-glow: linear-gradient(135deg, rgba(123, 45, 142, 0.4), rgba(102, 126, 234, 0.4));

  /* Typography */
  --font-primary: 'Proxima Nova', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-secondary: 'Adobe Garamond Pro', Georgia, 'Times New Roman', serif;
  --font-size-base: 16px;
  --font-size-sm: 0.875rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.5rem;
  --font-size-2xl: 2rem;
  --font-size-3xl: 2.5rem;
  --line-height-base: 1.6;
  --line-height-tight: 1.3;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  /* Layout */
  --max-width: 1200px;
  --max-width-narrow: 800px;
  --header-height: 80px;
  --border-radius: 8px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 500ms cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 12px 28px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
  --shadow-glow: 0 0 30px rgba(233, 69, 96, 0.3);
  --shadow-glow-accent: 0 0 30px rgba(102, 126, 234, 0.3);
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: var(--line-height-base);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

a:hover {
  color: var(--color-highlight);
}

ul,
ol {
  list-style: none;
}

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

/* --------------------- Typography --------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-primary);
  font-weight: 600;
  line-height: var(--line-height-tight);
  color: var(--color-primary);
}

h1 {
  font-size: var(--font-size-3xl);
  margin-bottom: var(--spacing-lg);
}

h2 {
  font-size: var(--font-size-2xl);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

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

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

/* --------------------- Layout --------------------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

section {
  padding: var(--spacing-3xl) 0;
}

section:nth-child(even) {
  background-color: var(--color-background-alt);
}

/* --------------------- Header --------------------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
}

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

.site-logo {
  height: 75px;
  width: auto;
}

.site-logo img {
  height: 100%;
  width: auto;
}

/* --------------------- Navigation --------------------- */
.nav-menu {
  display: flex;
  gap: var(--spacing-lg);
}

.nav-menu a {
  font-weight: 600;
  color: var(--color-text);
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-menu a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-highlight);
  transition: width var(--transition-base);
}

.nav-menu a:hover::after {
  width: 100%;
}

/* Mobile Navigation */
.mobile-nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.mobile-nav-toggle span {
  display: block;
  width: 25px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-base);
}

@media (max-width: 768px) {
  .nav-menu {
    display: none;
    position: absolute;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-background);
    flex-direction: column;
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-lg);
  }

  .nav-menu a {
    padding: 12px 0;
  }

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

  .mobile-nav-toggle {
    display: flex;
  }
}

/* --------------------- Hero Section --------------------- */
.hero {
  position: relative;
  min-height: 80vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  color: var(--color-text-inverse);
  margin-top: var(--header-height);
  overflow: hidden;
  isolation: isolate;
}

.hero__background {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
}

.hero__overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(26, 26, 46, 0.7), rgba(15, 52, 96, 0.7));
  z-index: -1;
}

.hero__content {
  max-width: 800px;
  padding: var(--spacing-xl);
}

.hero__title {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 700;
  color: var(--color-text-inverse);
  margin-bottom: var(--spacing-lg);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero__subtitle {
  font-size: var(--font-size-xl);
  opacity: 0.9;
}

/* --------------------- Section Headers --------------------- */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  position: relative;
  display: inline-block;
}

.section-header h2::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-highlight);
  margin: var(--spacing-md) auto 0;
}

/* --------------------- Article Gallery --------------------- */
.article-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-xl);
}

.article-card {
  background: var(--color-background);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  cursor: pointer;
}

.article-card__title a::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 1;
}

.article-card::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--border-radius-lg);
  padding: 2px;
  background: var(--gradient-highlight);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.article-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-xl);
}

.article-card:hover::after {
  opacity: 1;
}

.article-card__image {
  aspect-ratio: 16 / 10;
  overflow: hidden;
  position: relative;
}

.article-card__image::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--gradient-glow);
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.article-card:hover .article-card__image::after {
  opacity: 0.3;
}

.article-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.article-card:hover .article-card__image img {
  transform: scale(1.1);
}

.article-card__content {
  padding: var(--spacing-lg);
}

.article-card__title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-sm);
}

.article-card__title a {
  color: var(--color-primary);
  transition: color var(--transition-fast);
  background: linear-gradient(var(--color-highlight), var(--color-highlight)) no-repeat 0 100%;
  background-size: 0% 2px;
  transition: background-size var(--transition-base), color var(--transition-fast);
}

.article-card__title a:hover {
  color: var(--color-highlight);
  background-size: 100% 2px;
}

.article-card__excerpt {
  font-size: var(--font-size-sm);
  color: var(--color-text-light);
  line-height: 1.6;
}

/* --------------------- Intro/About Section --------------------- */
.intro {
  text-align: center;
}

.intro__content {
  max-width: var(--max-width-narrow);
  margin: 0 auto;
}

.intro__content p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-lg);
}

.intro__image {
  margin: var(--spacing-xl) auto;
  max-width: 600px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

/* --------------------- Quote Block --------------------- */
.quote-block {
  background: linear-gradient(135deg, var(--color-primary), var(--color-accent));
  color: var(--color-text-inverse);
  padding: var(--spacing-3xl);
  text-align: center;
}

.quote-block blockquote {
  font-family: var(--font-secondary);
  font-size: var(--font-size-xl);
  font-style: italic;
  max-width: var(--max-width-narrow);
  margin: 0 auto var(--spacing-lg);
  line-height: 1.8;
  text-align: justify;
  text-align-last: center;
}

.quote-block figcaption {
  font-size: var(--font-size-sm);
  opacity: 0.8;
}

/* --------------------- Contact Form --------------------- */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
  background: var(--color-background);
  padding: var(--spacing-2xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-weight: 500;
  margin-bottom: var(--spacing-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: 1rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px rgba(15, 52, 96, 0.1);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-checkbox {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.form-checkbox input {
  width: 20px;
  height: 20px;
  min-width: 20px;
  margin-top: 2px;
  cursor: pointer;
}

.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--gradient-highlight);
  color: var(--color-text-inverse);
  font-weight: 600;
  font-size: 1rem;
  border-radius: var(--border-radius-full);
  border: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.3), transparent);
  transition: left 0.5s ease;
}

.btn:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-glow), var(--shadow-lg);
  color: var(--color-text-inverse);
}

.btn:hover::before {
  left: 100%;
}

.btn:active {
  transform: translateY(-1px) scale(0.98);
}

.btn--full {
  width: 100%;
  text-align: center;
}

/* --------------------- Footer --------------------- */
.site-footer {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  padding: var(--spacing-xl) 0;
  text-align: center;
}

.site-footer a {
  color: var(--color-text-inverse);
  opacity: 0.8;
}

.site-footer a:hover {
  opacity: 1;
}

.back-to-top {
  display: inline-block;
  margin-bottom: var(--spacing-lg);
  font-size: var(--font-size-sm);
}

/* --------------------- Utilities --------------------- */
.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;
}

.hidden {
  display: none !important;
}

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

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(233, 69, 96, 0.4);
  }

  70% {
    box-shadow: 0 0 0 20px rgba(233, 69, 96, 0);
  }

  100% {
    box-shadow: 0 0 0 0 rgba(233, 69, 96, 0);
  }
}

@keyframes gradientFlow {
  0% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }

  100% {
    background-position: 0% 50%;
  }
}

@keyframes shimmer {
  0% {
    background-position: 200% 0;
  }

  100% {
    background-position: -200% 0;
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }

  to {
    opacity: 1;
    transform: translateX(0);
  }
}

.fade-in {
  animation: fadeIn var(--transition-slow) ease-out forwards;
}

/* Scroll reveal animations - scoped to .js-enabled so content is visible without JS */
.js-enabled .reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.js-enabled .reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.js-enabled .reveal-left {
  opacity: 0;
  transform: translateX(-30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.js-enabled .reveal-left.visible {
  opacity: 1;
  transform: translateX(0);
}

.js-enabled .reveal-right {
  opacity: 0;
  transform: translateX(30px);
  transition: all 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.js-enabled .reveal-right.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Lazy loading states */
.lazy-loading {
  background: linear-gradient(90deg, #f0f0f0 25%, #e8e8e8 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
}

img.loaded {
  animation: fadeIn 0.6s ease-out;
}

/* --------------------- Responsive --------------------- */
@media (max-width: 992px) {
  :root {
    --spacing-3xl: 3rem;
  }

  .article-gallery {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-base: 15px;
    --spacing-3xl: 2.5rem;
  }

  .hero {
    min-height: 60vh;
  }

  .article-gallery {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --font-size-base: 15px;
    --spacing-lg: 1rem;
    --spacing-xl: 1.5rem;
  }

  .contact-form {
    padding: var(--spacing-lg);
  }
}

/* --------------------- Print Styles --------------------- */
/* Comprehensive print styles are in enhancements.css */

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