/* ============================================================
   DigiVoid — styles.css
   Dark gallery aesthetic · Mobile-first · No build step
   ============================================================ */

/* ------------------------------------------------------------
   Custom properties
   ------------------------------------------------------------ */
:root {
  --color-bg:          #0a0a0f;
  --color-bg-card:     #12121a;
  --color-bg-elevated: #1a1a26;
  --color-text:        #e8e8f0;
  --color-text-muted:  #7878a0;
  --color-accent:      #8b5cf6;
  --color-accent-hover:#a78bfa;
  --color-border:      rgba(255, 255, 255, 0.07);

  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, sans-serif;

  --max-width:      1200px;
  --header-height:  4rem;
  --radius:         0.75rem;
  --transition:     0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

/* ------------------------------------------------------------
   Utility: container
   ------------------------------------------------------------ */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--header-height);
  display: flex;
  align-items: center;
  padding: 0 1.5rem;
  background: rgba(10, 10, 15, 0.82);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
  transition: background var(--transition);
}

.site-header.scrolled {
  background: rgba(10, 10, 15, 0.97);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

/* Logo */
.logo {
  font-family: var(--font-display);
  font-size: 1.375rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--color-text);
  white-space: nowrap;
}

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

/* Nav links — hidden on mobile */
.header-nav {
  display: none;
  align-items: center;
  gap: 2rem;
}

@media (min-width: 768px) {
  .header-nav {
    display: flex;
  }
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link:focus-visible {
  color: var(--color-text);
  outline: none;
}

/* Language toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  border: 1px solid var(--color-border);
  border-radius: 2rem;
  padding: 0.25rem 0.625rem;
  flex-shrink: 0;
}

.lang-sep {
  font-size: 0.75rem;
  color: var(--color-border);
  user-select: none;
}

.lang-option {
  background: transparent;
  border: none;
  padding: 0.1rem 0.25rem;
  font-family: var(--font-body);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: 1rem;
  transition: color var(--transition);
}

.lang-option:hover,
.lang-option:focus-visible {
  color: var(--color-text);
  outline: none;
}

.lang-option.active {
  color: var(--color-accent);
  font-weight: 600;
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: calc(var(--header-height) + 4rem) 1.5rem 5rem;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.35;
}

.hero-bg::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    to bottom,
    rgba(10, 10, 15, 0.2) 0%,
    rgba(10, 10, 15, 0.55) 55%,
    rgba(10, 10, 15, 1) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.hero-label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 6vw, 4.75rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.03em;
}

.hero > .hero-content > p {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--color-text-muted);
  max-width: 580px;
  line-height: 1.7;
}

/* Primary button */
.btn-primary {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.875rem 2rem;
  border-radius: 3rem;
  transition: background var(--transition), transform var(--transition);
  margin-top: 0.5rem;
}

.btn-primary:hover,
.btn-primary:focus-visible {
  background: var(--color-accent-hover);
  transform: translateY(-2px);
  outline: 2px solid var(--color-accent-hover);
  outline-offset: 3px;
}

/* ============================================================
   SHARED SECTION STYLES
   ============================================================ */
.section {
  padding: 6rem 1.5rem;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-label {
  display: inline-block;
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: 0.875rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 520px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ============================================================
   PILLARS
   ============================================================ */
.pillars {
  background: var(--color-bg);
}

.pillars-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 600px) {
  .pillars-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 1024px) {
  .pillars-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.pillar-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--transition), transform var(--transition);
  display: flex;
  flex-direction: column;
}

.pillar-card:hover {
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-4px);
}

.pillar-image {
  position: relative;
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--color-bg-elevated);
}

.pillar-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.45s ease;
}

.pillar-card:hover .pillar-image img {
  transform: scale(1.05);
}

.pillar-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
}

.pillar-number {
  font-family: var(--font-display);
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-accent);
}

.pillar-body h3 {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.3;
}

.pillar-body p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

/* ============================================================
   ABOUT
   ============================================================ */
.about {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  align-items: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.about-image {
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--color-bg-elevated);
  aspect-ratio: 3 / 2;
}

.about-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.about-content h2 {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.15;
}

.about-content p {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.75;
}

/* ============================================================
   CONTACT / LOCATION
   ============================================================ */
.contact {
  background: var(--color-bg);
}

.contact-grid {
  display: flex;
  justify-content: center;
  max-width: 720px;
  margin: 0 auto;
}

.contact-grid .contact-item {
  width: 100%;
  max-width: 360px;
}

.contact-item {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-icon {
  font-size: 1.75rem;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.contact-item h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.contact-item p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.contact-email {
  color: var(--color-accent);
  font-weight: 500;
  transition: color var(--transition);
}

.contact-email:hover,
.contact-email:focus-visible {
  color: var(--color-accent-hover);
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  padding: 3rem 1.5rem;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  align-items: center;
  text-align: center;
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    text-align: left;
  }
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

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

.footer-tagline {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  margin-top: 0.25rem;
}

.footer-right {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.875rem;
}

@media (min-width: 640px) {
  .footer-right {
    align-items: flex-end;
  }
}

.footer-copyright {
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ============================================================
   ACCESSIBILITY — focus-visible ring
   ============================================================ */
:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

/* ============================================================
   MANIFESTO
   ============================================================ */
.manifesto {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.manifesto-inner {
  max-width: 760px;
  margin: 0 auto;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
}

.manifesto-headline {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3.5vw, 2.375rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
}

.manifesto-body {
  display: flex;
  flex-direction: column;
  gap: 1.125rem;
  text-align: left;
}

.manifesto-body p {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.85;
}

.manifesto-closing {
  font-family: var(--font-display);
  font-size: 1.1875rem;
  font-weight: 600;
  color: var(--color-accent);
  letter-spacing: 0.01em;
  margin-top: 0.5rem;
}

/* ============================================================
   COMMUNITY
   ============================================================ */
.community {
  background: var(--color-bg-card);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.activities-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-bottom: 3rem;
}

@media (min-width: 480px) {
  .activities-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .activities-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.activity-card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.625rem;
  transition: border-color var(--transition), transform var(--transition);
}

.activity-card:hover {
  border-color: rgba(139, 92, 246, 0.4);
  transform: translateY(-3px);
}

.activity-icon {
  font-size: 1.75rem;
  line-height: 1;
  margin-bottom: 0.25rem;
}

.activity-card h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: -0.01em;
}

.activity-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.community-closing {
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.8;
  text-align: center;
  max-width: 720px;
  margin: 0 auto;
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}