/* ==========================================================================
   ΛΟΓΟΤΕΧΝΩ (logotexnw.com) • OFFICIAL PUBLIC WORKSHOP WEBSITE STYLES
   Authentic @logotexnw Brand Identity:
   - Primary Accent: Petrol Teal (#0E6477)
   - Primary Ink: Calligraphic Ink Black (#0A0907)
   - Paper Surface: Warm Paper (#FDFCF8) & Warm Cream (#EDE2D3)
   - Botanical Accent: Sage Leaf (#64705E) & Warm Ochre (#D9A76A)
   Subtractive Design Laws L0–L8 & Canonical Scale (R_kanon = 1.0000)
   ========================================================================== */

:root {
  /* Authentic @logotexnw Palette */
  --c-petrol: #0E6477;
  --c-petrol-hover: #0A4E5D;
  --c-petrol-soft: rgba(14, 100, 119, 0.10);
  --c-parchment: #FDFCF8;
  --c-sand: #EDE2D3;
  --c-sand-light: #F5F0E6;
  --c-charcoal: #0A0907;
  --c-charcoal-muted: #4A4843;
  --c-sage: #64705E;
  --c-sage-soft: rgba(100, 112, 94, 0.14);
  --c-ochre: #D9A76A;

  /* Theme Surface Tokens (Light-First per Law L0) */
  --bg-page: var(--c-parchment);
  --bg-alt: var(--c-sand-light);
  --bg-card: #FFFFFF;
  --text-main: var(--c-charcoal);
  --text-muted: var(--c-charcoal-muted);
  --border-subtle: rgba(14, 100, 119, 0.14);
  --shadow-soft: 0 10px 30px rgba(10, 9, 7, 0.05);

  /* Typography */
  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-mono: 'Courier Prime', 'Courier New', Courier, monospace;

  /* Law L7: Canonical Font Scale (7 distinct sizes <= 8) */
  --fs-xs: 0.75rem;     /* 12px */
  --fs-sm: 0.875rem;    /* 14px */
  --fs-base: 1rem;      /* 16px */
  --fs-md: 1.125rem;    /* 18px */
  --fs-lg: 1.5rem;      /* 24px */
  --fs-xl: 2.25rem;     /* 36px */
  --fs-2xl: 3.25rem;    /* 52px */

  /* Law L7: Canonical Border Radii (4 distinct radii <= 4) */
  --r-sm: 8px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-pill: 9999px;
}

body.theme-dark {
  --bg-page: #11181A;
  --bg-alt: #172124;
  --bg-card: #1D2A2E;
  --text-main: #FDFCF8;
  --text-muted: #B8C4C7;
  --c-petrol: #4DB2C7;
  --c-petrol-hover: #6BC5D8;
  --border-subtle: rgba(253, 252, 248, 0.12);
  --shadow-soft: 0 12px 32px rgba(0, 0, 0, 0.35);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  background-color: var(--bg-page);
  color: var(--text-main);
  line-height: 1.65;
  font-variant-numeric: tabular-nums;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Law L1: Single-Row Top Bar (height: 56px, <= 7 items) */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 100;
  height: 56px;
  background: rgba(253, 252, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

body.theme-dark .top-bar {
  background: rgba(17, 24, 26, 0.92);
}

.top-bar-inner {
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand-anchor {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
}

.brand-icon {
  width: 36px;
  height: 36px;
}

.brand-wordmark-img {
  height: 34px;
  width: auto;
}

body.theme-dark .brand-wordmark-img {
  filter: invert(1) brightness(1.1);
}

.primary-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.primary-nav a {
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-muted);
}

.primary-nav a:hover {
  color: var(--c-petrol);
}

.top-actions {
  display: flex;
  align-items: center;
  gap: 0.625rem;
}

.icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--r-pill);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-main);
  font-size: var(--fs-base);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.icon-btn:hover {
  border-color: var(--c-petrol);
  color: var(--c-petrol);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
}

.btn-compact {
  padding: 0.45rem 1rem;
  font-size: var(--fs-xs);
}

.btn-full {
  width: 100%;
}

.btn-primary {
  background-color: var(--c-petrol);
  color: #FDFCF8;
}

body.theme-dark .btn-primary {
  color: #11181A;
}

.btn-primary:hover {
  background-color: var(--c-petrol-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: transparent;
  color: var(--text-main);
  border-color: var(--border-subtle);
}

.btn-secondary:hover {
  border-color: var(--c-petrol);
  color: var(--c-petrol);
  background-color: var(--c-petrol-soft);
}

.btn-text {
  background: none;
  border: none;
  color: var(--c-petrol);
  font-size: var(--fs-sm);
  font-weight: 600;
  cursor: pointer;
  padding: 0;
}

.btn-text:hover {
  text-decoration: underline;
}

.inline-link {
  color: var(--c-petrol);
  font-weight: 600;
  text-decoration: underline;
  text-underline-offset: 3px;
}

/* Typography Primitives */
.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--c-petrol);
  margin-bottom: 0.5rem;
}

.hero-heading {
  font-family: var(--font-serif);
  font-size: var(--fs-2xl);
  font-weight: 600;
  line-height: 1.12;
  margin-bottom: 1.25rem;
}

.hero-heading em {
  font-style: italic;
  color: var(--c-petrol);
}

.section-heading {
  font-family: var(--font-serif);
  font-size: var(--fs-xl);
  font-weight: 600;
  line-height: 1.18;
  margin-bottom: 0.75rem;
}

.card-heading {
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  font-weight: 600;
  line-height: 1.25;
  margin-bottom: 0.5rem;
}

.hero-lead,
.section-sub {
  font-size: var(--fs-md);
  color: var(--text-muted);
  max-width: 62ch;
}

.card-body {
  font-size: var(--fs-base);
  color: var(--text-muted);
}

/* Signature @logotexnw Petrol Teal Diamond Divider */
.diamond-rule {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 1.25rem 0;
  color: var(--c-petrol);
  font-size: var(--fs-xs);
}

.diamond-rule::before,
.diamond-rule::after {
  content: "";
  flex: 1;
  height: 2px;
  background-color: var(--c-petrol);
  opacity: 0.45;
}

/* Hero Layout (Grid Template #1: 1.15fr 0.85fr) */
.hero-section {
  padding: 4.5rem 0;
  background: radial-gradient(circle at 82% 20%, rgba(14, 100, 119, 0.08) 0%, transparent 55%),
              radial-gradient(circle at 12% 80%, rgba(237, 226, 211, 0.55) 0%, transparent 50%);
  border-bottom: 1px solid var(--border-subtle);
}

.hero-grid,
.register-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3rem;
  align-items: center;
}

.hero-cta-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.875rem;
  margin: 1.75rem 0 2.25rem;
}

.hero-metrics {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-subtle);
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-value {
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--c-petrol);
}

.metric-label {
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.hero-frame {
  position: relative;
  border-radius: var(--r-lg);
  background: var(--bg-card);
  padding: 2rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid var(--border-subtle);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.25rem;
}

.hero-emblem-main {
  width: 240px;
  height: 240px;
  object-fit: contain;
}

.hero-illus-img {
  width: 100%;
  max-width: 380px;
  height: auto;
  border-radius: var(--r-md);
}

.hero-address-pill {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--c-petrol);
  background: var(--c-petrol-soft);
  padding: 0.4rem 1rem;
  border-radius: var(--r-pill);
  text-align: center;
}

/* Sections */
.section {
  padding: 4.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-alt {
  background-color: var(--bg-alt);
}

.section-intro {
  max-width: 720px;
  margin-bottom: 2.5rem;
}

.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
  margin-bottom: 2.5rem;
}

/* Cards & Grids (Grid Template #2: repeat(3, minmax(0, 1fr)) & #3: repeat(2, minmax(0, 1fr))) */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
  padding: 1.75rem;
  box-shadow: var(--shadow-soft);
}

.pillars-grid,
.space-gallery {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.pillar-index {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--c-petrol);
  margin-bottom: 0.35rem;
}

/* Workshops Filter & Grid */
.filter-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.filter-pill {
  padding: 0.45rem 1rem;
  border-radius: var(--r-pill);
  border: 1px solid var(--border-subtle);
  background: var(--bg-card);
  color: var(--text-muted);
  font-size: var(--fs-xs);
  font-weight: 600;
  cursor: pointer;
}

.filter-pill.active,
.filter-pill:hover {
  background: var(--c-petrol);
  color: #FDFCF8;
  border-color: var(--c-petrol);
}

body.theme-dark .filter-pill.active,
body.theme-dark .filter-pill:hover {
  color: #11181A;
}

.workshops-grid,
.field-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.workshop-card {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 1rem;
}

.workshop-card[hidden] {
  display: none;
}

.workshop-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.tag-pill {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--r-pill);
  background: var(--c-petrol-soft);
  color: var(--c-petrol);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 700;
}

.duration-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  color: var(--text-muted);
}

.workshop-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 1rem;
  border-top: 1px solid var(--border-subtle);
}

/* Space Gallery */
.space-card {
  padding: 0;
  overflow: hidden;
}

.space-img {
  width: 100%;
  height: 300px;
  object-fit: cover;
  object-position: top center;
}

.space-caption {
  padding: 1.5rem;
}

/* Founder Section (Grid Template #4: 0.75fr 1.25fr) */
.founder-grid {
  display: grid;
  grid-template-columns: 0.75fr 1.25fr;
  gap: 3rem;
  align-items: center;
}

.founder-portrait-wrap {
  border-radius: var(--r-lg);
  overflow: hidden;
  border: 1px solid var(--border-subtle);
  box-shadow: var(--shadow-soft);
}

.founder-portrait {
  width: 100%;
  height: 440px;
  object-fit: cover;
}

.founder-text {
  font-size: var(--fs-base);
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.founder-book-callout {
  margin-top: 1.5rem;
  padding: 1.25rem;
  border-radius: var(--r-md);
  background: var(--bg-alt);
  border: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.book-thumb {
  width: 68px;
  height: 96px;
  object-fit: cover;
  border-radius: var(--r-sm);
  flex-shrink: 0;
}

.book-callout-title {
  font-family: var(--font-serif);
  font-size: var(--fs-lg);
  font-weight: 600;
}

.book-callout-sub {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  margin: 0.25rem 0 0.5rem;
}

/* Registration & Contact */
.contact-details {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-row {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.contact-label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--c-petrol);
}

.social-links {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.register-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-group label {
  font-size: var(--fs-xs);
  font-weight: 600;
  color: var(--text-main);
}

.field-group input,
.field-group select,
.field-group textarea {
  font-family: var(--font-sans);
  font-size: var(--fs-sm);
  padding: 0.65rem 0.875rem;
  border-radius: var(--r-sm);
  border: 1px solid var(--border-subtle);
  background: var(--bg-page);
  color: var(--text-main);
}

.field-group input:focus,
.field-group select:focus,
.field-group textarea:focus {
  outline: 2px solid var(--c-petrol);
  border-color: var(--c-petrol);
}

.form-feedback {
  font-size: var(--fs-sm);
  color: var(--c-petrol);
  font-weight: 600;
  min-height: 1.4rem;
}

/* Workshop Syllabus Modal */
.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(10, 9, 7, 0.72);
  backdrop-filter: blur(6px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}

.modal-backdrop.open {
  display: flex;
}

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-lg);
  max-width: 620px;
  width: 100%;
  padding: 2rem;
  box-shadow: var(--shadow-soft);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.syllabus-list {
  margin: 1.25rem 0 1.75rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: var(--fs-sm);
  color: var(--text-main);
}

/* Footer */
.site-footer {
  padding: 2.5rem 0;
  background: var(--bg-card);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-logo-svg {
  height: 64px;
  width: auto;
}

body.theme-dark .footer-logo-svg {
  filter: invert(1) hue-rotate(180deg) brightness(1.15);
}

.footer-copy {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  margin-top: 0.5rem;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--c-petrol);
}

/* Toast */
.toast {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  z-index: 300;
  background: var(--c-petrol);
  color: #FDFCF8;
  padding: 0.75rem 1.25rem;
  border-radius: var(--r-pill);
  font-size: var(--fs-sm);
  opacity: 0;
  transform: translateY(1rem);
  pointer-events: none;
  transition: opacity 0.25s ease, transform 0.25s ease;
}

.toast.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 960px) {
  .hero-grid,
  .register-grid,
  .founder-grid,
  .pillars-grid,
  .space-gallery,
  .workshops-grid,
  .field-row {
    grid-template-columns: 1fr;
  }

  .primary-nav {
    display: none;
  }
}