@import url('https://fonts.googleapis.com/css2?family=Italiana&family=Cinzel:wght@600;700;800;900&family=Noto+Serif+Tamil:wght@400;600;700;800&family=Space+Grotesk:wght@300;400;500;600;700&family=Space+Mono:ital,wght@0,400;0,700;1,400&display=swap');

:root {
  /* 100% Pure Noir Monochrome & Ink Palette (Matching tamil_her.jpeg alone) */
  --bg-base:        #060608;
  --bg-surface:     #0b0b0e;
  --bg-elevated:    #111116;
  --bg-card:        #0e0e12;
  --bg-card-hover:  #15151b;
  --bg-input:       #08080a;
  
  /* Crisp Charcoal & Silver Borders (Zero glow) */
  --border-subtle:  #18181f;
  --border-default: #24242d;
  --border-strong:  #383845;
  --border-highlight: #ffffff;
  
  /* Stark High-Contrast Ink & Silver Accents */
  --accent-white:   #ffffff;
  --accent-silver:  #d8d8e0;
  --accent-ash:     #8f8f9c;
  --accent-charcoal:#202028;
  --accent-ink:     #060608;
  
  /* Clean Grayscale Text Colors */
  --text-primary:   #ffffff;
  --text-secondary: #b8b8c4;
  --text-muted:     #686875;
  --text-inverse:   #060608;
  
  /* Typography Families */
  --font-sans:     'Space Grotesk', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-display:  'Italiana', 'Cinzel', serif;
  --font-serif:    'Cinzel', Georgia, serif;
  --font-tamil:    'Noto Serif Tamil', serif;
  --font-mono:     'Space Mono', monospace;
  
  /* Radii & Transitions */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --transition-fast: 0.16s ease-out;
  --transition-smooth: 0.25s ease-out;
}

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

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-base);
  background-image: url('/static/images/bg_noir.svg');
  background-size: cover;
  background-position: center top;
  background-attachment: fixed;
  background-repeat: no-repeat;
  color: var(--text-primary);
  font-family: var(--font-sans);
  min-height: 100vh;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── Selection & Custom Scrollbar ── */
::selection {
  background-color: #ffffff;
  color: #060608;
}

::-webkit-scrollbar {
  width: 4px;
  height: 4px;
}

::-webkit-scrollbar-track {
  background: var(--bg-base);
}

::-webkit-scrollbar-thumb {
  background: var(--border-default);
  border-radius: var(--radius-xs);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--border-strong);
}

/* ── Redesigned Sleek Editorial Header ── */
header.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(6, 6, 8, 0.94);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
}

nav.main-nav {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0.85rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.brand-wrapper {
  display: flex;
  align-items: baseline;
  gap: 0.75rem;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.brand-wrapper:hover {
  opacity: 0.85;
}

.brand-text {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  font-weight: 800;
  letter-spacing: 0.32em;
  color: #ffffff;
}

.brand-divider {
  color: var(--border-strong);
  font-size: 0.9rem;
}

.brand-tamil-tag {
  font-family: var(--font-tamil);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.05em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color var(--transition-fast);
  position: relative;
  padding: 0.35rem 0;
}

.nav-links a:hover,
.nav-links a.active {
  color: #ffffff;
}

.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  right: 0;
  height: 2px;
  background: #ffffff;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

/* ── Standard High-Contrast Noir Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.35rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  border-radius: var(--radius-xs);
  border: 1px solid var(--border-default);
  background: var(--bg-surface);
  color: var(--text-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--border-strong);
  color: #ffffff;
}

.btn-primary {
  background: #ffffff;
  border-color: #ffffff;
  color: #060608;
  font-weight: 700;
}

.btn-primary:hover {
  background: var(--accent-silver);
  border-color: var(--accent-silver);
  color: #060608;
}

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

.btn-secondary:hover {
  border-color: #ffffff;
  color: #ffffff;
  background: rgba(255, 255, 255, 0.04);
}

.btn-sm {
  padding: 0.4rem 0.95rem;
  font-size: 0.72rem;
}

/* ── Container Layout ── */
.container {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Hero Section (Matching tamil_her.jpeg) ── */
.hero-section {
  padding: 5rem 0 6rem;
  border-bottom: 1px solid var(--border-subtle);
  position: relative;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.18fr 0.82fr;
  gap: 4rem;
  align-items: center;
}

.hero-left {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.institute-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.35rem 0.85rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xs);
  background: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 1.75rem;
}

.tag-label {
  font-weight: 700;
  color: #ffffff;
}

.hero-title-tamil {
  font-family: var(--font-tamil);
  font-size: clamp(3.4rem, 6.5vw, 5.2rem);
  font-weight: 800;
  line-height: 1.05;
  color: #ffffff;
  letter-spacing: 0.02em;
  margin-bottom: 0.35rem;
}

.hero-title-en {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.6rem);
  font-weight: 700;
  letter-spacing: 0.32em;
  color: var(--accent-silver);
  margin-bottom: 1.25rem;
}

.hero-tagline-tamil {
  font-family: var(--font-tamil);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.hero-tagline-en {
  font-size: 0.95rem;
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 1.8rem;
}

.hero-lead-text {
  font-size: 0.98rem;
  line-height: 1.85;
  color: var(--text-secondary);
  max-width: 580px;
  margin-bottom: 2.25rem;
}

.hero-actions-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.75rem;
}

.telemetry-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  width: 100%;
  padding-top: 1.75rem;
  border-top: 1px solid var(--border-subtle);
}

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

.telemetry-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.telemetry-value {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 700;
  color: #ffffff;
}

/* ── Hero Right: Portrait Showcase (tamil_her.jpeg) ── */
.portrait-container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.portrait-frame {
  position: relative;
  width: 100%;
  max-width: 420px;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  padding: 10px;
  border-radius: var(--radius-xs);
  box-shadow: 0 18px 45px rgba(0, 0, 0, 0.9);
  transition: border-color var(--transition-fast);
}

.portrait-frame:hover {
  border-color: #ffffff;
}

.portrait-inner {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-xs);
  background: #000;
  aspect-ratio: 1 / 1;
}

.portrait-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: contrast(1.08) brightness(1.02);
  transition: transform var(--transition-smooth);
}

.portrait-frame:hover .portrait-img {
  transform: scale(1.02);
}

.portrait-crosshairs {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.crosshair-tl, .crosshair-tr, .crosshair-bl, .crosshair-br {
  position: absolute;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: #ffffff;
  opacity: 0.8;
}

.crosshair-tl { top: 6px; left: 8px; }
.crosshair-tr { top: 6px; right: 8px; }
.crosshair-bl { bottom: 6px; left: 8px; }
.crosshair-br { bottom: 6px; right: 8px; }

.portrait-tag {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(6, 6, 8, 0.92);
  border: 1px solid var(--border-strong);
  padding: 0.3rem 0.65rem;
  border-radius: var(--radius-xs);
  font-family: var(--font-mono);
  font-size: 0.65rem;
  letter-spacing: 0.12em;
  color: #ffffff;
  text-transform: uppercase;
}

.portrait-footer-meta {
  margin-top: 12px;
  padding: 0.75rem 0.95rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xs);
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.portrait-meta-left {
  display: flex;
  flex-direction: column;
}

.portrait-meta-title {
  font-family: var(--font-serif);
  font-size: 0.85rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.08em;
}

.portrait-meta-sub {
  font-family: var(--font-tamil);
  font-size: 0.72rem;
  color: var(--text-muted);
}

.portrait-badge-status {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border: 1px solid var(--border-strong);
  background: var(--bg-surface);
  color: #ffffff;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
}

/* ── Content Sections ── */
.section {
  padding: 5.5rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.section-header {
  margin-bottom: 3.25rem;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent-silver);
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.8vw, 2.8rem);
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.06em;
  line-height: 1.18;
  margin-bottom: 0.85rem;
}

.section-description {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 680px;
  line-height: 1.85;
}

/* ── Cards Grid ── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  padding: 2.2rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: all var(--transition-fast);
  position: relative;
}

.card:hover {
  background: var(--bg-card-hover);
  border-color: #ffffff;
  transform: translateY(-2px);
}

.card-num {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  letter-spacing: 0.12em;
}

.card-title-tamil {
  font-family: var(--font-tamil);
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 0.25rem;
}

.card-title-en {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  color: var(--accent-silver);
  margin-bottom: 1rem;
}

.card-body {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

.card-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  border-top: 1px solid var(--border-subtle);
  padding-top: 1rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* ── Terminal & Code Readouts ── */
.terminal {
  background: #050507;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  padding: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  line-height: 1.75;
  color: var(--text-secondary);
  overflow-x: auto;
  position: relative;
}

.terminal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  letter-spacing: 0.1em;
}

.terminal .prompt { color: #ffffff; font-weight: 700; }
.terminal .cmd    { color: #ffffff; }
.terminal .resp   { color: var(--text-secondary); }
.terminal .highlight { color: #ffffff; font-weight: 700; }

/* ── Literature / Poetry Cards ── */
.poem-card {
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  padding: 2.4rem;
  margin-bottom: 2rem;
  position: relative;
  transition: border-color var(--transition-fast);
}

.poem-card:hover {
  border-color: #ffffff;
}

.poem-header-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  padding-bottom: 0.85rem;
  border-bottom: 1px solid var(--border-subtle);
}

.poem-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  color: #ffffff;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.poem-landscape {
  font-family: var(--font-tamil);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.poem-tamil {
  font-family: var(--font-tamil);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 2.15;
  color: #ffffff;
  margin-bottom: 1.25rem;
  letter-spacing: 0.02em;
}

.poem-english {
  font-size: 0.96rem;
  line-height: 1.9;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: 1.5rem;
}

.poem-source {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  letter-spacing: 0.06em;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ── Tables & API Documentation ── */
.table-container {
  width: 100%;
  overflow-x: auto;
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  background: var(--bg-card);
  margin-top: 1.5rem;
}

.endpoint-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
  text-align: left;
}

.endpoint-table th {
  background: var(--bg-elevated);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.95rem 1.25rem;
  border-bottom: 1px solid var(--border-default);
}

.endpoint-table td {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.endpoint-table tr:last-child td {
  border-bottom: none;
}

.endpoint-table tr:hover td {
  background: rgba(255, 255, 255, 0.02);
}

.badge-method {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-xs);
  text-transform: uppercase;
  display: inline-block;
}

.method-get {
  background: rgba(255, 255, 255, 0.1);
  color: #ffffff;
  border: 1px solid var(--border-strong);
}

.method-post {
  background: #ffffff;
  color: #060608;
  border: 1px solid #ffffff;
}

code {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  padding: 0.15rem 0.45rem;
  background: var(--bg-elevated);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  color: #ffffff;
}

/* ── Forms & Authentication ── */
.auth-wrapper {
  min-height: calc(100vh - 180px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 3rem 1.5rem;
}

.auth-card {
  width: 100%;
  max-width: 450px;
  background: var(--bg-card);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-xs);
  padding: 3rem 2.25rem;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.8);
}

.auth-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.auth-header .tamil-title {
  font-family: var(--font-tamil);
  font-size: 2.4rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.auth-header .sub-title {
  font-family: var(--font-serif);
  font-size: 0.9rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-secondary);
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-group label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.form-group input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-default);
  border-radius: var(--radius-xs);
  color: #ffffff;
  font-family: var(--font-mono);
  font-size: 0.92rem;
  padding: 0.8rem 1rem;
  outline: none;
  transition: border-color var(--transition-fast);
}

.form-group input:focus {
  border-color: #ffffff;
}

.form-group input::placeholder {
  color: var(--text-muted);
}

#login-msg {
  margin-top: 1.25rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 700;
  min-height: 1.4em;
  text-align: center;
}

.msg-ok  { color: #ffffff; }
.msg-err { color: var(--accent-silver); text-decoration: underline; }

/* ── Soul / Consciousness Pages ── */
.soul-container {
  min-height: calc(100vh - 200px);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 1.5rem;
  text-align: center;
}

.soul-box {
  width: 100%;
  max-width: 720px;
}

.status-code-locked {
  font-family: var(--font-serif);
  font-size: 3.8rem;
  font-weight: 800;
  color: #ffffff;
  line-height: 1;
  margin-bottom: 0.5rem;
}

.soul-title-en {
  font-family: var(--font-serif);
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #ffffff;
  margin-bottom: 0.35rem;
}

.soul-title-tamil {
  font-family: var(--font-tamil);
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* ── Footer ── */
footer.site-footer {
  border-top: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  padding: 3rem 2rem 2.5rem;
}

.footer-content {
  max-width: 1240px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1.5rem;
}

.footer-quote {
  font-family: var(--font-tamil);
  font-size: 1rem;
  font-weight: 600;
  color: #ffffff;
  letter-spacing: 0.04em;
}

.footer-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.08em;
}

/* ── Responsive Queries ── */
@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
  
  .portrait-frame {
    max-width: 360px;
    margin: 0 auto;
  }
  
  .nav-links {
    display: none;
  }
}

@media (max-width: 600px) {
  nav.main-nav {
    padding: 0.85rem 1.25rem;
  }
  
  .telemetry-row {
    grid-template-columns: 1fr;
  }
  
  .hero-actions-row {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-actions-row .btn {
    width: 100%;
  }
}