/* ============================================================
   ATTENTION DYNAMICS — Component Styles
   ============================================================
   Reusable, composable UI components referenced across all
   pages. Each component is self-contained and depends only
   on tokens.css for custom properties.
   
   Depends on: tokens.css, base.css
   ============================================================ */


/* --------------------------------------------------------
   1. TECHNICAL TAG
   --------------------------------------------------------
   Section labels like 'SEC_01 // INFRASTRUCTURE_OVERVIEW'
   Monospaced, uppercase, cyan accent.
   -------------------------------------------------------- */

.technical-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cyan);
  letter-spacing: var(--tracking-wider);
  margin-bottom: 24px;
  opacity: 0.6;
  text-transform: uppercase;
  line-height: 1;
}


/* --------------------------------------------------------
   2. SECTION CONTAINER & HEADER
   -------------------------------------------------------- */

.section-container {
  max-width: var(--container-lg);
  width: 100%;
}

.section-header {
  margin-bottom: 48px;
  max-width: var(--container-sm);
}

.section-header h2 {
  margin-bottom: 18px;
}

.section-header p {
  color: var(--color-gray-light);
}


/* --------------------------------------------------------
   3. BUTTONS — CTA Hierarchy
   --------------------------------------------------------
   Primary: bold blue fill, high contrast, prominent
   Secondary: glass surface, muted, supportive
   -------------------------------------------------------- */

.btn {
  font-family: var(--font-primary);
  font-size: var(--text-base);
  font-weight: 500;
  padding: 12px 24px;
  border-radius: 5px;
  letter-spacing: 0.01em;
  display: inline-block;
  cursor: pointer;
  transition: var(--transition-smooth);
  text-align: center;
  line-height: 1;
  border: 1px solid transparent;
}

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

/* Primary — prominent, actionable */
.btn-primary {
  background-color: var(--color-blue);
  color: var(--color-pure-white);
  border-color: var(--color-blue);
  box-shadow: 0 0 8px rgba(0, 102, 255, 0.06),
              0 2px 6px rgba(0, 102, 255, 0.04);
}

.btn-primary:hover {
  background-color: rgba(0, 102, 255, 0.9);
  border-color: var(--color-cyan);
  box-shadow: 0 0 12px rgba(0, 102, 255, 0.08),
              0 3px 10px rgba(0, 102, 255, 0.06);
  transform: translateY(-1px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: 0 0 12px rgba(0, 102, 255, 0.1);
}

/* Secondary — muted, supportive */
.btn-secondary {
  background-color: rgba(14, 21, 43, 0.25);
  color: var(--color-gray-light);
  border-color: rgba(229, 231, 235, 0.03);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

.btn-secondary:hover {
  color: var(--color-white);
  border-color: rgba(229, 231, 235, 0.12);
  background-color: rgba(229, 231, 235, 0.03);
  transform: translateY(-1px);
}

.btn-secondary:active {
  transform: translateY(0);
}


/* --------------------------------------------------------
   4. CARD — Generic card component
   --------------------------------------------------------
   Base card surface with glass-like background,
   subtle border, and restrained hover lift.
   -------------------------------------------------------- */

.card {
  background-color: rgba(14, 21, 43, 0.18);
  border: var(--border-panel);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: var(--transition-smooth);
}

.card:hover {
  border-color: rgba(0, 102, 255, 0.15);
  background-color: rgba(14, 21, 43, 0.28);
  transform: translateY(-1px);
}

.card-num {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--color-cyan);
  margin-bottom: 20px;
}

.card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-pure-white);
}

.card p {
  font-size: var(--text-md);
  line-height: var(--leading-normal);
  color: var(--color-gray-light);
}

/* Edge card variant — inherits from .card pattern */
.edge-card {
  background-color: rgba(14, 21, 43, 0.18);
  border: var(--border-panel);
  border-radius: var(--radius-md);
  padding: 36px 30px;
  transition: var(--transition-smooth);
}

.edge-card:hover {
  border-color: rgba(0, 102, 255, 0.15);
  background-color: rgba(14, 21, 43, 0.28);
  transform: translateY(-1px);
}

.edge-card h3 {
  font-size: 1.25rem;
  margin-bottom: var(--space-sm);
  color: var(--color-pure-white);
}

.edge-card p {
  font-size: var(--text-md);
  line-height: var(--leading-normal);
  color: var(--color-gray-light);
}


/* --------------------------------------------------------
   5. PANEL — Telemetry panel base
   -------------------------------------------------------- */

.panel {
  background-color: rgba(14, 21, 43, 0.2);
  border: var(--border-panel);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.telemetry-panel {
  background-color: rgba(14, 21, 43, 0.2);
  border: var(--border-panel);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.panel-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-cyan);
  letter-spacing: var(--tracking-wider);
  border-bottom: var(--border-dashed-subtle);
  padding-bottom: 10px;
  margin-bottom: 20px;
  font-weight: 500;
  text-transform: uppercase;
}


/* --------------------------------------------------------
   6. TERMINAL — Terminal UI component
   --------------------------------------------------------
   macOS-style terminal window with colored dots,
   command lines, and form inputs.
   -------------------------------------------------------- */

.terminal,
.contact-terminal {
  max-width: var(--container-hero);
  margin: 0 auto;
  background-color: var(--color-dark-terminal);
  border: 1px solid rgba(229, 231, 235, 0.07);
  border-radius: 5px;
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  text-align: left;
}

.terminal-bar {
  background-color: rgba(229, 231, 235, 0.02);
  border-bottom: var(--border-dashed-subtle);
  padding: 10px var(--space-md);
  display: flex;
  align-items: center;
}

.term-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  margin-right: 6px;
}

.term-dot.close    { background-color: var(--color-error); }
.term-dot.minimize { background-color: var(--color-warning); }
.term-dot.expand   { background-color: var(--color-success); }

.terminal-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-gray-light);
  margin-left: 10px;
}

.terminal-window {
  padding: var(--space-lg);
}

.terminal-output {
  margin-bottom: var(--space-lg);
}

.cmd-line {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  margin-bottom: var(--space-xs);
}

.prompt {
  color: var(--color-cyan);
  margin-right: 6px;
}

.cmd-response.success {
  color: var(--color-success);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  margin-bottom: var(--space-sm);
}

.cmd-text {
  font-size: var(--text-base);
  color: var(--color-gray-light);
  margin-bottom: var(--space-md);
}

/* Terminal form elements */
.terminal-form {
  border-top: var(--border-dashed);
  padding-top: var(--space-lg);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.form-row {
  display: flex;
  align-items: flex-start;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  border-bottom: var(--border-subtle);
  padding-bottom: var(--space-xs);
}

.form-label {
  color: var(--color-cyan);
  flex-shrink: 0;
  padding-top: 2px;
}

.form-input,
.form-textarea {
  background: transparent;
  border: none;
  outline: none;
  font-family: var(--font-mono);
  font-size: var(--text-base);
  color: var(--color-white);
  width: 100%;
  padding-left: var(--space-xs);
}

.form-textarea {
  resize: vertical;
  min-height: 60px;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: rgba(156, 163, 175, 0.3);
}

.form-submit-btn {
  align-self: flex-start;
  background-color: rgba(0, 102, 255, 0.05);
  color: var(--color-blue);
  border: 1px solid rgba(0, 102, 255, 0.25);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 8px 18px;
  border-radius: var(--radius-xs);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.form-submit-btn:hover {
  background-color: rgba(0, 194, 255, 0.05);
  color: var(--color-cyan);
  border-color: var(--color-cyan);
}

/* Terminal mail link */
.mail-anchor-container {
  margin-top: var(--space-sm);
  border-top: var(--border-dashed-subtle);
  padding-top: var(--space-sm);
}

.terminal-mail-link {
  font-family: var(--font-primary);
  font-size: clamp(1.2rem, 3vw, 1.6rem);
  font-weight: 500;
  color: var(--color-pure-white);
  border-bottom: 1px dashed var(--color-blue);
  padding-bottom: 2px;
  display: inline-block;
}

.terminal-mail-link:hover {
  color: var(--color-cyan);
  border-color: var(--color-cyan);

}


/* --------------------------------------------------------
   7. PAPER ITEM — Research paper card
   -------------------------------------------------------- */

.paper-item {
  background-color: rgba(14, 21, 43, 0.15);
  border: var(--border-panel);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: var(--transition-smooth);
}

.paper-item:hover {
  border-color: rgba(0, 102, 255, 0.12);
  background-color: rgba(14, 21, 43, 0.25);
}

.paper-header {
  display: flex;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  border-bottom: var(--border-dashed-subtle);
  padding-bottom: 10px;
  margin-bottom: var(--space-md);
}

.paper-id {
  color: var(--color-cyan);
  text-transform: uppercase;
}

.paper-date {
  color: var(--color-gray-light);
  text-transform: uppercase;
}

.paper-item h3 {
  font-size: 1.35rem;
  margin-bottom: var(--space-xs);
  color: var(--color-pure-white);
}

.paper-authors {
  font-size: var(--text-sm);
  color: var(--color-gray-light);
  font-style: italic;
  margin-bottom: var(--space-md);
}

.paper-abstract {
  font-size: 0.92rem;
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-lg);
}

.paper-abstract strong {
  font-family: var(--font-mono);
  color: var(--color-cyan);
  font-size: 11px;
}

.paper-actions {
  display: flex;
  gap: var(--space-sm);
}

.paper-btn {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  display: inline-block;
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  border: 1px solid rgba(0, 102, 255, 0.2);
  transition: var(--transition-fast);
}

.btn-pdf {
  background-color: rgba(0, 102, 255, 0.02);
  color: var(--color-blue);
}

.btn-pdf:hover {
  color: var(--color-cyan);
  border-color: var(--color-cyan);
  background-color: rgba(0, 194, 255, 0.03);
}

.btn-bib {
  background-color: transparent;
  color: var(--color-gray-light);
  border-color: var(--glass-border);
}

.btn-bib:hover {
  color: var(--color-pure-white);
  border-color: var(--color-white);
}


/* --------------------------------------------------------
   8. STAT CARD — Metric display
   -------------------------------------------------------- */

.stat-card {
  border: var(--border-subtle);
  background-color: rgba(7, 11, 22, 0.2);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  transition: var(--transition-smooth);
}

.stat-card:hover {
  border-color: rgba(0, 102, 255, 0.12);
  background-color: rgba(14, 21, 43, 0.3);
  transform: translateY(-1px);
}

.stat-card .stat-num {
  font-family: var(--font-primary);
  font-size: 1.85rem;
  font-weight: 500;
  color: var(--color-pure-white);
  line-height: var(--leading-tight);
  margin-bottom: 6px;
}

.stat-card .stat-label {
  font-size: var(--text-xs);
  color: var(--color-gray-light);
  text-transform: uppercase;
  letter-spacing: var(--tracking-snug);
}


/* --------------------------------------------------------
   9. PARAM ROW — Parameter display
   -------------------------------------------------------- */

.technical-parameters {
  margin-top: 36px;
  border-top: var(--border-dashed);
  padding-top: 20px;
}

.param-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: var(--border-subtle);
  font-size: var(--text-base);
}

.param-row:last-child {
  border-bottom: none;
}

.param-label {
  font-family: var(--font-mono);
  color: var(--color-gray-light);
  letter-spacing: var(--tracking-snug);
}

.param-value {
  font-family: var(--font-mono);
  color: var(--color-cyan);
}


/* --------------------------------------------------------
   10. PULSE DOT — Status indicator
   -------------------------------------------------------- */

.pulse-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-cyan);
  border-radius: var(--radius-full);
  display: inline-block;
  animation: badge-pulse 3s infinite ease-in-out;
}


/* --------------------------------------------------------
   11. TECHNICAL STATUS BADGE
   -------------------------------------------------------- */

.technical-status-badge {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.1em;
  color: var(--color-cyan);
  background-color: rgba(0, 194, 255, 0.03);
  border: var(--border-cyan);
  padding: 6px 14px;
  border-radius: var(--radius-xs);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
}


/* --------------------------------------------------------
   12. INTERACTIVE DIAGRAM WRAPPER
   --------------------------------------------------------
   Container for SVG flow diagrams and technical graphics.
   -------------------------------------------------------- */

.interactive-diagram-wrapper {
  background-color: rgba(14, 21, 43, 0.2);
  border: var(--border-panel);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  overflow: hidden;
  box-shadow: var(--shadow-inset);
}

.flow-diagram {
  max-width: 100%;
  height: auto;
  display: block;
}


/* --------------------------------------------------------
   13. ABOUT SECTION — Symbol & diagram
   -------------------------------------------------------- */

.about-text h2 {
  margin-bottom: var(--space-lg);
}

.about-text p {
  margin-bottom: 20px;
}

.about-symbol-wrapper {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
}

.diagram-coordinate-overlay {
  position: absolute;
  top: -10%;
  left: -10%;
  width: 120%;
  height: 120%;
  pointer-events: none;
  background-image:
    radial-gradient(circle at 50% 50%, rgba(0, 102, 255, 0.02) 0%, transparent 60%);
  z-index: var(--z-base);
}

.research-symbol-diagram {
  max-width: 100%;
  height: auto;
  z-index: 2;
  filter: drop-shadow(0 0 10px rgba(0, 102, 255, 0.03));
}