/* ===========================================
   THEME VARIABLES
   =========================================== */
:root {
  --bg-base: #0c0f11;
  --bg-surface: rgba(0, 0, 0, 0.3);
  --bg-surface-alt: rgba(0, 0, 0, 0.2);
  --bg-surface-strong: rgba(0, 0, 0, 0.4);
  --text-strong: #f5f5f5;
  --text-default: #d1d5db;
  --text-muted: #9ca3af;
  --text-subtle: #6b7280;
  --border-default: #4b5563;
  --border-strong: #374151;
  --accent: #0891b2;
  --accent-strong: #0e7490;
  --accent-soft: rgba(8, 145, 178, 0.15);
  color-scheme: dark;
}

[data-theme="light"] {
  --bg-base: #f8fafc;
  --bg-surface: #ffffff;
  --bg-surface-alt: #f1f5f9;
  --bg-surface-strong: #e2e8f0;
  --text-strong: #0f172a;
  --text-default: #1f2937;
  --text-muted: #334155;
  --text-subtle: #475569;
  --border-default: #d0d7e2;
  --border-strong: #cbd5e1;
  --accent: #0ea5e9;
  --accent-strong: #0284c7;
  --accent-soft: rgba(14, 165, 233, 0.15);
  color-scheme: light;
}

/* ===========================================
   BASE / RESET
   =========================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  background-color: var(--bg-base);
}

body {
  background: transparent;
  color: var(--text-muted);
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
}

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

ul, ol {
  list-style: none;
}

/* Dash removes default margin on its root div */
#app-root {
  min-height: 100vh;
}

/* Screen-reader only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* ===========================================
   LAYOUT
   =========================================== */
.page-wrapper {
  width: 100%;
  margin: 0 auto;
  padding: 0 0.5rem;
}

@media (min-width: 768px) {
  .page-wrapper { padding: 0 1rem; }
}

@media (min-width: 1024px) {
  .page-wrapper { width: 80%; padding: 0; }
}

@media (min-width: 1280px) {
  .page-wrapper { max-width: 55rem; }
}

/* ===========================================
   NOISE OVERLAY
   =========================================== */
.noise-overlay {
  pointer-events: none;
  z-index: 9999;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: repeat center center url('/assets/noise.svg');
  background-size: 32%;
  opacity: 0.05;
  mix-blend-mode: luminosity;
}

/* ===========================================
   NAVIGATION
   =========================================== */
#main-header {
  margin-bottom: 2rem;
  padding: 1.5rem 1.5rem 0;
}

.nav-inner {
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  gap: 0.5rem;
}

@media (min-width: 1024px) {
  .nav-inner {
    flex-direction: row;
    align-items: center;
  }
}

.nav-brand {
  color: var(--text-strong) !important;
  font-weight: 500;
  font-size: 1rem;
}

.nav-brand:hover {
  color: var(--text-strong) !important;
}

.nav-right {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1.5rem;
  font-size: 0.875rem;
}

.nav-link {
  color: var(--text-muted) !important;
  opacity: 0.7;
  transition: opacity 0.2s;
}

.nav-link:hover {
  opacity: 1;
}

.nav-active {
  color: var(--text-strong) !important;
  opacity: 1 !important;
}

.nav-dim {
  opacity: 0.7;
}

.theme-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  border-radius: 0.375rem;
  border: 1px solid var(--border-default);
  color: var(--text-default);
  background-color: var(--bg-surface-alt);
  cursor: pointer;
  transition: border-color 0.2s, color 0.2s;
  font-family: inherit;
}

.theme-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===========================================
   MAIN CONTENT
   =========================================== */
#main-content {
  padding-bottom: 3rem;
}

/* ===========================================
   TERMINAL CARD
   =========================================== */
.terminal-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 0.5rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  padding: 1.5rem;
}

.terminal-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-default);
}

.traffic-lights {
  display: flex;
  gap: 0.5rem;
}

.dot {
  width: 0.75rem;
  height: 0.75rem;
  border-radius: 50%;
  flex-shrink: 0;
}

.dot-red    { background-color: #ef4444; }
.dot-yellow { background-color: #eab308; }
.dot-green  { background-color: #22c55e; }

.terminal-title {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-left: 0.5rem;
}

.terminal-content {
  font-size: 0.75rem;
}

.terminal-footer {
  margin-top: 0.75rem;
  padding-top: 0.5rem;
  border-top: 1px solid var(--border-strong);
  color: var(--text-subtle);
  font-size: 0.75rem;
}

.dollar { color: var(--text-muted); }

/* ===========================================
   ABOUT SECTION
   =========================================== */
.about-section {
  margin-top: 1.5rem;
}

.about-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.about-emoji { font-size: 1.875rem; }

.about-name {
  font-size: 1.25rem;
  color: var(--text-strong);
  font-weight: normal;
}

.about-title {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.about-bio {
  background-color: var(--bg-surface-alt);
  border-radius: 0.5rem;
  padding: 0.75rem;
  margin-bottom: 1rem;
}

.about-bio p {
  color: var(--text-strong);
  line-height: 1.625;
}

.divider {
  border: none;
  border-top: 1px solid var(--border-default);
  margin: 0.5rem 0;
}

.info-row {
  display: flex;
  align-items: flex-start;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
}

.tech-row { align-items: center; }

.info-label {
  color: var(--text-muted);
  width: 9rem;
  flex-shrink: 0;
}

.info-value { color: var(--text-strong); }

.accent-link {
  color: var(--accent) !important;
}

.accent-link:hover {
  text-decoration: underline;
  color: var(--accent-strong) !important;
}

.social-list {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0 0.25rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem;
  color: var(--text-strong);
  transition: color 0.2s;
}

.social-link:hover { color: var(--accent); }

.social-link svg,
.social-link div svg {
  width: 1.5rem;
  height: 1.5rem;
}

.tech-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tag {
  color: var(--text-muted);
  font-size: 0.75rem;
  transition: color 0.2s;
  cursor: default;
}

.tech-tag:hover { color: var(--accent); }

/* ===========================================
   PROJECTS SECTION
   =========================================== */
.projects-section { margin-top: 0.5rem; }

.section-card {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-strong);
  border-radius: 0.25rem;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
  font-size: 0.875rem;
  color: var(--text-default);
  padding: 1.5rem;
}

.section-label {
  margin-bottom: 1rem;
  font-size: 0.875rem;
  font-weight: bold;
  color: var(--text-subtle);
}

/* Featured project */
.featured-project { margin-bottom: 2rem; }

.featured-header { margin-bottom: 0.75rem; }

.featured-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-strong);
  margin-bottom: 0.5rem;
}

.featured-subtitle {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.project-thumbnail {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border-radius: 0.5rem;
  border: 1px solid var(--border-default);
  background-color: var(--bg-surface-alt);
  margin-bottom: 1rem;
  transition: border-color 0.2s;
}

.project-thumbnail:hover { border-color: var(--accent); }

/* Projects grid */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

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

.project-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-default);
  border-radius: 0.5rem;
  padding: 1rem;
  transition: border-color 0.2s;
}

.project-card:hover { border-color: var(--accent); }

.project-card-header { margin-bottom: 0.75rem; }

.project-card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-strong);
}

.project-card-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  border-radius: 0.25rem;
  border: 1px solid var(--border-default);
  background-color: var(--bg-surface-alt);
  margin-bottom: 0.75rem;
  transition: border-color 0.2s;
}

.project-card-thumb:hover { border-color: var(--accent); }

/* SVG project icons */
.project-icon {
  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-icon svg {
  width: 3rem;
  height: 3rem;
  stroke: currentColor;
}

.project-icon-lg svg {
  width: 4rem;
  height: 4rem;
}

.project-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 0.75rem;
  line-height: 1.5;
}

/* ===========================================
   BUTTONS
   =========================================== */
.btn-list {
  display: flex;
  gap: 0.5rem;
}

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.btn-primary {
  display: inline-block;
  padding: 0.5rem 1rem;
  background-color: var(--accent);
  color: #fff !important;
  border-radius: 0.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  transition: background-color 0.2s;
  border: none;
  cursor: pointer;
  font-family: inherit;
}

.btn-primary:hover {
  background-color: var(--accent-strong);
  color: #fff !important;
}

.btn-primary-sm {
  font-size: 0.75rem;
  padding: 0.375rem 0.75rem;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  background-color: var(--bg-surface-strong);
  color: var(--accent) !important;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0.25rem;
  border: 1px solid var(--accent-soft);
  text-decoration: none;
  transition: background-color 0.2s;
  cursor: pointer;
  font-family: inherit;
}

.btn-secondary:hover {
  background-color: var(--bg-surface-strong);
}

/* ===========================================
   CV PREVIEW SECTION
   =========================================== */
.cv-section { margin-top: 2rem; }

.cv-section-label {
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  font-weight: 600;
  color: var(--text-subtle);
}

/* ===========================================
   CV PAGE
   =========================================== */
.cv-page { margin-top: 1.5rem; }

.cv-contact-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem 1rem;
  font-size: 0.75rem;
  font-family: ui-monospace, Menlo, monospace;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.cv-section-block { margin-bottom: 2rem; }

.cv-section-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-strong);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 1px solid var(--border-default);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
  font-family: ui-monospace, Menlo, monospace;
}

.cv-entry { margin-bottom: 1.5rem; }

.cv-entry-header {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 0.25rem;
  gap: 0.5rem;
}

.cv-entry-title {
  font-weight: 600;
  color: var(--text-strong);
  font-size: 0.875rem;
}

.cv-entry-subtitle {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.cv-entry-date {
  color: var(--text-subtle);
  font-size: 0.75rem;
  font-family: ui-monospace, Menlo, monospace;
  white-space: nowrap;
}

.cv-entry-location {
  color: var(--text-subtle);
  font-size: 0.75rem;
  margin-bottom: 0.75rem;
}

.cv-bullet-list { padding-left: 1.25rem; }

.cv-bullet-list li {
  color: var(--text-default);
  font-size: 0.875rem;
  margin-bottom: 0.375rem;
  position: relative;
  list-style: none;
}

.cv-bullet-list li::before {
  content: "—";
  position: absolute;
  left: -1.25rem;
  color: var(--accent);
}

.cv-project-tech {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.375rem;
  font-size: 0.75rem;
}

.cv-project-tech-label { color: var(--text-subtle); }

.cv-project-tech-value {
  color: var(--accent);
  font-family: ui-monospace, Menlo, monospace;
}

.cv-project-year {
  color: var(--text-subtle);
  font-size: 0.75rem;
  font-family: ui-monospace, Menlo, monospace;
}

.cv-project-desc {
  color: var(--text-default);
  font-size: 0.875rem;
  line-height: 1.6;
}

.summary-text {
  color: var(--text-default);
  font-size: 0.875rem;
  line-height: 1.625;
  margin-bottom: 1.5rem;
}

/* Skills grid */
.skills-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

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

.skill-category {
  background-color: var(--bg-surface-alt);
  border: 1px solid var(--border-strong);
  border-radius: 0.5rem;
  padding: 1rem;
}

.skill-category-name {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.5rem;
  font-family: ui-monospace, Menlo, monospace;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.skill-tag {
  font-size: 0.75rem;
  color: var(--text-default);
  background-color: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 0.25rem;
  padding: 0.125rem 0.5rem;
}

/* Certifications */
.cert-list { border-top: 1px solid var(--border-strong); }

.cert-entry {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-strong);
  gap: 1rem;
}

.cert-name {
  color: var(--text-strong);
  font-size: 0.875rem;
}

.cert-issuer {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-top: 0.125rem;
}

.cert-date {
  color: var(--text-subtle);
  font-size: 0.75rem;
  font-family: ui-monospace, Menlo, monospace;
  white-space: nowrap;
}

.cv-download-area {
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-default);
}

/* ===========================================
   404 PAGE
   =========================================== */
.error-page {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
}

.error-card {
  width: 100%;
  max-width: 42rem;
}

.error-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.error-code {
  color: #f87171;
  font-size: 1.5rem;
  font-weight: bold;
}

.error-message-box {
  background-color: rgba(239, 68, 68, 0.1);
  border: 1px solid rgba(239, 68, 68, 0.3);
  border-radius: 0.5rem;
  padding: 1rem;
  margin-bottom: 1rem;
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.error-label {
  color: #f87171;
  font-weight: bold;
  white-space: nowrap;
}

.error-text {
  color: var(--text-default);
  line-height: 1.625;
  font-size: 0.875rem;
}

.error-details {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.error-detail-row {
  display: flex;
  font-size: 0.75rem;
}

.error-detail-key {
  color: var(--text-muted);
  width: 6rem;
  flex-shrink: 0;
}

.error-detail-val { color: var(--text-strong); word-break: break-all; }
.error-detail-val.red { color: #f87171; font-weight: bold; }

.suggestions {
  margin-top: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.suggestion-label {
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
}

.suggestion-item {
  color: var(--text-default);
  font-size: 0.75rem;
  padding-left: 1rem;
}

.suggestion-num { color: var(--text-subtle); }

/* ===========================================
   HAPPY PAGE
   =========================================== */
.happy-page {
  margin-top: 1.5rem;
  display: flex;
  justify-content: center;
}

.happy-video {
  width: 100%;
  max-width: 560px;
  aspect-ratio: 16 / 9;
  border-radius: 0.5rem;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  border: none;
}