/* 
  k89_26 - Riku Eskelinen (kingi89) Personal Card Page
  Design System & Stylesheet (No external dependencies)
  Colors: Neutral dark/light background, Blue (primary), Cyan (secondary), Purple (tertiary)
*/

/* --- Local Font Declarations --- */
@font-face {
  font-family: 'Inter';
  font-style: normal;
  font-weight: 100 900;
  font-display: swap;
  src: url('../fonts/InterVariable.woff2') format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-Regular.woff2') format('woff2');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url('../fonts/JetBrainsMono-Bold.woff2') format('woff2');
}

/* --- CSS Variables & Design Tokens --- */
:root {
  /* Color Palette - Blue (Primary), Cyan (Secondary), Purple (Tertiary) */
  --color-blue-primary: #3b82f6;
  --color-blue-primary-hover: #2563eb;
  --color-cyan-secondary: #06b6d4;
  --color-cyan-secondary-hover: #0891b2;
  --color-purple-tertiary: #a855f7;
  --color-purple-tertiary-hover: #9333ea;

  /* Gradients */
  --gradient-accent: linear-gradient(135deg, var(--color-blue-primary), var(--color-cyan-secondary), var(--color-purple-tertiary));
  --gradient-glow: linear-gradient(135deg, rgba(59, 130, 246, 0.12), rgba(6, 182, 212, 0.12), rgba(168, 85, 247, 0.12));
  --gradient-border: linear-gradient(135deg, rgba(59, 130, 246, 0.4), rgba(6, 182, 212, 0.4), rgba(168, 85, 247, 0.4));

  /* Dark Theme Default (Blackish neutral) */
  --bg-main: #0b0f19;
  --bg-surface: #111827;
  --bg-card: rgba(17, 24, 39, 0.75);
  --bg-card-hover: rgba(24, 32, 47, 0.85);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-color-glow: rgba(59, 130, 246, 0.35);

  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-heading: #ffffff;

  --badge-bg: rgba(59, 130, 246, 0.12);
  --badge-border: rgba(59, 130, 246, 0.3);
  --badge-text: #60a5fa;

  /* Typography - Prefer local Inter/JetBrains Mono with system fallbacks */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Layout & Spacing */
  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 15px rgba(6, 182, 212, 0.15);

  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Light Theme Variables (Whitish neutral) */
[data-theme="light"] {
  --bg-main: #f8fafc;
  --bg-surface: #ffffff;
  --bg-card: rgba(255, 255, 255, 0.85);
  --bg-card-hover: rgba(241, 245, 249, 0.95);
  --border-color: rgba(0, 0, 0, 0.08);
  --border-color-glow: rgba(37, 99, 235, 0.3);

  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-heading: #0f172a;

  --badge-bg: rgba(37, 99, 235, 0.08);
  --badge-border: rgba(37, 99, 235, 0.25);
  --badge-text: #2563eb;

  --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 15px rgba(59, 130, 246, 0.1);
}

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

html {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  background-color: var(--bg-main);
  color: var(--text-main);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-image: 
    radial-gradient(circle at 15% 15%, rgba(59, 130, 246, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 85% 65%, rgba(168, 85, 247, 0.08) 0%, transparent 45%),
    radial-gradient(circle at 50% 90%, rgba(6, 182, 212, 0.08) 0%, transparent 50%);
  background-attachment: fixed;
}

a {
  color: var(--color-blue-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover, a:focus-visible {
  color: var(--color-cyan-secondary);
  text-decoration: underline;
}

/* --- Accessibility & Focus Styles --- */
:focus-visible {
  outline: 2px solid var(--color-cyan-secondary);
  outline-offset: 3px;
  border-radius: 4px;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: 1rem;
  background: var(--color-blue-primary);
  color: #ffffff;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-sm);
  z-index: 9999;
  font-weight: 600;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 1rem;
}

/* --- Container & Layout --- */
.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* --- Header / Navigation Bar --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background-color: rgba(11, 15, 25, 0.75);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 0;
  transition: background-color var(--transition-normal);
}

[data-theme="light"] .site-header {
  background-color: rgba(248, 250, 252, 0.85);
}

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

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--text-heading);
  letter-spacing: -0.02em;
}

.brand-logo .accent-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--gradient-accent);
  box-shadow: 0 0 10px var(--color-cyan-secondary);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Language Switcher Buttons */
.lang-switcher {
  display: flex;
  align-items: center;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  padding: 3px;
  gap: 2px;
}

.lang-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.825rem;
  font-weight: 600;
  padding: 0.35rem 0.7rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  color: var(--text-main);
}

.lang-btn.active {
  background: var(--gradient-accent);
  color: #ffffff;
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
}

/* Theme Toggle Button */
.theme-toggle-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  border-color: var(--color-cyan-secondary);
  color: var(--color-cyan-secondary);
}

.theme-toggle-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* --- Hero & Profile Section --- */
.hero-section {
  padding: 3.5rem 0 2rem;
}

.profile-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.profile-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
}

.profile-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.pill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  background: var(--badge-bg);
  border: 1px solid var(--badge-border);
  color: var(--badge-text);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-full);
  font-family: var(--font-mono);
}

.pill-cyan {
  background: rgba(6, 182, 212, 0.12);
  border-color: rgba(6, 182, 212, 0.3);
  color: var(--color-cyan-secondary);
}

.pill-purple {
  background: rgba(168, 85, 247, 0.12);
  border-color: rgba(168, 85, 247, 0.3);
  color: var(--color-purple-tertiary);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10b981;
  box-shadow: 0 0 8px #10b981;
  animation: pulse-dot 2s infinite;
}

@keyframes pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.85); }
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  color: var(--text-heading);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

.hero-title .gradient-text {
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-cyan-secondary);
  font-weight: 600;
  font-family: var(--font-mono);
}

.hero-bio {
  font-size: 1.1rem;
  color: var(--text-main);
  max-width: 800px;
  line-height: 1.7;
}

/* --- Bento Grid System --- */
.bento-section {
  padding: 1.5rem 0 3rem;
}

.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1.25rem;
}

.bento-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-normal), background-color var(--transition-normal), box-shadow var(--transition-normal);
  display: flex;
  flex-direction: column;
}

/* Subtle Hover Effect (NO TRANSFORM) */
.bento-card:hover {
  border-color: var(--border-color-glow);
  background-color: var(--bg-card-hover);
  box-shadow: var(--shadow-card), var(--shadow-glow);
}

/* Card Column Sizes */
.col-12 { grid-column: span 12; }
.col-8  { grid-column: span 8; }
.col-6  { grid-column: span 6; }
.col-4  { grid-column: span 4; }

@media (max-width: 900px) {
  .col-8, .col-6, .col-4 {
    grid-column: span 12;
  }
}

.card-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius-sm);
  background: var(--gradient-glow);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-cyan-secondary);
  margin-bottom: 1rem;
}

.card-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 0.75rem;
}

.card-text {
  color: var(--text-muted);
  font-size: 0.975rem;
  line-height: 1.65;
}

/* Value List */
.value-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-top: 1rem;
}

.value-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: rgba(255, 255, 255, 0.03);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-blue-primary);
}

.value-item:nth-child(2) {
  border-left-color: var(--color-cyan-secondary);
}

.value-item:nth-child(3) {
  border-left-color: var(--color-purple-tertiary);
}

.value-item-title {
  font-weight: 600;
  color: var(--text-heading);
  font-size: 0.95rem;
}

.value-item-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* --- Projects Section (Major & Minor Projects) --- */
.projects-container {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
  width: 100%;
  margin-top: 0.75rem;
}

.projects-group-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-cyan-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
}

.projects-group-title::before {
  content: '>';
  color: var(--color-purple-tertiary);
}

/* Major Projects Grid */
.major-projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
}

.major-project-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 1.5rem;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.major-project-card:hover {
  border-color: var(--color-blue-primary);
  background-color: rgba(59, 130, 246, 0.04);
}

.project-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.project-name {
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text-heading);
}

.project-link-icon {
  color: var(--color-cyan-secondary);
  font-weight: bold;
}

.project-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  line-height: 1.6;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tech-tag {
  font-size: 0.725rem;
  font-family: var(--font-mono);
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
}

/* Minor Projects Compact Grid */
.minor-projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.85rem;
}

.minor-project-card {
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.minor-project-card:hover {
  border-color: var(--color-purple-tertiary);
  background: rgba(168, 85, 247, 0.05);
}

.minor-project-info {
  display: flex;
  flex-direction: column;
}

.minor-project-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-heading);
}

.minor-project-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* Contact List */
.contact-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 1rem;
}

.contact-link-card {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  transition: border-color var(--transition-fast), background-color var(--transition-fast);
}

.contact-link-card:hover {
  border-color: var(--color-cyan-secondary);
  background: rgba(6, 182, 212, 0.05);
  text-decoration: none;
}

.contact-card-wide {
  grid-column: span 2;
}

@media (max-width: 600px) {
  .contact-card-wide {
    grid-column: span 1;
  }
}

.contact-icon {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--badge-bg);
  color: var(--color-blue-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-info-text {
  display: flex;
  flex-direction: column;
}

.contact-label {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
}

.contact-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-heading);
  word-break: break-all;
}

/* --- Summary Blocks (No-JS / Dynamic i18n) --- */
.summary-blocks {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.summary-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  backdrop-filter: blur(10px);
}

.summary-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.75rem;
  font-weight: 700;
  color: var(--color-cyan-secondary);
}

/* When JS is enabled, hide the no-js summary container unless explicit */
body.js-enabled .no-js-summaries {
  display: none;
}

/* --- Footer & Legal Section --- */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--border-color);
  background: var(--bg-surface);
  padding: 2.5rem 0 2rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: 2rem;
  margin-bottom: 2rem;
}

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

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-ai-note {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gradient-glow);
  border: 1px solid var(--border-color-glow);
  padding: 0.6rem 1rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  color: var(--text-main);
  max-width: fit-content;
}

.footer-ai-note svg {
  color: var(--color-purple-tertiary);
  flex-shrink: 0;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-links-title {
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 0.5rem;
  font-size: 0.95rem;
}

.footer-links a {
  color: var(--text-muted);
}

.footer-links a:hover {
  color: var(--color-blue-primary);
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.8rem;
}

/* --- Error Pages (404, 403, 410) --- */
.error-page-body {
  justify-content: center;
  align-items: center;
  padding: 2rem 1rem;
}

.error-container {
  width: 100%;
  max-width: 650px;
  text-align: center;
}

.error-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 3rem 2rem;
  backdrop-filter: blur(16px);
  box-shadow: var(--shadow-card);
  position: relative;
  overflow: hidden;
}

.error-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-accent);
}

.error-code {
  font-size: clamp(4rem, 12vw, 7rem);
  font-weight: 900;
  line-height: 1;
  font-family: var(--font-mono);
  background: var(--gradient-accent);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  margin-bottom: 1rem;
}

.error-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-heading);
  margin-bottom: 1rem;
}

.error-messages-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.error-msg-fi {
  font-size: 1.05rem;
  color: var(--text-main);
  font-weight: 600;
}

.error-msg-en {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.error-msg-ja {
  font-size: 0.9rem;
  color: var(--color-cyan-secondary);
}

.btn-home {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--gradient-accent);
  color: #ffffff;
  font-weight: 600;
  padding: 0.85rem 1.75rem;
  border-radius: var(--radius-full);
  box-shadow: 0 4px 15px rgba(59, 130, 246, 0.35);
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.btn-home:hover {
  box-shadow: 0 6px 20px rgba(6, 182, 212, 0.45);
  color: #ffffff;
  text-decoration: none;
}

/* --- Blockquote Styling --- */
blockquote {
  margin-top: 1rem;
  padding: 1rem 1.25rem;
  background: rgba(255, 255, 255, 0.03);
  border-left: 3px solid var(--color-cyan-secondary);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-style: italic;
  font-size: 0.925rem;
  line-height: 1.65;
  color: var(--text-main);
}

/* --- Story Collapsible Details & Summary --- */
.story-details {
  margin-top: 1.25rem;
}

.story-summary {
  cursor: pointer;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-cyan-secondary);
  background: rgba(6, 182, 212, 0.08);
  border: 1px solid rgba(6, 182, 212, 0.25);
  padding: 0.55rem 1rem;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  user-select: none;
  transition: all var(--transition-fast);
  width: fit-content;
}

.story-summary:hover {
  background: rgba(6, 182, 212, 0.16);
  border-color: var(--color-cyan-secondary);
  color: var(--text-heading);
}

.story-details[open] .story-summary {
  margin-bottom: 0.75rem;
}

/* --- No-JS Specific Rule: Hide JS-only interactive elements --- */
body:not(.js-enabled) .theme-toggle-btn {
  display: none !important;
}

/* --- Japanese Ruby (Furigana) Styling --- */
ruby {
  ruby-align: center;
}

rt {
  font-size: 0.45em;
  font-weight: 600;
  letter-spacing: 0.05em;
  color: var(--color-cyan-secondary);
  -webkit-text-fill-color: var(--color-cyan-secondary);
}