/* ==========================================================================
   Termodoro - Project Website Stylesheet
   Modern, responsive, vanilla CSS with 18-theme dynamic custom properties
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:ital,wght@0,400;0,500;0,700;1,400&display=swap');

:root {
  /* Default Catppuccin Mocha theme tokens */
  --bg-base: #1e1e2e;
  --bg-surface: #181825;
  --bg-card: #252538;
  --bg-card-hover: #2d2d44;
  --text-main: #cdd6f4;
  --text-muted: #9399b2;
  --text-dim: #6c7086;
  
  --color-primary: #89b4fa;
  --color-secondary: #cba6f7;
  --color-work: #f38ba8;
  --color-short-break: #a6e3a1;
  --color-long-break: #94e2d5;
  --color-success: #a6e3a1;
  --color-warning: #f9e2af;
  
  --border-color: #313244;
  --border-active: #89b4fa;
  --highlight-bg: #313244;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.25);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.35);

  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, monospace;

  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
}

/* ==========================================================================
   Universal Theme-Aware Custom Scrollbars (All Browsers & OSes)
   ========================================================================== */

* {
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) var(--bg-surface);
}

::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--bg-surface);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 4px;
  border: 2px solid var(--bg-surface);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

::-webkit-scrollbar-corner {
  background: var(--bg-surface);
}

/* ==========================================================================
   18 Built-in Themes (CSS Custom Properties mapping directly to [data-theme])
   ========================================================================== */

html[data-theme="catppuccin_mocha"], [data-theme="catppuccin_mocha"] {
  --bg-base: #1e1e2e;
  --bg-surface: #181825;
  --bg-card: #252538;
  --bg-card-hover: #2d2d44;
  --text-main: #cdd6f4;
  --text-muted: #9399b2;
  --text-dim: #6c7086;
  --color-primary: #89b4fa;
  --color-secondary: #cba6f7;
  --color-work: #f38ba8;
  --color-short-break: #a6e3a1;
  --color-long-break: #94e2d5;
  --color-success: #a6e3a1;
  --color-warning: #f9e2af;
  --border-color: #313244;
  --border-active: #89b4fa;
  --highlight-bg: #313244;
  --color-on-primary: #11111b;
}

html[data-theme="catppuccin_macchiato"], [data-theme="catppuccin_macchiato"] {
  --bg-base: #24273a;
  --bg-surface: #1e2030;
  --bg-card: #2d314d;
  --bg-card-hover: #363a5c;
  --text-main: #cad3f5;
  --text-muted: #939ab7;
  --text-dim: #6e738d;
  --color-primary: #8aadf4;
  --color-secondary: #c6a0f6;
  --color-work: #ed8796;
  --color-short-break: #a6da95;
  --color-long-break: #8bd5ca;
  --color-success: #a6da95;
  --color-warning: #eed49f;
  --border-color: #3c405b;
  --border-active: #8aadf4;
  --highlight-bg: #363a4f;
  --color-on-primary: #11111b;
}

html[data-theme="catppuccin_frappe"], [data-theme="catppuccin_frappe"] {
  --bg-base: #303446;
  --bg-surface: #292c3c;
  --bg-card: #393e56;
  --bg-card-hover: #424864;
  --text-main: #c6d0f5;
  --text-muted: #949cbb;
  --text-dim: #737994;
  --color-primary: #8caaee;
  --color-secondary: #ca9ee6;
  --color-work: #e78284;
  --color-short-break: #a3d18c;
  --color-long-break: #81c8be;
  --color-success: #a3d18c;
  --color-warning: #e5c890;
  --border-color: #474d6b;
  --border-active: #8caaee;
  --highlight-bg: #414559;
  --color-on-primary: #11111b;
}

html[data-theme="catppuccin_latte"], [data-theme="catppuccin_latte"] {
  --bg-base: #eff1f5;
  --bg-surface: #e6e9ef;
  --bg-card: #dce0e8;
  --bg-card-hover: #ccd0da;
  --text-main: #4c4f69;
  --text-muted: #6c6f85;
  --text-dim: #8c8fa1;
  --color-primary: #1e66f5;
  --color-secondary: #8839ef;
  --color-work: #d20f39;
  --color-short-break: #40a02b;
  --color-long-break: #179299;
  --color-success: #40a02b;
  --color-warning: #df8e1d;
  --border-color: #bcc0cc;
  --border-active: #1e66f5;
  --highlight-bg: #ccd0da;
  --color-on-primary: #ffffff;
}

html[data-theme="nord"], [data-theme="nord"] {
  --bg-base: #2e3440;
  --bg-surface: #242933;
  --bg-card: #3b4252;
  --bg-card-hover: #434c5e;
  --text-main: #eceff4;
  --text-muted: #d8dee9;
  --text-dim: #5e81ac;
  --color-primary: #88c0d0;
  --color-secondary: #81a1c1;
  --color-work: #bf616a;
  --color-short-break: #a3be8c;
  --color-long-break: #8fbcbb;
  --color-success: #a3be8c;
  --color-warning: #ebcb8b;
  --border-color: #4c566a;
  --border-active: #88c0d0;
  --highlight-bg: #3b4252;
  --color-on-primary: #11111b;
}

html[data-theme="gruvbox_dark"], [data-theme="gruvbox_dark"] {
  --bg-base: #282828;
  --bg-surface: #1d2021;
  --bg-card: #32302f;
  --bg-card-hover: #3c3836;
  --text-main: #ebdbb2;
  --text-muted: #d5c4a1;
  --text-dim: #928374;
  --color-primary: #fabd2f;
  --color-secondary: #fe8019;
  --color-work: #fb4934;
  --color-short-break: #b8bb26;
  --color-long-break: #8ec07c;
  --color-success: #b8bb26;
  --color-warning: #fabd2f;
  --border-color: #504945;
  --border-active: #fabd2f;
  --highlight-bg: #3c3836;
  --color-on-primary: #11111b;
}

html[data-theme="tokyo_night"], [data-theme="tokyo_night"] {
  --bg-base: #1a1b26;
  --bg-surface: #16161e;
  --bg-card: #24283b;
  --bg-card-hover: #2f354f;
  --text-main: #c0caf5;
  --text-muted: #9aa5ce;
  --text-dim: #565f89;
  --color-primary: #7aa2f7;
  --color-secondary: #bb9af7;
  --color-work: #f7768e;
  --color-short-break: #9ece6a;
  --color-long-break: #73daca;
  --color-success: #9ece6a;
  --color-warning: #e0af68;
  --border-color: #414868;
  --border-active: #7aa2f7;
  --highlight-bg: #24283b;
  --color-on-primary: #11111b;
}

html[data-theme="dracula"], [data-theme="dracula"] {
  --bg-base: #282a36;
  --bg-surface: #21222c;
  --bg-card: #343746;
  --bg-card-hover: #44475a;
  --text-main: #f8f8f2;
  --text-muted: #bfbfbf;
  --text-dim: #6272a4;
  --color-primary: #bd93f9;
  --color-secondary: #8be9fd;
  --color-work: #ff5555;
  --color-short-break: #50fa7b;
  --color-long-break: #8be9fd;
  --color-success: #50fa7b;
  --color-warning: #f1fa8c;
  --border-color: #44475a;
  --border-active: #bd93f9;
  --highlight-bg: #44475a;
  --color-on-primary: #11111b;
}

html[data-theme="rose_pine"], [data-theme="rose_pine"] {
  --bg-base: #191724;
  --bg-surface: #1f1d2e;
  --bg-card: #26233a;
  --bg-card-hover: #312f49;
  --text-main: #e0def4;
  --text-muted: #908caa;
  --text-dim: #6e6a86;
  --color-primary: #9ccfd8;
  --color-secondary: #c4a7e7;
  --color-work: #eb6f92;
  --color-short-break: #31748f;
  --color-long-break: #9ccfd8;
  --color-success: #31748f;
  --color-warning: #f6c177;
  --border-color: #393552;
  --border-active: #c4a7e7;
  --highlight-bg: #2a283e;
  --color-on-primary: #11111b;
}

html[data-theme="one_dark"], [data-theme="one_dark"] {
  --bg-base: #282c34;
  --bg-surface: #21252b;
  --bg-card: #2c313a;
  --bg-card-hover: #353b45;
  --text-main: #abb2bf;
  --text-muted: #828997;
  --text-dim: #5c6370;
  --color-primary: #61afef;
  --color-secondary: #c678dd;
  --color-work: #e06c75;
  --color-short-break: #98c379;
  --color-long-break: #56b6c2;
  --color-success: #98c379;
  --color-warning: #e5c07b;
  --border-color: #3e4452;
  --border-active: #61afef;
  --highlight-bg: #353b45;
  --color-on-primary: #11111b;
}

html[data-theme="kanagawa"], [data-theme="kanagawa"] {
  --bg-base: #1f1f28;
  --bg-surface: #16161d;
  --bg-card: #2a2a37;
  --bg-card-hover: #363646;
  --text-main: #dcd7ba;
  --text-muted: #938aa9;
  --text-dim: #727169;
  --color-primary: #7e9cd8;
  --color-secondary: #957fb8;
  --color-work: #e46876;
  --color-short-break: #76946a;
  --color-long-break: #6a9589;
  --color-success: #76946a;
  --color-warning: #ffa066;
  --border-color: #363646;
  --border-active: #7e9cd8;
  --highlight-bg: #2a2a37;
  --color-on-primary: #11111b;
}

html[data-theme="everforest_dark"], [data-theme="everforest_dark"] {
  --bg-base: #2d353b;
  --bg-surface: #232a2e;
  --bg-card: #343f44;
  --bg-card-hover: #3d484d;
  --text-main: #d3c6aa;
  --text-muted: #9da9a0;
  --text-dim: #859289;
  --color-primary: #7fbbb3;
  --color-secondary: #d699b6;
  --color-work: #e67e80;
  --color-short-break: #a7c080;
  --color-long-break: #83c092;
  --color-success: #a7c080;
  --color-warning: #dbbc7f;
  --border-color: #475258;
  --border-active: #a7c080;
  --highlight-bg: #343f44;
  --color-on-primary: #11111b;
}

html[data-theme="everforest_light"], [data-theme="everforest_light"] {
  --bg-base: #fdf6e3;
  --bg-surface: #f4ede8;
  --bg-card: #eae4cb;
  --bg-card-hover: #dfd8bd;
  --text-main: #5c6a72;
  --text-muted: #708089;
  --text-dim: #93aa9f;
  --color-primary: #3a9486;
  --color-secondary: #df69ba;
  --color-work: #f85552;
  --color-short-break: #8da101;
  --color-long-break: #35a77c;
  --color-success: #8da101;
  --color-warning: #dfa000;
  --border-color: #d3cbb7;
  --border-active: #3a9486;
  --highlight-bg: #eae4cb;
  --color-on-primary: #11111b;
}

html[data-theme="solarized_dark"], [data-theme="solarized_dark"] {
  --bg-base: #002b36;
  --bg-surface: #073642;
  --bg-card: #094352;
  --bg-card-hover: #0b4f61;
  --text-main: #839496;
  --text-muted: #93a1a1;
  --text-dim: #586e75;
  --color-primary: #268bd2;
  --color-secondary: #2aa198;
  --color-work: #dc322f;
  --color-short-break: #859900;
  --color-long-break: #2aa198;
  --color-success: #859900;
  --color-warning: #b58900;
  --border-color: #0d5568;
  --border-active: #268bd2;
  --highlight-bg: #073642;
  --color-on-primary: #11111b;
}

html[data-theme="solarized_light"], [data-theme="solarized_light"] {
  --bg-base: #fdf6e3;
  --bg-surface: #eee8d5;
  --bg-card: #e4dcbe;
  --bg-card-hover: #dad1b0;
  --text-main: #657b83;
  --text-muted: #586e75;
  --text-dim: #93a1a1;
  --color-primary: #268bd2;
  --color-secondary: #6c71c4;
  --color-work: #dc322f;
  --color-short-break: #859900;
  --color-long-break: #2aa198;
  --color-success: #859900;
  --color-warning: #b58900;
  --border-color: #d3cbb7;
  --border-active: #268bd2;
  --highlight-bg: #eee8d5;
  --color-on-primary: #11111b;
}

html[data-theme="synthwave84"], [data-theme="synthwave84"] {
  --bg-base: #262335;
  --bg-surface: #1e1c2a;
  --bg-card: #34294f;
  --bg-card-hover: #423565;
  --text-main: #f0eff1;
  --text-muted: #b6b1d8;
  --text-dim: #848bbd;
  --color-primary: #36f9f6;
  --color-secondary: #ff7edb;
  --color-work: #fe4450;
  --color-short-break: #72f1b8;
  --color-long-break: #36f9f6;
  --color-success: #72f1b8;
  --color-warning: #fede5d;
  --border-color: #494363;
  --border-active: #ff7edb;
  --highlight-bg: #34294f;
  --color-on-primary: #11111b;
}

html[data-theme="monokai_pro"], [data-theme="monokai_pro"] {
  --bg-base: #2d2a2e;
  --bg-surface: #221f22;
  --bg-card: #3a383b;
  --bg-card-hover: #49464b;
  --text-main: #fcfcfa;
  --text-muted: #c1c0c0;
  --text-dim: #727072;
  --color-primary: #78dce8;
  --color-secondary: #ab9df2;
  --color-work: #ff6188;
  --color-short-break: #a9dc76;
  --color-long-break: #78dce8;
  --color-success: #a9dc76;
  --color-warning: #ffd866;
  --border-color: #49474a;
  --border-active: #ffd866;
  --highlight-bg: #3a383b;
  --color-on-primary: #11111b;
}

html[data-theme="oled_phosphor"], [data-theme="oled_phosphor"] {
  --bg-base: #000000;
  --bg-surface: #050505;
  --bg-card: #0d1a0d;
  --bg-card-hover: #132613;
  --text-main: #33ff66;
  --text-muted: #26cc52;
  --text-dim: #1a662a;
  --color-primary: #00ff66;
  --color-secondary: #00cc55;
  --color-work: #ff3333;
  --color-short-break: #33ff66;
  --color-long-break: #00ffff;
  --color-success: #33ff66;
  --color-warning: #ffff33;
  --border-color: #1a331a;
  --border-active: #00ff66;
  --highlight-bg: #0a1f0a;
  --color-on-primary: #11111b;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-base);
  color: var(--text-main);
  font-family: var(--font-sans);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  max-width: 100vw;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--bg-base);
  color: var(--text-main);
  transition: background-color var(--transition-normal), color var(--transition-normal);
  overflow-x: hidden;
  max-width: 100vw;
  position: relative;
}

body.mobile-menu-open {
  overflow: hidden;
}

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

a:hover {
  text-decoration: underline;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Layout container */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
  box-sizing: border-box;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--bg-surface);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color var(--transition-normal), border-color var(--transition-normal);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
  gap: 0.75rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  text-decoration: none;
  letter-spacing: -0.02em;
  flex-shrink: 0;
}

.brand-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.brand-badge {
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.15rem 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  color: var(--color-primary);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
}

.nav-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-main);
  text-decoration: none;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.65rem;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
  display: none;
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 0;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.mobile-menu-toggle:hover {
  border-color: var(--color-primary);
  background: var(--bg-card-hover);
}

.hamburger-line {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--text-main);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.mobile-menu-toggle.open .hamburger-line:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.mobile-menu-toggle.open .hamburger-line:nth-child(2) {
  opacity: 0;
}

.mobile-menu-toggle.open .hamburger-line:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Nav Drawer & Backdrop */
.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(85vw, 320px);
  background: var(--bg-surface);
  border-left: 1px solid var(--border-color);
  box-shadow: -8px 0 32px rgba(0, 0, 0, 0.45);
  z-index: 2000;
  transform: translateX(100%);
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1), visibility 0.3s ease;
  display: flex;
  flex-direction: column;
  padding: 1.25rem 1.25rem 2rem;
  visibility: hidden;
  pointer-events: none;
}

.mobile-nav-drawer.open {
  transform: translateX(0);
  visibility: visible;
  pointer-events: auto;
}

.mobile-nav-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
}

.mobile-menu-close {
  font-size: 1.75rem;
  line-height: 1;
  color: var(--text-muted);
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.mobile-menu-close:hover {
  color: var(--color-primary);
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  flex: 1;
  overflow-y: auto;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.85rem 1rem;
  color: var(--text-main);
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.mobile-nav-link:hover {
  background: var(--bg-card);
  border-color: var(--border-color);
  text-decoration: none;
  color: var(--color-primary);
}

.mobile-nav-link.active {
  background: var(--highlight-bg);
  border-color: var(--color-primary);
  color: var(--color-primary);
  font-weight: 600;
}

.mobile-nav-footer {
  padding-top: 1.25rem;
  border-top: 1px solid var(--border-color);
}

.mobile-github-btn {
  width: 100%;
  padding: 0.75rem;
  font-size: 0.95rem;
}

.mobile-nav-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: 1999;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
}

.mobile-nav-backdrop.open {
  opacity: 1;
  visibility: visible;
}

.nav-theme-select {
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 0.45rem 2rem 0.45rem 0.85rem;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  appearance: none;
  -webkit-appearance: none;
  -moz-appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%2389b4fa' stroke-width='2.5' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 12px;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
}

.nav-theme-select:hover {
  border-color: var(--color-primary);
  background-color: var(--bg-card-hover);
}

.nav-theme-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(137, 180, 250, 0.2);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  padding: 0.55rem 1.1rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
  cursor: pointer;
}

.btn-primary {
  background: var(--color-primary);
  /* Ink comes from the active theme so contrast holds on light themes too */
  color: var(--color-on-primary, #11111b);
}

.btn-primary:hover {
  filter: brightness(1.1);
  text-decoration: none;
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-surface);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--color-primary);
  text-decoration: none;
}

.theme-dropdown-btn {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.85rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 0.85rem;
  font-family: var(--font-mono);
}

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

.theme-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-primary);
}

/* ==========================================================================
   Hero Section
   ========================================================================== */
.hero {
  padding: 4rem 0 3rem;
  text-align: center;
  position: relative;
}

.badge-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-bottom: 1.5rem;
}

.badge-item {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-muted);
  font-family: var(--font-mono);
}

.badge-item .dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-success);
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.8rem);
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.03em;
  color: var(--text-main);
  margin-bottom: 1.25rem;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
}

.hero-title span {
  color: var(--color-primary);
}

.hero-subtitle {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--text-muted);
  max-width: 720px;
  margin: 0 auto 2.25rem;
  line-height: 1.55;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.btn-lg {
  padding: 0.8rem 1.6rem;
  font-size: 1rem;
  border-radius: var(--radius-md);
}

/* ==========================================================================
/* ==========================================================================
   KDE Terminal Screenshot Showcase Section
   ========================================================================== */
.showcase-section {
  padding: 1rem 0 4rem;
}

.screenshot-showcase-container {
  max-width: 980px;
  margin: 0 auto 3.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.showcase-tabs {
  display: flex;
  background: var(--bg-base);
  border-bottom: 1px solid var(--border-color);
  padding: 0.35rem 0.6rem;
  gap: 0.35rem;
  overflow-x: auto;
}

.showcase-tab {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.65rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  white-space: nowrap;
  cursor: pointer;
}

.showcase-tab:hover {
  color: var(--text-main);
  background: rgba(255, 255, 255, 0.03);
}

.showcase-tab.active {
  color: var(--color-primary);
  font-weight: 700;
  border-bottom-color: var(--color-primary);
  background: rgba(137, 180, 250, 0.08);
}

.showcase-display {
  padding: 1.75rem 2rem 1.25rem;
  background: var(--bg-surface);
  display: flex;
  flex-direction: column;
  align-items: center;
}

.showcase-image {
  width: 100%;
  max-width: 920px;
  height: auto;
  border-radius: 6px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.showcase-caption-bar {
  margin-top: 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-muted);
  text-align: center;
  padding: 0.4rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  width: 100%;
  max-width: 920px;
}

.showcase-footer-banner {
  background: var(--bg-base);
  border-top: 1px solid var(--border-color);
  padding: 0.85rem 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 0.75rem;
}

/* ==========================================================================
   Dedicated Features Section Layouts (features.html)
   ========================================================================== */
.feature-card-full {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.feature-card-full.reverse {
  grid-template-columns: 1fr 1.1fr;
}

@media (max-width: 900px) {
  .feature-card-full, .feature-card-full.reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.feature-deep-title {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.feature-deep-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.feature-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.feature-bullets li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-main);
  font-size: 0.92rem;
  line-height: 1.55;
}

.feature-bullets li::before {
  content: "▹";
  position: absolute;
  left: 0;
  color: var(--color-primary);
  font-weight: bold;
  font-size: 1.1rem;
  line-height: 1;
}

.feature-img-card {
  width: 100%;
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-color);
  transition: transform var(--transition-normal);
}

.feature-img-card:hover {
  transform: scale(1.01);
}

.audio-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.audio-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.audio-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
}

.audio-icon {
  font-size: 2rem;
  margin-bottom: 0.25rem;
}

.audio-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
}

.audio-desc {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.55;
  flex: 1;
}

/* Authentic Ratatui Box & Border Framework */
.ratatui-box {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  position: relative;
  padding: 0.85rem 1rem;
  background: var(--bg-surface);
  margin-bottom: 0.85rem;
  box-sizing: border-box;
}

.ratatui-box-title {
  position: absolute;
  top: -0.65rem;
  left: 0.85rem;
  background: var(--bg-surface);
  padding: 0 0.4rem;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--color-primary);
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  white-space: nowrap;
}

/* Ratatui Table Component */
.ratatui-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 0.83rem;
  line-height: 1.45;
}

.ratatui-table th {
  color: var(--color-primary);
  font-weight: 700;
  padding: 0.4rem 0.6rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.ratatui-table td {
  padding: 0.45rem 0.6rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.03);
  color: var(--text-main);
}

.ratatui-table tr.tui-selected-row {
  background: var(--highlight-bg) !important;
  border-radius: 4px;
}

.ratatui-table tr.tui-selected-row td {
  color: var(--text-main);
  font-weight: 600;
}

.ratatui-table tr.tui-selected-row td.tui-val-col {
  color: var(--color-primary);
  font-weight: 700;
}

.ratatui-table tr.tui-clickable-row {
  cursor: pointer;
}

.ratatui-table tr.tui-clickable-row:hover {
  background: rgba(255, 255, 255, 0.02);
}

/* TUI Text Utility Tokens */
.tui-fg { color: var(--text-main); }
.tui-muted { color: var(--text-muted); }
.tui-dim { color: var(--text-dim); }
.tui-work { color: var(--color-work); font-weight: 700; }
.tui-short-break { color: var(--color-short-break); font-weight: 700; }
.tui-long-break { color: var(--color-long-break); font-weight: 700; }
.tui-primary { color: var(--color-primary); font-weight: 700; }
.tui-secondary { color: var(--color-secondary); font-weight: 700; }
.tui-warning { color: var(--color-warning); font-weight: 700; }
.tui-success { color: var(--color-success); font-weight: 700; }

.tui-key {
  color: var(--color-primary);
  font-weight: 700;
  margin-right: 0.15rem;
}

.tui-action {
  color: var(--text-main);
  margin-right: 0.85rem;
}

/* Tab 1: Timer Screen Layout */
.ratatui-timer-layout {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.85rem;
  width: 100%;
  max-width: 660px;
  margin: 0 auto;
}

.ratatui-phase-header {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.25rem;
  font-size: 0.95rem;
  font-weight: 700;
  width: 100%;
}

.ratatui-phase-title {
  color: var(--color-work);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ratatui-status-badge {
  color: var(--color-success);
  font-weight: 700;
}

.ratatui-cycle-tracker {
  color: var(--text-muted);
}

/* ASCII Block Digits Clock */
.tui-big-clock {
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: clamp(1.1rem, 2.8vw, 1.75rem);
  line-height: 1.06;
  letter-spacing: 0.04em;
  font-weight: 900;
  color: var(--color-work);
  margin: 0.5rem auto 0.75rem;
  text-align: center;
  white-space: pre;
  display: block;
  user-select: none;
  overflow-x: auto;
}

/* Gauge Block */
.ratatui-gauge-box {
  width: 100%;
}

.ratatui-gauge-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  width: 100%;
}

.ratatui-gauge-bar-track {
  flex: 1;
  height: 16px;
  background: var(--highlight-bg);
  border-radius: 3px;
  overflow: hidden;
  border: 1px solid var(--border-color);
  position: relative;
}

.ratatui-gauge-bar-fill {
  height: 100%;
  width: 50%;
  background: var(--color-work);
  transition: width 0.4s ease, background 0.3s ease;
}

.ratatui-gauge-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--color-primary);
  min-width: 42px;
  text-align: right;
}

/* Target Box */
.ratatui-target-box {
  width: 100%;
}

.ratatui-target-inner {
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Timer Footer Summary */
.ratatui-timer-footer-summary {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: 0.82rem;
  padding: 0.5rem 0.25rem;
}

.tui-summary-line, .tui-controls-line {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

/* Tab 2: Tasks Screen Layout */
.ratatui-tasks-layout {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
}

.ratatui-filter-inner {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.83rem;
}

.tui-filter-tab {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 0.83rem;
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.tui-filter-tab:hover {
  color: var(--text-main);
}

.tui-filter-tab.active {
  color: var(--color-primary);
  font-weight: 700;
  background: var(--highlight-bg);
}

.ratatui-helper-box {
  padding: 0.5rem 0.85rem;
  margin-top: 0.25rem;
}

.ratatui-helper-inner {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  font-size: 0.8rem;
}

/* Tab 3: Stats Screen Layout */
.ratatui-stats-layout {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
}

.ratatui-stats-cards-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.85rem;
}

.ratatui-stat-card {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0.75rem 0.85rem;
}

.ratatui-stat-val {
  font-size: 1.25rem;
  font-weight: 700;
}

.ratatui-stat-sub {
  font-size: 0.78rem;
}

/* 7-Day Bar Chart */
.ratatui-barchart-container {
  padding: 0.5rem 0 0.25rem;
}

.tui-chart-bars {
  display: flex;
  align-items: flex-end;
  justify-content: space-around;
  height: 90px;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.35rem;
}

.tui-bar-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  height: 100%;
  justify-content: flex-end;
}

.tui-bar-fill {
  width: 26px;
  background: var(--color-primary);
  border-radius: 2px 2px 0 0;
  min-height: 4px;
  transition: height 0.4s ease;
}

.tui-bar-label {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* Tab 4: Settings Screen Layout */
.ratatui-settings-layout {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  width: 100%;
  max-width: 860px;
  margin: 0 auto;
}

/* Modal overlays in terminal */
.terminal-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(17, 17, 27, 0.75);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 20;
  padding: 1rem;
}

.terminal-modal {
  background: var(--bg-card);
  border: 1px solid var(--border-active);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  width: 100%;
  max-width: 480px;
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.6rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-primary);
}

.modal-close-btn {
  color: var(--text-muted);
  font-size: 1.1rem;
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--color-work);
}

.modal-body {
  font-size: 0.85rem;
  color: var(--text-main);
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.shortcut-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.25rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

/* ==========================================================================
   Features Grid Section
   ========================================================================== */
.section {
  padding: 4.5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 0.5rem;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-desc {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 620px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  transition: all var(--transition-normal);
}

.feature-card:hover {
  background: var(--bg-card-hover);
  border-color: rgba(137, 180, 250, 0.3);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.feature-icon-box {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.feature-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.feature-body {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* ==========================================================================
   Themes Showcase Gallery
   ========================================================================== */
.themes-showcase {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.themes-palette-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 160px), 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.theme-card {
  /* Button element resets: theme cards are real <button>s for keyboard
     accessibility, so strip the browser chrome to keep the card look */
  appearance: none;
  font: inherit;
  color: inherit;
  text-align: left;
  width: 100%;

  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.theme-card:hover, .theme-card.active {
  border-color: var(--color-primary);
  background: var(--bg-card-hover);
  transform: translateY(-2px);
}

/* Visible focus ring for keyboard users navigating the gallery with Tab */
.theme-card:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.theme-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.theme-swatches {
  display: flex;
  height: 14px;
  border-radius: 4px;
  overflow: hidden;
  border: 1px solid rgba(0, 0, 0, 0.2);
}

.swatch-item {
  flex: 1;
  height: 100%;
}

/* ==========================================================================
   Installation & Quickstart Guide
   ========================================================================== */
.install-hub {
  max-width: 860px;
  margin: 0 auto;
}

.install-nav-wrapper {
  display: flex;
  justify-content: center;
  margin-bottom: 1.25rem;
  width: 100%;
}

.install-nav {
  display: inline-flex;
  flex-wrap: nowrap;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.35rem;
  gap: 0.35rem;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  max-width: 100%;
  overflow-x: auto;
}

.install-tab-btn {
  padding: 0.55rem 1.15rem;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  background: transparent;
  border: 1px solid transparent;
  white-space: nowrap;
  flex-shrink: 0;
  cursor: pointer;
}

.install-tab-btn:hover {
  color: var(--text-main);
  background: var(--bg-surface);
}

.install-tab-btn.active {
  color: var(--color-primary);
  background: var(--bg-surface);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.code-comment {
  color: var(--text-muted);
  opacity: 0.8;
}

.window-dots {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  margin-right: 0.45rem;
}

.window-dots .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  display: inline-block;
}

.window-dots .dot-red { background: #ff5f56; }
.window-dots .dot-yellow { background: #ffbd2e; }
.window-dots .dot-green { background: #27c93f; }

.code-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
}

.code-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.55rem 1rem;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-muted);
  gap: 0.75rem;
}

.code-card-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--text-main);
  font-size: 0.82rem;
}

.code-card-body {
  padding: 1.15rem 1.25rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  background: var(--bg-surface);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  scrollbar-width: thin;
  scrollbar-color: var(--border-color) var(--bg-surface);
}

.code-card-body::-webkit-scrollbar {
  height: 6px;
  width: 6px;
}

.code-card-body::-webkit-scrollbar-track {
  background: var(--bg-surface);
  border-radius: 3px;
}

.code-card-body::-webkit-scrollbar-thumb {
  background: var(--border-color);
  border-radius: 3px;
}

.code-card-body::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

.code-card-body pre {
  margin: 0;
  white-space: pre;
  color: var(--text-main);
}

.copy-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.78rem;
  font-family: var(--font-mono);
  font-weight: 600;
  transition: all var(--transition-fast);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  flex-shrink: 0;
}

.copy-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
  background: var(--bg-card-hover);
}

.copy-btn:active {
  transform: scale(0.96);
}

/* ==========================================================================
   Keybindings Reference Table
   ========================================================================== */
.keybindings-hub {
  max-width: 900px;
  margin: 0 auto;
}

.search-bar-wrapper {
  margin-bottom: 1.5rem;
}

.search-input {
  width: 100%;
  padding: 0.85rem 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast);
  box-sizing: border-box;
}

.search-input:focus {
  border-color: var(--color-primary);
}

.keybindings-table-wrapper {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.keybindings-table {
  width: 100%;
  min-width: 520px;
  border-collapse: collapse;
}

.keybindings-table th {
  background: var(--bg-card);
  padding: 0.85rem 1.25rem;
  text-align: left;
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  font-family: var(--font-mono);
  border-bottom: 1px solid var(--border-color);
}

.keybindings-table td {
  padding: 0.9rem 1.25rem;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border-color);
}

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

.keybindings-table tr:hover {
  background: var(--highlight-bg);
}

.key-badge {
  display: inline-block;
  padding: 0.2rem 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-weight: 700;
  color: var(--color-primary);
  font-size: 0.85rem;
}

/* ==========================================================================
   Footer
   ========================================================================== */
.site-footer {
  margin-top: auto;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 2.5rem;
  margin-bottom: 2.5rem;
}

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

.footer-tagline {
  font-size: 0.88rem;
  line-height: 1.55;
  color: var(--text-muted);
}

.footer-col-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

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

.footer-links a:hover {
  color: var(--text-main);
  text-decoration: none;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 0.85rem;
}

/* Toast feedback notification */
.toast-notice {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--bg-card);
  color: var(--text-main);
  border: 1px solid var(--color-primary);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  z-index: 9999;
  transform: translateY(100px);
  opacity: 0;
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events: none;
}

.toast-notice.show {
  transform: translateY(0);
  opacity: 1;
}

/* ============================================================================
   11. Dedicated FAQ Hub Component Styles
   ============================================================================ */
.faq-search-box {
  max-width: 600px;
  margin: 0 auto 2.5rem;
  position: relative;
}

.faq-search-input {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 2.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: var(--font-sans);
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
  box-sizing: border-box;
}

.faq-search-input:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(137, 180, 250, 0.15);
}

.faq-search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-dim);
  pointer-events: none;
  font-size: 1rem;
}

.faq-category-pills {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 3rem;
}

.faq-pill-btn {
  padding: 0.45rem 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: 9999px;
  color: var(--text-muted);
  font-size: 0.85rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.faq-pill-btn:hover {
  color: var(--text-main);
  border-color: var(--color-primary);
}

.faq-pill-btn.active {
  background: var(--color-primary);
  color: var(--color-on-primary, #11111b);
  border-color: var(--color-primary);
  font-weight: 600;
}

.faq-group {
  margin-bottom: 3.5rem;
}

.faq-group-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.faq-group-icon {
  font-size: 1.4rem;
}

.faq-accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.faq-item:hover {
  border-color: var(--border-hover);
}

.faq-item[open] {
  border-color: var(--color-primary);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
}

.faq-item summary {
  padding: 1.1rem 1.4rem;
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--text-main);
  user-select: none;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-chevron {
  width: 18px;
  height: 18px;
  transition: transform 0.2s ease;
  color: var(--color-primary);
  flex-shrink: 0;
}

.faq-item[open] .faq-chevron {
  transform: rotate(180deg);
}

.faq-content {
  padding: 0 1.4rem 1.4rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.65;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  margin-top: 0.5rem;
  padding-top: 1rem;
}

.faq-content p {
  margin-bottom: 0.75rem;
}

.faq-content p:last-child {
  margin-bottom: 0;
}

.faq-content pre {
  margin: 0.75rem 0;
  background: var(--bg-base);
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.faq-content code {
  font-family: var(--font-mono);
  background: var(--bg-base);
  padding: 0.15rem 0.4rem;
  border-radius: 4px;
  font-size: 0.88em;
  color: var(--color-primary);
  border: 1px solid var(--border-color);
}

.faq-content kbd {
  font-family: var(--font-mono);
  background: var(--bg-card);
  padding: 0.15rem 0.45rem;
  border-radius: 4px;
  font-size: 0.82em;
  color: var(--color-accent);
  border: 1px solid var(--border-hover);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.2);
}

.faq-empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--text-dim);
  display: none;
}

.faq-empty-state.show {
  display: block;
}

/* ============================================================================
   Comprehensive Responsive Breakpoints Engine
   ============================================================================ */

@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 2rem;
  }
}

@media (max-width: 900px) {
  .hero-title { font-size: clamp(2rem, 4.5vw, 2.8rem); }
  .footer-grid { grid-template-columns: 1fr; gap: 2rem; }
  .terminal-body { padding: 1.25rem 1rem; }
  .clock-display { transform: scale(0.85); }
  .feature-card-full, .feature-card-full.reverse {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }
  .section {
    padding: 3.25rem 0;
  }
  .section-title {
    font-size: clamp(1.6rem, 4.5vw, 2.2rem);
  }
  .hero {
    padding: 3rem 0 2rem;
  }
  .hero-cta {
    flex-direction: column;
    gap: 0.75rem;
    width: 100%;
    max-width: 340px;
    margin: 0 auto 2.5rem;
  }
  .hero-cta .btn {
    width: 100%;
  }
  .badge-strip {
    gap: 0.45rem;
  }
  .badge-item {
    font-size: 0.76rem;
    padding: 0.25rem 0.65rem;
  }
  .showcase-display {
    padding: 1rem 0.75rem;
  }
  .showcase-caption-bar {
    font-size: 0.8rem;
    padding: 0.45rem 0.75rem;
  }
  .showcase-footer-banner {
    flex-direction: column;
    text-align: center;
    gap: 0.4rem;
    padding: 0.75rem 1rem;
  }
  .themes-palette-grid {
    grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
    gap: 0.75rem;
  }
  .ratatui-stats-cards-row {
    grid-template-columns: 1fr;
  }
  .toast-notice {
    bottom: 1rem;
    right: 1rem;
    left: 1rem;
    text-align: center;
  }
}

@media (max-width: 640px) {
  .nav-menu {
    display: none;
  }
  .mobile-menu-toggle {
    display: inline-flex;
  }
  .nav-github-btn span {
    display: none;
  }
  .nav-github-btn {
    padding: 0.45rem 0.6rem;
  }
  .header-inner {
    height: 4rem;
    gap: 0.4rem;
  }
  .brand {
    font-size: 1.1rem;
    gap: 0.5rem;
  }
  .brand-icon {
    width: 28px;
    height: 28px;
  }
  .brand-icon img {
    width: 24px;
    height: 24px;
  }
  .brand-badge {
    font-size: 0.65rem;
    padding: 0.1rem 0.4rem;
  }
  .nav-actions {
    gap: 0.4rem;
  }
  .nav-theme-select {
    font-size: 0.76rem;
    padding: 0.35rem 1.5rem 0.35rem 0.55rem;
    max-width: 120px;
  }
  .container {
    padding: 0 1rem;
  }
  .hero-title {
    font-size: clamp(1.75rem, 5.5vw, 2.3rem);
  }
  .hero-subtitle {
    font-size: 0.98rem;
  }
  .feature-deep-title {
    font-size: 1.45rem;
  }
  .feature-deep-lead {
    font-size: 0.95rem;
  }
  .feature-bullets li {
    font-size: 0.88rem;
  }
  .install-nav {
    width: 100%;
    padding: 0.35rem;
    gap: 0.35rem;
  }
  .install-tab-btn {
    flex: 1 1 calc(50% - 0.4rem);
    text-align: center;
    padding: 0.45rem 0.65rem;
    font-size: 0.78rem;
  }
  .install-hint {
    padding: 0.75rem 0.85rem;
    font-size: 0.8rem;
  }
  .code-card-header {
    padding: 0.5rem 0.75rem;
    font-size: 0.76rem;
  }
  .code-card-title {
    font-size: 0.76rem;
  }
  .code-card-body {
    padding: 0.9rem 0.85rem;
    font-size: 0.78rem;
  }
  .copy-btn {
    padding: 0.25rem 0.6rem;
    font-size: 0.72rem;
  }
  .faq-search-box {
    margin-bottom: 1.5rem;
  }
  .faq-search-input {
    padding: 0.75rem 1rem 0.75rem 2.5rem;
    font-size: 0.9rem;
  }
  .faq-search-icon {
    left: 0.85rem;
    font-size: 0.95rem;
  }
  .faq-category-pills {
    justify-content: flex-start;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    padding-bottom: 0.4rem;
    scrollbar-width: none;
    flex-wrap: nowrap;
    margin-bottom: 2rem;
  }
  .faq-category-pills::-webkit-scrollbar {
    display: none;
  }
  .faq-pill-btn {
    font-size: 0.78rem;
    padding: 0.35rem 0.75rem;
    white-space: nowrap;
  }
  .faq-group-title {
    font-size: 1.18rem;
  }
  details.faq-item > summary, .faq-item summary {
    font-size: 0.92rem;
    padding: 0.9rem 1rem;
  }
  .faq-content {
    padding: 0 1rem 1.1rem;
    font-size: 0.88rem;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }
}

@media (max-width: 380px) {
  .brand span:not(.brand-badge) {
    font-size: 0.98rem;
  }
  .brand-badge {
    display: none;
  }
  .nav-theme-select {
    max-width: 105px;
    font-size: 0.72rem;
    padding-right: 1.25rem;
  }
  .container {
    padding: 0 0.75rem;
  }
  .badge-item {
    font-size: 0.7rem;
    padding: 0.2rem 0.5rem;
  }
  .hero-title {
    font-size: 1.55rem;
  }
  .hero-subtitle {
    font-size: 0.9rem;
  }
  .themes-palette-grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  }
}