/* ================================
   THE DESCENT: CODE BROWN
   Professional Terminal Aesthetic
   ================================ */

/* === Design System === */
:root {
  /* Colors - Authentic Phosphor Palette */
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #1a1a1a;
  --bg-component: #2a2a2a;

  --color-primary: #33ff33;      /* Authentic phosphor green */
  --color-accent: #00ffff;       /* Cyan */
  --color-dim: #66ff66;          /* Lightened for readability (was #22cc22) */
  --color-warning: #ffff00;      /* Yellow */
  --color-danger: #ff0000;       /* Red */

  /* Typography - Authentic Terminal Font */
  --font-mono: 'VT323', 'Courier New', 'Consolas', 'Monaco', monospace;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;

  /* CRT Effects - Subtle Phosphor Glow (reduced from cheesy levels) */
  --glow-primary: 0 0 3px var(--color-primary),
                  0 0 8px rgba(51, 255, 51, 0.4);
  --glow-accent: 0 0 3px var(--color-accent),
                 0 0 8px rgba(0, 255, 255, 0.4);
  --glow-strong: 0 0 5px var(--color-primary),
                 0 0 12px rgba(51, 255, 51, 0.5);
  --border-width: 2px;

  /* CRT Animation */
  --scanline-opacity: 0.08;
  --flicker-speed: 0.5s;
}

/* === Reset & Base Styles === */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--bg-primary);
  color: var(--color-primary);
  font-family: var(--font-mono);
  font-size: 18px; /* Increased from 16px per user feedback */
  line-height: 1.6;
  min-height: 100vh;
  position: relative;
}

/* === CRT Effects === */

/* Scanlines Overlay - More Visible */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    rgba(0, 0, 0, 0.25) 0px,
    transparent 1px,
    transparent 2px,
    rgba(0, 0, 0, 0.25) 3px
  );
  animation: scanline-flicker 0.5s infinite alternate;
  opacity: 1;
}

/* Vignette (Lighter) + Visible Noise */
body::after {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9998;
  background:
    radial-gradient(ellipse at center, transparent 0%, rgba(0, 0, 0, 0.3) 100%),
    url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' /%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.15'/%3E%3C/svg%3E");
}

/* Scanline animation */
@keyframes scanline-flicker {
  0% { opacity: 0.7; }
  100% { opacity: 1; }
}

/* === Typography === */
h1, h2, h3, h4, h5, h6 {
  font-weight: bold;
  line-height: 1.2;
}

h1 {
  font-size: 38px; /* Increased for visibility */
  text-shadow: var(--glow-primary);
  letter-spacing: 2px;
}

h2 {
  font-size: 28px; /* Increased */
  text-shadow: var(--glow-primary);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 20px; /* Increased */
  color: var(--color-primary);
}

p {
  margin-bottom: var(--spacing-md);
}

/* === Links === */
a {
  color: var(--color-accent);
  text-decoration: none;
  transition: all 0.15s ease;
  position: relative;
}

a:hover {
  color: var(--color-warning);
  text-shadow: var(--glow-accent);
  text-decoration: underline;
  transform: scale(1.02);
  display: inline-block;
}

a:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
  text-shadow: var(--glow-accent);
  border-radius: 2px;
}

a:active {
  transform: scale(0.98);
  text-shadow: var(--glow-primary);
}

/* === Keyboard Keys === */
kbd {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--bg-component);
  border: 1px solid var(--color-dim);
  border-radius: 3px;
  box-shadow: 0 2px 0 #111,
              inset 0 0 5px rgba(51, 255, 51, 0.1);
  color: var(--color-accent);
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: bold;
  white-space: nowrap;
  transition: all 0.15s ease;
  position: relative;
  top: 0;
}

kbd:hover {
  top: -1px;
  box-shadow: 0 3px 0 #111,
              inset 0 0 8px rgba(51, 255, 51, 0.2),
              0 0 10px rgba(0, 255, 255, 0.3);
  border-color: var(--color-accent);
}

/* === Header === */
header {
  background: var(--bg-secondary);
  border-bottom: var(--border-width) solid var(--color-primary);
  padding: var(--spacing-xl) var(--spacing-md);
  text-align: center;
  box-shadow: 0 4px 20px rgba(51, 255, 51, 0.15);
  position: relative;
}

header h1 {
  margin: 0 0 var(--spacing-sm) 0;
  animation: subtle-glow-pulse 4s ease-in-out infinite;
}

@keyframes subtle-glow-pulse {
  0%, 100% { text-shadow: var(--glow-primary); }
  50% { text-shadow: var(--glow-strong); }
}

.tagline {
  font-size: 20px; /* Increased to 20px */
  color: var(--color-accent);
  margin: 0.25rem 0; /* Reduced spacing */
  letter-spacing: 1px;
}

.subtitle {
  font-size: 22px; /* Increased to 22px */
  color: var(--color-warning);
  margin: 0.25rem 0; /* Reduced spacing */
  font-style: italic;
  text-shadow: 0 0 5px var(--color-warning);
}

.author {
  font-size: 18px; /* Increased to 18px */
  color: var(--color-dim);
  margin: 0.25rem 0 0 0; /* Reduced spacing */
}

/* === Main Layout === */
main {
  display: flex;
  max-width: 1200px;
  margin: var(--spacing-xl) auto;
  gap: var(--spacing-xl);
  padding: 0 var(--spacing-md);
}

/* === Game Container === */
.game-container {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

#game-canvas {
  border: var(--border-width) solid var(--color-primary);
  box-shadow: var(--glow-strong); /* Enhanced CRT glow */
  image-rendering: pixelated;
  image-rendering: crisp-edges;
  background: var(--bg-primary);
  border-radius: 3px; /* Subtle CRT curvature */
  position: relative;
  transition: box-shadow 0.3s ease;
}

/* CRT glass reflection effect */
#game-canvas:hover {
  box-shadow: var(--glow-strong),
              inset 0 0 100px rgba(51, 255, 51, 0.05);
}

/* === Controls Sidebar === */
.controls-sidebar {
  width: 300px;
  background: var(--bg-tertiary);
  border: 1px solid var(--color-primary);
  border-radius: 4px;
  padding: var(--spacing-lg);
  align-self: flex-start;
  box-shadow: var(--glow-primary),
              0 8px 32px rgba(0, 0, 0, 0.5);
  position: relative;
}

.controls-sidebar::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(51, 255, 51, 0.05) 0%, transparent 50%);
  pointer-events: none;
  border-radius: 4px;
}

.controls-sidebar h2 {
  margin-top: 0;
  border-bottom: var(--border-width) solid var(--color-dim);
  padding-bottom: var(--spacing-sm);
}

.desktop-notice {
  background: rgba(255, 255, 0, 0.1);
  border: 1px solid var(--color-warning);
  border-radius: 3px;
  padding: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  text-align: center;
  color: var(--color-warning);
  font-size: 16px;
  text-shadow: 0 0 3px rgba(255, 255, 0, 0.5);
}

.controls-section {
  margin-bottom: var(--spacing-lg);
}

.controls-section:last-of-type {
  margin-bottom: var(--spacing-md);
}

.controls-section h3 {
  margin: 0 0 var(--spacing-sm) 0;
  color: var(--color-accent);
  border-bottom: 1px solid var(--color-dim);
  padding-bottom: var(--spacing-xs);
  font-size: 20px; /* Increased to 20px */
}

.control-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
  border-bottom: 1px dotted #003300;
  gap: var(--spacing-sm);
}

.control-item:last-child {
  border-bottom: none;
}

.control-item .description {
  font-size: 18px; /* Increased to 18px */
  color: var(--color-dim);
}

.game-tip {
  background: var(--bg-component);
  border: 1px solid var(--color-dim);
  border-left: 3px solid var(--color-accent);
  padding: var(--spacing-md);
  margin-top: var(--spacing-lg);
  border-radius: 3px;
}

.game-tip strong {
  color: var(--color-accent);
}

.game-tip p {
  margin: 0;
  font-size: 18px; /* Increased to 18px */
  line-height: 1.5;
}

/* === Desperation Meter === */
#desperation-meter {
  width: 800px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.meter-label {
  font-size: 14px;
  font-weight: bold;
  color: var(--color-primary);
  text-align: left;
}

.meter-bar-container {
  width: 100%;
  height: 30px;
  background-color: var(--bg-primary);
  border: var(--border-width) solid var(--color-primary);
  position: relative;
  overflow: hidden;
}

.meter-bar {
  height: 100%;
  width: 0%;
  background-color: var(--color-primary);
  transition: width 0.1s linear, background-color 0.3s ease;
}

.meter-percentage {
  font-size: 12px;
  color: var(--color-primary);
  text-align: right;
  font-weight: bold;
}

/* === Story Button === */
.story-button-container {
  text-align: center;
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-md);
}

.story-button {
  background: var(--bg-component);
  color: var(--color-primary);
  border: var(--border-width) solid var(--color-primary);
  padding: var(--spacing-md) var(--spacing-xl);
  font-family: var(--font-mono);
  font-size: 20px;
  cursor: pointer;
  border-radius: 4px;
  text-shadow: var(--glow-primary);
  box-shadow: var(--glow-primary);
  transition: all 0.2s ease;
}

.story-button:hover {
  background: var(--color-primary);
  color: var(--bg-primary);
  text-shadow: none;
  box-shadow: var(--glow-strong);
  transform: translateY(-2px);
}

.story-button:active {
  transform: translateY(0);
  box-shadow: var(--glow-primary);
}

/* === Footer === */
footer {
  background: var(--bg-secondary);
  border-top: var(--border-width) solid var(--color-primary);
  padding: var(--spacing-xl) var(--spacing-md);
  margin-top: 4rem;
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-xl);
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.footer-section h3 {
  color: var(--color-accent);
  margin-bottom: var(--spacing-sm);
  font-size: 20px; /* Increased to 20px */
}

.footer-section p {
  margin: var(--spacing-xs) 0;
  color: var(--color-dim);
  font-size: 18px; /* Increased to 18px */
}

.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--color-dim);
  color: var(--color-dim);
  font-size: 18px; /* Increased to 18px */
}

.footer-bottom p {
  margin: 0;
}

/* === Modal Styles === */
#intro-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1000;
}

.modal-overlay {
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.95);
  display: flex;
  justify-content: center;
  align-items: center;
  animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.modal-content {
  background-color: var(--bg-tertiary);
  border: 3px solid var(--color-primary);
  padding: 30px;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 0 30px rgba(0, 255, 0, 0.3);
}

.modal-content h2 {
  margin: 0 0 20px 0;
  font-size: 28px;
  color: var(--color-primary);
  text-align: center;
  text-shadow: var(--glow-primary);
}

.modal-story {
  font-family: var(--font-mono);
  font-size: 18px; /* Increased to 18px */
  line-height: 1.6;
  color: var(--color-primary);
  background-color: var(--bg-primary);
  padding: 20px;
  border: 1px solid var(--color-primary);
  margin: 0 0 20px 0;
  white-space: pre;
  overflow-x: auto;
}

.modal-buttons {
  display: flex;
  gap: 15px;
  justify-content: center;
  align-items: center;
}

.btn-primary, .btn-secondary {
  font-family: var(--font-mono);
  font-size: 16px;
  padding: 12px 30px;
  border: 2px solid var(--color-primary);
  background-color: var(--bg-primary);
  color: var(--color-primary);
  cursor: pointer;
  transition: all 0.15s ease;
  font-weight: bold;
  position: relative;
  transform: translateY(0);
}

.btn-primary:hover {
  background-color: var(--color-primary);
  color: var(--bg-primary);
  box-shadow: var(--glow-strong);
  transform: translateY(-2px);
}

.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--glow-primary);
}

.btn-primary:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 4px;
}

.btn-secondary {
  background-color: transparent;
  border-color: var(--color-dim);
  color: var(--color-dim);
  padding: 12px 20px;
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 0 10px rgba(51, 255, 51, 0.3);
  transform: translateY(-1px);
}

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

.btn-secondary:focus-visible {
  outline: 2px solid var(--color-dim);
  outline-offset: 4px;
}

/* === Boot Sequence === */
#boot-sequence {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 10000;
  animation: bootFadeIn 0.3s ease;
}

.boot-overlay {
  width: 100%;
  height: 100%;
  background-color: var(--bg-primary);
  display: flex;
  justify-content: center;
  align-items: center;
  padding: var(--spacing-lg);
}

.boot-content {
  max-width: 800px;
  width: 100%;
  text-align: center;
}

.boot-logo {
  margin-bottom: var(--spacing-xl);
}

.boot-divider {
  font-family: var(--font-mono);
  color: var(--color-primary);
  opacity: 0.5;
  margin: var(--spacing-md) 0;
  font-size: 14px;
}

.boot-title {
  font-family: var(--font-mono);
  font-size: 48px;
  font-weight: bold;
  color: var(--color-primary);
  text-shadow: var(--glow-strong);
  margin: var(--spacing-lg) 0;
  letter-spacing: 0.3em;
  animation: logoGlow 2s ease-in-out infinite alternate;
}

.boot-subtitle {
  font-family: var(--font-mono);
  font-size: 32px;
  font-weight: bold;
  color: var(--color-primary);
  text-shadow: var(--glow-primary);
  margin: var(--spacing-md) 0;
  letter-spacing: 0.4em;
}

.boot-system {
  font-family: var(--font-mono);
  font-size: 14px;
  color: var(--color-dim);
  margin-top: var(--spacing-lg);
  letter-spacing: 0.05em;
}

@keyframes logoGlow {
  0% { text-shadow: var(--glow-primary); opacity: 0.9; }
  100% { text-shadow: var(--glow-strong); opacity: 1; }
}

.boot-messages {
  min-height: 150px;
  max-height: 200px;
  overflow-y: auto;
  text-align: left;
  margin: var(--spacing-xl) 0;
  padding: var(--spacing-md);
  background: var(--bg-secondary);
  border: 1px solid var(--color-dim);
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 18px; /* Increased to 18px */
}

.boot-message {
  color: var(--color-primary);
  margin: var(--spacing-xs) 0;
  animation: bootMessageAppear 0.2s ease;
  text-shadow: 0 0 5px var(--color-primary);
}

@keyframes bootMessageAppear {
  0% { opacity: 0; transform: translateX(-10px); }
  100% { opacity: 1; transform: translateX(0); }
}

.boot-progress {
  width: 100%;
  height: 30px;
  background: var(--bg-secondary);
  border: var(--border-width) solid var(--color-primary);
  border-radius: 2px;
  overflow: hidden;
  margin: var(--spacing-lg) 0;
  box-shadow: inset 0 0 10px rgba(0, 0, 0, 0.5);
}

.boot-progress-bar {
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg,
    var(--color-dim) 0%,
    var(--color-primary) 50%,
    var(--color-dim) 100%);
  background-size: 200% 100%;
  animation: progressShimmer 1.5s ease infinite;
  box-shadow: var(--glow-primary);
  transition: width 0.1s linear;
}

@keyframes progressShimmer {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

.boot-hint {
  font-family: var(--font-mono);
  font-size: 18px; /* Increased to 18px */
  color: var(--color-accent);
  margin-top: var(--spacing-lg);
  animation: bootHintBlink 1.5s ease-in-out infinite;
  text-shadow: 0 0 8px var(--color-accent);
}

@keyframes bootHintBlink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.boot-fade-out {
  animation: bootFadeOut 0.3s ease forwards;
}

@keyframes bootFadeIn {
  0% { opacity: 0; }
  100% { opacity: 1; }
}

@keyframes bootFadeOut {
  0% { opacity: 1; }
  100% { opacity: 0; }
}

/* Boot sequence responsive */
@media (max-width: 768px) {
  .ascii-logo {
    font-size: 6px;
  }

  .boot-messages {
    font-size: 12px;
    min-height: 120px;
  }
}

@media (max-width: 480px) {
  .ascii-logo {
    font-size: 5px;
  }

  .boot-hint {
    font-size: 11px;
  }
}

/* === Responsive Design === */

/* Tablet and below - Stack sidebar below game */
@media (max-width: 1024px) {
  main {
    flex-direction: column;
    align-items: center;
  }

  .controls-sidebar {
    width: 100%;
    max-width: 600px;
    order: 2;
  }

  .game-container {
    order: 1;
  }
}

/* Small tablets and large phones */
@media (max-width: 768px) {
  header h1 {
    font-size: 24px;
  }

  .tagline {
    font-size: 14px;
  }

  main {
    margin: var(--spacing-md) auto;
  }

  .controls-sidebar {
    width: 100%;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }
}

/* Mobile phones */
@media (max-width: 600px) {
  #game-canvas {
    max-width: 100%;
    height: auto;
  }

  #desperation-meter {
    max-width: 100%;
  }

  header {
    padding: var(--spacing-md);
  }

  header h1 {
    font-size: 20px;
    letter-spacing: 1px;
  }

  .controls-section {
    margin-bottom: var(--spacing-md);
  }

  .control-item {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-xs);
  }

  kbd {
    font-size: 0.75rem;
  }
}

/* Very small screens */
@media (max-width: 375px) {
  body {
    font-size: 13px;
  }

  header h1 {
    font-size: 18px;
  }

  .modal-content {
    padding: 20px;
  }
}