/* GoScript Website - Professional Dev Tool Design */

/* Fonts */
@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  /* Fonts */
  --font-mono:
    'JetBrains Mono', 'Commit Mono', ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-display:
    'Manrope', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Brand Colors */
  --color-primary: #ff4757; /* A more vibrant coral/red */
  --color-primary-glow: rgba(255, 71, 87, 0.3);
  --color-primary-dim: rgba(255, 71, 87, 0.1);

  /* Language Colors */
  --color-go: #00add8;
  --color-ts: #3178c6;

  /* Background Colors */
  --color-bg: #050505; /* Almost pure black for depth */
  --color-bg-subtle: #0a0a0a;
  --color-bg-card: #111111;
  --color-bg-input: #161616;

  /* Surface Overlays */
  --color-surface-hover: rgba(255, 255, 255, 0.03);
  --color-surface-active: rgba(255, 255, 255, 0.05);

  /* Text Colors */
  --color-text-main: #ededed;
  --color-text-muted: #888888;
  --color-text-subtle: #444444;

  /* Borders */
  --color-border: #222222;
  --color-border-hover: #333333;
  --color-border-active: #444444;

  /* Spacing & Layout */
  --max-width: 1100px;
  --header-height: 70px;
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-card:
    0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-glow: 0 0 80px -20px var(--color-primary-glow);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-display);
  background-color: var(--color-bg);
  color: var(--color-text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Typography Utility */
h1,
h2,
h3,
h4,
h5,
h6 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease;
}

code,
pre {
  font-family: var(--font-mono);
}

/* Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header */
.header {
  height: var(--header-height);
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
}

.header-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  font-size: 1.125rem;
  color: var(--color-text-main);
}

.logo-icon {
  width: 24px;
  height: 24px;
  fill: var(--color-primary);
}

.nav {
  display: flex;
  gap: 0.5rem;
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all 0.2s ease;
}

.nav-link:hover {
  color: var(--color-text-main);
  background: var(--color-surface-hover);
}

.nav-link.active {
  color: var(--color-text-main);
}

/* Bracket styling for nav links */
.nav-link.bracket::before {
  content: '[';
  color: var(--color-border-active);
  margin-right: 4px;
  transition: color 0.2s;
}
.nav-link.bracket::after {
  content: ']';
  color: var(--color-border-active);
  margin-left: 4px;
  transition: color 0.2s;
}
.nav-link.bracket:hover::before,
.nav-link.bracket:hover::after {
  color: var(--color-text-muted);
}

/* Hero Section */
.hero {
  padding: 6rem 0 4rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Glow effect behind hero */
.hero::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(
    circle,
    var(--color-primary-dim) 0%,
    transparent 70%
  );
  z-index: -1;
  pointer-events: none;
  opacity: 0.5;
}

.hero h2 {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.25rem;
  background: linear-gradient(to bottom right, #fff, #aaa);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  letter-spacing: -0.03em;
}

.hero-description {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 640px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 4rem;
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 1.5rem;
  height: 48px;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background: var(--color-text-main);
  color: var(--color-bg);
  border-color: var(--color-text-main);
}

.btn-primary:hover {
  background: #fff;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.15);
}

.btn-secondary {
  background: var(--color-surface-hover);
  color: var(--color-text-main);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  background: var(--color-surface-active);
  border-color: var(--color-border-hover);
}

/* Code Demo / Terminal */
.demo {
  margin-bottom: 6rem;
}

.terminal-window {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow:
    var(--shadow-card),
    0 0 0 1px rgba(255, 255, 255, 0.02) inset;
  overflow: hidden;
  max-width: 900px;
  margin: 0 auto;
}

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

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--color-border-active);
}
.terminal-dot:nth-child(1) {
  background-color: #ff5f56;
}
.terminal-dot:nth-child(2) {
  background-color: #ffbd2e;
}
.terminal-dot:nth-child(3) {
  background-color: #27c93f;
}

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

.code-comparison {
  display: grid;
  grid-template-columns: 1fr 1px 1fr;
  background: var(--color-bg-card);
}

.comparison-divider {
  background: var(--color-border);
}

.code-panel {
  padding: 0;
  display: flex;
  flex-direction: column;
}

.panel-label {
  padding: 0.75rem 1rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--color-text-subtle);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
}

.panel-label span:last-child {
  font-family: var(--font-mono);
  text-transform: none;
  color: var(--color-text-muted);
}

.code-content {
  padding: 1rem;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  line-height: 1.6;
}

/* Features Grid */
.features {
  padding: 4rem 0;
  border-top: 1px solid var(--color-border);
}

.section-title {
  font-size: 2rem;
  text-align: center;
  margin-bottom: 3rem;
  color: var(--color-text-main);
}

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

.feature-card {
  padding: 1.5rem;
  background: var(--color-bg-subtle);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.feature-card:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-card);
  transform: translateY(-2px);
}

.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  display: inline-block;
  padding: 0.5rem;
  background: rgba(255, 255, 255, 0.03);
  border-radius: var(--radius-sm);
}

.feature-card h4 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  color: var(--color-text-main);
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
}

/* Doc Links */
.doc-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1rem;
}

.doc-links a {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  transition: color 0.15s ease;
}

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

/* Install Section */
.install-section {
  padding: 4rem 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.install-section .section-title {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin-bottom: 1.5rem;
}

.install-container {
  max-width: 540px;
  margin: 0 auto;
}

/* Tabs */
.install-tabs {
  margin-bottom: 1.5rem;
}

.tab-list {
  display: flex;
  gap: 0.25rem;
  margin-bottom: 0.75rem;
}

.tab {
  background: none;
  border: none;
  padding: 0.375rem 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

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

.tab.active {
  color: var(--color-text-main);
  background: var(--color-bg-card);
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

/* Command Buttons */
.command {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 0.625rem 0.875rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.command:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg-input);
}

.command-text {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--color-text-main);
  text-align: left;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.copy-icon {
  flex-shrink: 0;
  width: 14px;
  height: 14px;
  opacity: 0;
  transition: opacity 0.15s ease;
  color: var(--color-text-muted);
}

.copy-icon::before {
  content: '';
  display: block;
  width: 14px;
  height: 14px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%23888888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Crect x='9' y='9' width='13' height='13' rx='2' ry='2'/%3E%3Cpath d='M5 15H4a2 2 0 0 1-2-2V4a2 2 0 0 1 2-2h9a2 2 0 0 1 2 2v1'/%3E%3C/svg%3E");
  background-size: contain;
}

.command:hover .copy-icon {
  opacity: 1;
}

.command.copied .copy-icon::before {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='14' height='14' viewBox='0 0 24 24' fill='none' stroke='%2327c93f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='20 6 9 17 4 12'/%3E%3C/svg%3E");
}

.command.copied .copy-icon {
  opacity: 1;
}

/* Install Steps */
.install-steps {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.install-step {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.step-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-subtle);
  min-width: 52px;
  text-align: right;
}

.install-step .command {
  flex: 1;
}

/* Footer */
.footer {
  padding: 2rem 0;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.8125rem;
  background: var(--color-bg);
}

.footer .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

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

.footer a:hover {
  color: var(--color-text-main);
}

.footer .sep {
  color: var(--color-text-subtle);
}

.footer .copyright {
  width: 100%;
  margin-top: 0.5rem;
  font-size: 0.6875rem;
  color: var(--color-text-subtle);
}

/* 
   PLAYGROUND & TESTS SPECIFIC 
   Inherits base theme but adds layout specific overrides 
*/

.app-layout {
  display: flex;
  flex-direction: column;
  height: calc(100vh - var(--header-height));
  padding: 1rem;
  gap: 1rem;
}

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

.select-input,
.search-input {
  background: var(--color-bg-input);
  border: 1px solid var(--color-border);
  color: var(--color-text-main);
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  outline: none;
  font-family: var(--font-display);
  min-width: 240px;
}

.select-input:focus,
.search-input:focus {
  border-color: var(--color-border-active);
  box-shadow: 0 0 0 2px rgba(255, 255, 255, 0.05);
}

.btn-sm {
  height: 32px;
  padding: 0 1rem;
  font-size: 0.8125rem;
}

/* Editor Grid */
.editor-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  flex: 1;
  min-height: 0;
}

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

.panel-header {
  padding: 0.5rem 1rem;
  background: var(--color-bg-subtle);
  border-bottom: 1px solid var(--color-border);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  display: flex;
  justify-content: space-between;
}

.panel-body {
  flex: 1;
  position: relative;
  overflow: hidden;
}

.panel-body pre {
  margin: 0;
  padding: 0;
  font-size: 0.875rem;
  white-space: pre-wrap;
  font-family: var(--font-mono);
  color: var(--color-text-main);
  height: 100%;
  box-sizing: border-box;
  overflow: auto;
}

.panel-body pre code {
  display: block;
  padding: 1rem;
  background: transparent;
}

.panel-body pre code.hljs {
  background: transparent;
}

.monaco-container {
  width: 100%;
  height: 100%;
}

.output-panel {
  margin: 0;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  white-space: pre-wrap;
  color: var(--color-text-main);
  overflow: auto;
}

.editor-textarea {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  background: transparent;
  color: var(--color-text-main);
  border: none;
  resize: none;
  padding: 1rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  outline: none;
}

.panel-body pre.error {
  color: var(--color-primary);
}

/* Tests Browser */
.tests-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 1rem;
  height: calc(100vh - var(--header-height));
  padding: 1rem;
}

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

.test-list {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
}

.test-item {
  padding: 0.5rem 0.75rem;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  font-family: var(--font-mono);
}

.test-item:hover {
  background: var(--color-surface-hover);
  color: var(--color-text-main);
}

.test-item.active {
  background: var(--color-surface-active);
  color: var(--color-text-main);
  font-weight: 500;
}

/* Syntax Highlight Colors (custom classes for when we add highlighting) */
.token.keyword {
  color: #ff79c6;
}
.token.string {
  color: #f1fa8c;
}
.token.function {
  color: #8be9fd;
}
.token.number {
  color: #bd93f9;
}

/* Responsive */
@media (max-width: 768px) {
  .hero h2 {
    font-size: 2.5rem;
  }
  .code-comparison {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1px 1fr;
  }
  .comparison-divider {
    height: 1px;
    width: 100%;
  }
  .editor-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 1fr 1fr;
  }
  .tests-layout {
    grid-template-columns: 1fr;
  }
  .sidebar {
    height: 200px;
  }
  .nav-link span {
    display: none;
  } /* hide text on small screens if needed */
}