/* Global theme palette */
:root {
  --color-bg: #0a0a0c;
  --color-bg-gradient: linear-gradient(135deg, #0a0a0c 0%, #12121a 50%, #0a0a0c 100%);
  --color-text: #e0e0e0;
  --color-text-muted: #888;
  --color-accent: #FFD700;
  --color-accent-hover: #FFA500;
  --color-accent-glow: rgba(255, 215, 0, 0.15);
  --color-surface: #151518;
  --color-surface-hover: #1a1a1f;
  --color-surface-glass: rgba(21, 21, 24, 0.85);
  --color-border: #2a2a30;
  --color-border-glow: rgba(255, 215, 0, 0.2);
  --color-red: #e50914;
  --color-red-glow: rgba(229, 9, 20, 0.2);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px var(--color-accent-glow);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --transition-fast: 0.15s ease;
  --transition-normal: 0.25s ease;
  --transition-slow: 0.4s ease;
}

/* Base layout */
*,
*::before,
*::after {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--color-bg);
  background-image: 
    radial-gradient(ellipse at top, rgba(255, 215, 0, 0.03) 0%, transparent 50%),
    radial-gradient(ellipse at bottom right, rgba(229, 9, 20, 0.02) 0%, transparent 50%);
  background-attachment: fixed;
  color: var(--color-text);
  font-family: 'Oswald', "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: color var(--transition-fast), text-decoration-color var(--transition-fast);
  position: relative;
}

a:hover,
a:focus-visible {
  color: var(--color-accent-hover);
  text-decoration: none;
}

/* Interactive link underline effect */
a.link-underline::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  transition: width var(--transition-normal);
}

a.link-underline:hover::after {
  width: 100%;
}

/* Buttons */
button,
input[type="button"],
input[type="submit"],
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.25rem;
  border: none;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: #0a0a0b;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.5px;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-normal);
  box-shadow: var(--shadow-sm), 0 0 0 rgba(255, 215, 0, 0);
}

button::before,
input[type="button"]::before,
input[type="submit"]::before,
.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s ease;
}

button:hover,
button:focus-visible,
input[type="button"]:hover,
input[type="button"]:focus-visible,
input[type="submit"]:hover,
input[type="submit"]:focus-visible,
.btn:hover,
.btn:focus-visible {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--shadow-glow);
}

button:hover::before,
.btn:hover::before {
  left: 100%;
}

button:active,
input[type="button"]:active,
input[type="submit"]:active,
.btn:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

button:disabled,
input[type="button"]:disabled,
input[type="submit"]:disabled,
.btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
  transform: none;
  box-shadow: none;
}

/* Secondary/Outline Button */
.btn-secondary,
.btn-outline {
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
}

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

/* Ghost Button */
.btn-ghost {
  background: transparent;
  border: none;
  color: var(--color-text-muted);
  padding: 0.5rem 0.75rem;
}

.btn-ghost:hover {
  background: var(--color-surface);
  color: var(--color-accent);
}

/* Form elements */
input,
textarea,
select {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-surface);
  color: var(--color-text);
  font-size: 14px;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), background-color var(--transition-fast);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

input:hover,
textarea:hover,
select:hover {
  border-color: #3a3a40;
  background-color: var(--color-surface-hover);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px var(--color-accent-glow), var(--shadow-sm);
  background-color: var(--color-surface-hover);
}

/* Utility surfaces */
.card,
.panel,
.surface {
  padding: 1.25rem;
  border-radius: 0.5rem;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
}

.divider {
  height: 1px;
  width: 100%;
  background-color: var(--color-border);
  margin: 1.25rem 0;
}

/* Text helpers */
.muted {
  color: rgba(200, 200, 200, 0.7);
}