/**
 * GatewaySentry - Security Challenge Styles
 * Matches dashboard design system
 * Version: 3.0.0
 */

/* ============================================
   CSS VARIABLES
   ============================================ */
:root {
  /* Colors - Dark Theme */
  --color-bg-base: #0a0a0c;
  --color-bg-elevated: #121216;
  --color-bg-overlay: #1a1a1f;
  --color-bg-subtle: rgba(255, 255, 255, 0.02);
  
  /* Text */
  --color-text-primary: rgba(255, 255, 255, 0.95);
  --color-text-secondary: rgba(255, 255, 255, 0.6);
  --color-text-muted: rgba(255, 255, 255, 0.4);
  
  /* Accent */
  --color-accent: #FF9B28;
  --color-accent-strong: #FFB054;
  --color-accent-muted: rgba(255, 155, 40, 0.4);
  --color-accent-subtle: rgba(255, 155, 40, 0.12);
  
  /* Status */
  --color-success: #34D399;
  --color-success-subtle: rgba(52, 211, 153, 0.12);
  --color-danger: #F87171;
  --color-danger-subtle: rgba(248, 113, 113, 0.12);
  --color-warning: #FBBF24;
  --color-info: #60A5FA;
  
  /* Borders */
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-subtle: rgba(255, 255, 255, 0.04);
  --color-border-strong: rgba(255, 255, 255, 0.12);
  
  /* Glass */
  --glass-bg: rgba(18, 18, 22, 0.8);
  --glass-bg-strong: rgba(26, 26, 31, 0.9);
  --glass-blur: blur(20px) saturate(180%);
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 40px rgba(255, 155, 40, 0.15);
  
  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Space Grotesk', var(--font-sans);
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  
  /* Radii */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 20px;
  --radius-full: 9999px;
  
  /* Transitions */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --duration-slow: 400ms;
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

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

/* ============================================
   BASE STYLES
   ============================================ */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background: var(--color-bg-base);
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Background gradient orbs */
body::before,
body::after {
  content: '';
  position: fixed;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.4;
  pointer-events: none;
  z-index: -1;
}

body::before {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(255, 155, 40, 0.15) 0%, transparent 70%);
  top: -200px;
  right: -100px;
}

body::after {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(96, 165, 250, 0.1) 0%, transparent 70%);
  bottom: -150px;
  left: -100px;
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
  width: 100%;
  max-width: 440px;
  animation: fadeIn var(--duration-slow) var(--ease-out);
}

/* ============================================
   HEADER
   ============================================ */
.header {
  text-align: center;
  margin-bottom: var(--space-6);
}

h1 {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  color: var(--color-text-primary);
  letter-spacing: -0.02em;
  margin-bottom: var(--space-2);
}

.subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  font-weight: var(--font-normal);
}

/* ============================================
   CARD
   ============================================ */
.card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-bottom: var(--space-5);
  box-shadow: 
    var(--shadow-lg),
    0 0 0 1px rgba(255, 255, 255, 0.03) inset,
    var(--shadow-glow);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

/* ============================================
   VERIFICATION CONTENT (POW Challenge)
   ============================================ */
.verification-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
  padding: var(--space-4) 0;
}

.spinner-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--color-border-strong);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ============================================
   BRAND ELEMENTS
   ============================================ */
.brand-badge {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: 
    border-color var(--duration-fast) var(--ease-default),
    background var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default);
}

.brand-badge:hover {
  border-color: var(--color-accent-muted);
  background: var(--color-accent-subtle);
  color: var(--color-text-primary);
}

.brand-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent-muted);
}

.brand-pill {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-bg-elevated);
  font-size: var(--text-xs);
  font-weight: var(--font-medium);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: 
    border-color var(--duration-fast) var(--ease-default),
    background var(--duration-fast) var(--ease-default),
    color var(--duration-fast) var(--ease-default);
}

.brand-pill:hover {
  border-color: var(--color-accent-muted);
  background: var(--color-accent-subtle);
  color: var(--color-text-primary);
}

.brand-pill .brand-dot {
  width: 6px;
  height: 6px;
}

/* ============================================
   STATUS TEXT
   ============================================ */
.status-text {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  text-align: center;
}

.progress-text {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-align: center;
  font-variant-numeric: tabular-nums;
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  text-align: center;
  padding: var(--space-4) 0;
}

.footer-text {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-weight: var(--font-medium);
}

.brand {
  color: var(--color-accent);
  font-weight: var(--font-semibold);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-default);
}

.brand:hover {
  color: var(--color-accent-strong);
}

/* ============================================
   CAPTCHA CHECKBOX CARD
   ============================================ */
.checkbox-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-4) var(--space-5);
  transition: border-color var(--duration-fast) var(--ease-default);
}

.checkbox-card:has(.gs-check:checked) {
  border-color: var(--color-accent-muted);
}

.check-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.check-text {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.check-label {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
}

.check-hint {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* Custom checkbox */
.gs-check {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border-strong);
  border-radius: var(--radius-sm);
  background: var(--color-bg-base);
  appearance: none;
  -webkit-appearance: none;
  cursor: pointer;
  position: relative;
  transition: 
    background var(--duration-fast) var(--ease-default),
    border-color var(--duration-fast) var(--ease-default),
    transform var(--duration-fast) var(--ease-out);
}

.gs-check:hover {
  border-color: var(--color-accent-muted);
}

.gs-check:checked {
  background: var(--color-accent);
  border-color: var(--color-accent);
  animation: checkPop 0.25s var(--ease-out);
}

.gs-check:focus {
  outline: none;
  box-shadow: 0 0 0 3px var(--color-accent-subtle);
}

@keyframes checkPop {
  0% { transform: scale(0.9); }
  50% { transform: scale(1.1); }
  100% { transform: scale(1); }
}

/* ============================================
   STATUS BLOCK
   ============================================ */
.status-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  align-items: center;
  text-align: center;
  padding: var(--space-3) 0;
  transition: 
    opacity var(--duration-normal) var(--ease-default),
    transform var(--duration-normal) var(--ease-default);
}

.status-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  justify-content: center;
}

.status-spinner {
  width: 18px;
  height: 18px;
  border: 2px solid var(--color-border-strong);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* ============================================
   PUZZLE SECTION
   ============================================ */
.puzzle {
  padding: var(--space-5);
  border: 1px dashed var(--color-border-strong);
  border-radius: var(--radius-lg);
  background: var(--color-bg-subtle);
  display: none;
  opacity: 0;
  transform: translateY(8px);
  transition: 
    opacity var(--duration-normal) var(--ease-out),
    transform var(--duration-normal) var(--ease-out);
}

.puzzle.showing {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.puzzle.closing {
  opacity: 0;
  transform: translateY(12px) scale(0.98);
}

.puzzle-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--color-text-primary);
  text-align: center;
  margin-bottom: var(--space-1);
}

#puzzle-instruction {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  text-align: center;
  margin-bottom: var(--space-4);
}

.puzzle-grid {
  display: flex;
  gap: var(--space-3);
  justify-content: center;
  flex-wrap: wrap;
}

.puzzle-actions {
  margin-top: var(--space-4);
  display: flex;
  gap: var(--space-3);
  justify-content: center;
}

/* Shape cards */
.shape {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  background: var(--color-bg-elevated);
  border: 2px solid var(--color-border);
  transition: 
    transform var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-default),
    box-shadow var(--duration-fast) var(--ease-default);
}

.shape:hover {
  transform: translateY(-3px) scale(1.02);
  border-color: var(--color-accent-muted);
  box-shadow: var(--shadow-md), 0 0 20px var(--color-accent-subtle);
}

.shape:active {
  transform: translateY(-1px) scale(0.98);
}

.shape-inner {
  border-radius: var(--radius-md);
  background: var(--color-accent);
  transform-origin: center;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-5);
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  cursor: pointer;
  transition: 
    background var(--duration-fast) var(--ease-default),
    border-color var(--duration-fast) var(--ease-default),
    transform var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-default);
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, #E88A20 100%);
  color: #1a1a1f;
  box-shadow: 0 2px 8px rgba(255, 155, 40, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, var(--color-accent-strong) 0%, var(--color-accent) 100%);
  box-shadow: 0 4px 16px rgba(255, 155, 40, 0.4);
}

.btn-primary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

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

.btn-secondary:hover {
  background: var(--color-bg-overlay);
  border-color: var(--color-border-strong);
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.hidden {
  display: none !important;
}

/* ============================================
   ANIMATIONS
   ============================================ */
@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ============================================
   MOBILE RESPONSIVENESS
   ============================================ */
@media (max-width: 520px) {
  body {
    padding: var(--space-4);
    align-items: flex-start;
    padding-top: var(--space-10);
  }
  
  .container {
    max-width: 100%;
  }
  
  h1 {
    font-size: var(--text-xl);
  }
  
  .card {
    padding: var(--space-5);
    border-radius: var(--radius-lg);
  }
  
  .checkbox-card {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
  }
  
  .brand-pill {
    align-self: flex-start;
  }
  
  .spinner-wrapper {
    width: 64px;
    height: 64px;
  }
  
  .spinner {
    width: 32px;
    height: 32px;
  }
  
  .shape {
    width: 76px;
    height: 76px;
  }
  
  .puzzle {
    padding: var(--space-4);
  }
  
  .puzzle-grid {
    gap: var(--space-2);
  }
}

@media (max-width: 380px) {
  .shape {
    width: 68px;
    height: 68px;
  }
  
  .puzzle-grid {
    gap: var(--space-2);
  }
}

/* ============================================
   REDUCED MOTION
   ============================================ */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  .spinner {
    animation: none;
    border-top-color: var(--color-accent);
    opacity: 0.7;
  }
  
  .status-spinner {
    animation: none;
    opacity: 0.7;
  }
}

/* ============================================
   HIGH CONTRAST MODE
   ============================================ */
@media (prefers-contrast: high) {
  :root {
    --color-border: rgba(255, 255, 255, 0.2);
    --color-border-strong: rgba(255, 255, 255, 0.3);
    --color-text-secondary: rgba(255, 255, 255, 0.8);
    --color-text-muted: rgba(255, 255, 255, 0.6);
  }
}