/**
 * styles.css
 * Global styles cho TikTok Live Game SaaS Platform
 * 
 * Theme: Dark mode với gradient accents
 * Design: Modern, glassmorphism, micro-animations
 */

/* ==========================================
   CSS VARIABLES
   ========================================== */
:root {
  /* Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: rgba(25, 25, 35, 0.8);
  --bg-glass: rgba(255, 255, 255, 0.05);

  /* TikTok-inspired colors */
  --accent-pink: #fe2c55;
  --accent-cyan: #25f4ee;
  --accent-blue: #3b82f6;
  --accent-purple: #8b5cf6;

  /* Gradients */
  --gradient-primary: linear-gradient(
    135deg,
    var(--accent-pink),
    var(--accent-purple)
  );
  --gradient-secondary: linear-gradient(
    135deg,
    var(--accent-cyan),
    var(--accent-blue)
  );
  --gradient-bg: radial-gradient(ellipse at top, #1a1a2e 0%, #0a0a0f 100%);

  /* Text */
  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.4);

  /* Borders */
  --border-color: rgba(255, 255, 255, 0.1);
  --border-glow: rgba(254, 44, 85, 0.5);

  /* Spacing */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 40px rgba(254, 44, 85, 0.3);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    sans-serif;
  background: var(--gradient-bg);
  color: var(--text-primary);
  min-height: 100vh;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================
   ANIMATIONS
   ========================================== */
@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

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

@keyframes glow {
  0%,
  100% {
    box-shadow: 0 0 20px rgba(254, 44, 85, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(254, 44, 85, 0.6);
  }
}

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

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ==========================================
   LAYOUT
   ========================================== */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================
   HEADER
   ========================================== */
.header {
  padding: 20px 0;
  border-bottom: 1px solid var(--border-color);
  backdrop-filter: blur(10px);
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(10, 10, 15, 0.9);
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.nav-links {
  display: flex;
  gap: 20px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.nav-link:hover {
  color: var(--accent-pink);
}

/* ==========================================
   HERO SECTION
   ========================================== */
.hero {
  padding: 80px 0;
  text-align: center;
  animation: fadeIn 0.8s ease;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 20px;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.2rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* ==========================================
   GLASSMORPHISM CARD
   ========================================== */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 30px;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.glass-card:hover {
  border-color: rgba(254, 44, 85, 0.3);
  box-shadow: var(--shadow-glow);
}

/* ==========================================
   FORM ELEMENTS
   ========================================== */
.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  margin-bottom: 8px;
  font-weight: 600;
  color: var(--text-primary);
}

.form-input {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-input:focus {
  outline: none;
  border-color: var(--accent-pink);
  box-shadow: 0 0 0 4px rgba(254, 44, 85, 0.1);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-input:read-only {
  opacity: 0.8;
  cursor: default;
}

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(254, 44, 85, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(254, 44, 85, 0.5);
}

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

.btn-secondary {
  background: var(--bg-secondary);
  color: var(--text-primary);
  border: 2px solid var(--border-color);
}

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  background: rgba(37, 244, 238, 0.1);
}

.btn-copy {
  background: var(--gradient-secondary);
  color: var(--bg-primary);
}

.btn-copy:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 30px rgba(37, 244, 238, 0.5);
}

.btn-group {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* ==========================================
   GAME SELECTION CARDS
   ========================================== */
.game-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}

.game-card {
  background: var(--bg-card);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 24px;
  cursor: pointer;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.game-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--gradient-primary);
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.game-card:hover {
  transform: translateY(-4px);
  border-color: rgba(254, 44, 85, 0.4);
}

.game-card:hover::before {
  opacity: 1;
}

.game-card.selected {
  border-color: var(--accent-pink);
  box-shadow: 0 0 30px rgba(254, 44, 85, 0.3);
}

.game-card.selected::before {
  opacity: 1;
}

.game-card-icon {
  width: 60px;
  height: 60px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: 16px;
}

.game-card-title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.game-card-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

.game-card-badge {
  position: absolute;
  top: 16px;
  right: 16px;
  padding: 4px 12px;
  background: var(--accent-cyan);
  color: var(--bg-primary);
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: var(--radius-full);
}

/* ==========================================
   OUTPUT SECTION
   ========================================== */
.output-section {
  display: none;
  margin-top: 30px;
  padding-top: 30px;
  border-top: 1px solid var(--border-color);
  animation: fadeIn 0.5s ease;
}

.output-section.visible {
  display: block;
}

.output-label {
  font-weight: 600;
  margin-bottom: 12px;
  color: var(--accent-cyan);
}

.output-wrapper {
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.output-input {
  flex: 1;
  padding: 14px 18px;
  background: var(--bg-primary);
  border: 2px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  color: var(--accent-cyan);
  font-family: "Fira Code", monospace;
  font-size: 0.95rem;
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
  padding: 40px 0;
  text-align: center;
  color: var(--text-muted);
  border-top: 1px solid var(--border-color);
  margin-top: 80px;
}

/* ==========================================
   UTILITIES
   ========================================== */
.text-gradient {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.text-center {
  text-align: center;
}

.mt-4 {
  margin-top: 2rem;
}

.mb-4 {
  margin-bottom: 2rem;
}

/* Toast Notification */
.toast {
  position: fixed;
  bottom: 30px;
  right: 30px;
  padding: 16px 24px;
  background: var(--bg-card);
  border: 1px solid var(--accent-cyan);
  border-radius: var(--radius-md);
  color: var(--accent-cyan);
  font-weight: 500;
  box-shadow: var(--shadow-md);
  transform: translateY(100px);
  opacity: 0;
  transition: all var(--transition-normal);
  z-index: 1000;
}

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

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 768px) {
  .hero {
    padding: 40px 0;
  }

  .glass-card {
    padding: 20px;
  }

  .game-grid {
    grid-template-columns: 1fr;
  }

  .output-wrapper {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }
}

/* ==========================================
   ADDITIONS FOR LOGO, MODE SELECT & TARGET POINTS
   ========================================== */

/* Logo image */
.logo-img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

/* Mode Selector */
.mode-selector {
  width: 100%;
}

.form-select {
  width: 100%;
  padding: 14px 18px;
  background: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 1rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' 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 18px center;
}

.form-select:focus {
  outline: none;
  border-color: var(--accent-pink);
  box-shadow: 0 0 0 4px rgba(254, 44, 85, 0.1);
}

/* Target Points Input */
input[type="number"].form-input {
  -moz-appearance: textfield;
}

input[type="number"].form-input::-webkit-inner-spin-button,
input[type="number"].form-input::-webkit-outer-spin-button {
  opacity: 0.5;
  margin-left: 8px;
}

/* Responsive for new elements */
@media (max-width: 768px) {
  .logo-img {
    width: 32px;
    height: 32px;
  }
  
  .form-select {
    padding: 12px 16px;
  }
}