@import url('https://fonts.googleapis.com/css2?family=Nunito:wght@400;600;700;800&display=swap');

:root {
  --color-primary: #4C97FF;
  --color-primary-dark: #3373CC;
  --color-secondary: #FF6680;
  --color-accent: #FFD500;
  --color-success: #40BF4A;
  --color-warning: #FFAB19;
  --color-error: #FF4C4C;
  --color-purple: #9966FF;

  --color-bg: #F0F4FF;
  --color-surface: #FFFFFF;
  --color-text: #2E3440;
  --color-text-light: #6B7280;
  --color-text-muted: #9CA3AF;
  --color-border: #E5E7EB;
  --color-border-light: #F3F4F6;

  --cat-motion: #4C97FF;
  --cat-control: #FFAB19;
  --cat-events: #FFD500;
  --cat-looks: #9966FF;
  --cat-operators: #40BF4A;

  --font-family: 'Nunito', 'Segoe UI', system-ui, sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.85rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.15rem;
  --font-size-xl: 1.35rem;
  --font-size-2xl: 1.75rem;
  --font-size-3xl: 2.25rem;

  --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;

  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 20px rgba(76, 151, 255, 0.3);

  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-bounce: 400ms cubic-bezier(0.34, 1.56, 0.64, 1);
}

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

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.5;
}

a {
  text-decoration: none;
  color: inherit;
}

img {
  max-width: 100%;
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast);
  user-select: none;
  white-space: nowrap;
}

.btn:hover {
  transform: scale(1.05);
}

.btn:active {
  transform: scale(0.97);
}

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

.btn-primary {
  background: var(--color-primary);
  color: white;
  box-shadow: 0 3px 10px rgba(76, 151, 255, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: 0 4px 14px rgba(76, 151, 255, 0.4);
}

.btn-success {
  background: var(--color-success);
  color: white;
  box-shadow: 0 3px 10px rgba(64, 191, 74, 0.3);
}

.btn-warning {
  background: var(--color-warning);
  color: white;
  box-shadow: 0 3px 10px rgba(255, 171, 25, 0.3);
}

.btn-danger {
  background: var(--color-error);
  color: white;
  box-shadow: 0 3px 10px rgba(255, 76, 76, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn-outline:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-sm {
  padding: 8px 16px;
  font-size: var(--font-size-sm);
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 16px 32px;
  font-size: var(--font-size-lg);
  border-radius: var(--radius-lg);
}

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  border-radius: var(--radius-sm);
  font-size: 1.2rem;
}

/* ===== HEADER ===== */
.header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-8);
  height: 56px;
  background: white;
  border-bottom: 3px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-logo {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text);
}

.header-logo span {
  color: var(--color-primary);
}

.header-nav {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.header-nav a,
.header-nav button {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-text-light);
  transition: all var(--transition-fast);
  border: none;
  background: none;
  cursor: pointer;
  font-family: var(--font-family);
}

.header-nav a:hover,
.header-nav button:hover {
  background: var(--color-bg);
  color: var(--color-primary);
}

.header-nav a.active {
  background: var(--color-primary);
  color: white;
}

/* ===== CARD ===== */
.card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

/* ===== MODAL ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  animation: fadeIn 0.2s ease;
  backdrop-filter: blur(4px);
}

.modal {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-10);
  max-width: 440px;
  width: 90%;
  text-align: center;
  animation: slideUp 0.3s var(--transition-bounce);
  box-shadow: var(--shadow-lg);
}

.modal h2 {
  margin-bottom: var(--space-4);
}

.modal p {
  color: var(--color-text-light);
  margin-bottom: var(--space-6);
}

/* ===== BADGE ===== */
.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: 700;
}

.badge-primary {
  background: rgba(76, 151, 255, 0.15);
  color: var(--color-primary);
}

.badge-success {
  background: rgba(64, 191, 74, 0.15);
  color: var(--color-success);
}

.badge-warning {
  background: rgba(255, 171, 25, 0.15);
  color: var(--color-warning);
}

/* ===== PROGRESS BAR ===== */
.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--color-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  border-radius: var(--radius-full);
  transition: width 0.5s ease;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from { opacity: 0; transform: translateY(20px) scale(0.95); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes bounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  20%, 60% { transform: translateX(-6px); }
  40%, 80% { transform: translateX(6px); }
}

@keyframes confettiFall {
  0% { transform: translateY(-10px) rotate(0deg); opacity: 1; }
  100% { transform: translateY(100vh) rotate(720deg); opacity: 0; }
}

.animate-fadeIn { animation: fadeIn 0.4s ease; }
.animate-slideUp { animation: slideUp 0.4s ease; }
.animate-bounce { animation: bounce 2s ease infinite; }

/* ===== TOOLTIP ===== */
.tooltip {
  position: relative;
}

.tooltip::after {
  content: attr(data-tooltip);
  position: absolute;
  bottom: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) scale(0.9);
  background: var(--color-text);
  color: white;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: var(--font-size-xs);
  font-weight: 600;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: all var(--transition-fast);
}

.tooltip:hover::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .header {
    padding: 0 var(--space-4);
  }
}

@media (max-width: 640px) {
  .header {
    padding: 0 var(--space-3);
    height: 48px;
  }

  .header-logo {
    font-size: var(--font-size-lg);
  }

  .header-nav a,
  .header-nav button {
    padding: 6px 10px;
    font-size: var(--font-size-xs);
  }

  .btn {
    padding: 10px 18px;
    font-size: var(--font-size-sm);
  }

  .btn-lg {
    padding: 12px 24px;
    font-size: var(--font-size-base);
  }

  .modal {
    padding: var(--space-6);
    max-width: 95%;
  }
}