/* Tailwind CSS Reset & Base */
*, ::before, ::after {
  box-sizing: border-box;
  border-width: 0;
  border-style: solid;
  border-color: #e5e7eb;
}

html, body {
  height: 100%;
  margin: 0;
  padding: 0;
  font-family: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Custom Gradient Background */
body {
  background: linear-gradient(to bottom, #f0f4f8 0%, #d9e2ec 100%);
  min-height: 100vh;
}

.gradient-bg {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Responsive horizontal cards */
@media (max-width: 768px) {
  .card .flex {
    flex-wrap: wrap;
    gap: 0.5rem;
  }
}

/* Tab System */
.tab-btn {
  cursor: pointer;
  transition: all 0.2s ease;
}

.tab-btn:hover {
  background-color: #f3f4f6;
}

.tab-btn.active {
  color: #9333ea;
  border-bottom: 2px solid #9333ea;
}

.tab-content {
  animation: fadeIn 0.3s ease;
}

.tab-content.hidden {
  display: none;
}

/* Clickable elements */
.cursor-pointer {
  cursor: pointer;
}

/* Text decorations */
.line-through {
  text-decoration: line-through;
}

.opacity-50 {
  opacity: 0.5;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Tailwind Utilities - Essential Only */
.container { max-width: 1280px; margin: 0 auto; padding: 0 1rem; }
.mx-auto { margin-left: auto; margin-right: auto; }
.px-6 { padding-left: 1.5rem; padding-right: 1.5rem; }
.py-12 { padding-top: 3rem; padding-bottom: 3rem; }
.py-4 { padding-top: 1rem; padding-bottom: 1rem; }
.py-8 { padding-top: 2rem; padding-bottom: 2rem; }
.px-8 { padding-left: 2rem; padding-right: 2rem; }
.p-8 { padding: 2rem; }
.p-10 { padding: 2.5rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-8 { margin-bottom: 2rem; }
.mb-10 { margin-bottom: 2.5rem; }
.mt-4 { margin-top: 1rem; }
.mt-8 { margin-top: 2rem; }
.gap-4 { gap: 1rem; }
.gap-6 { gap: 1.5rem; }
.gap-8 { gap: 2rem; }

.flex { display: flex; }
.grid { display: grid; }
.hidden { display: none; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.text-center { text-align: center; }

.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }
.text-4xl { font-size: 2.25rem; }
.text-5xl { font-size: 3rem; }
.text-6xl { font-size: 3.75rem; }
.text-7xl { font-size: 4.5rem; }
.text-lg { font-size: 1.125rem; }

.font-black { font-weight: 900; }
.font-bold { font-weight: 700; }
.font-semibold { font-weight: 600; }
.font-medium { font-weight: 500; }

.text-white { color: #ffffff; }
.text-gray-500 { color: #6b7280; }
.text-gray-700 { color: #374151; }
.text-gray-800 { color: #1f2937; }
.text-success { color: #10b981; }
.text-error { color: #ef4444; }
.text-green-600 { color: #16a34a; }
.text-red-600 { color: #dc2626; }
.text-purple-600 { color: #9333ea; }
.text-purple-700 { color: #7e22ce; }

.bg-white { background-color: #ffffff; }
.bg-gray-200 { background-color: #e5e7eb; }

.shadow-xl { box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1); }
.shadow-2xl { box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25); }
.shadow-lg { box-shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1); }

.rounded-box { border-radius: 1rem; }
.rounded-xl { border-radius: 0.75rem; }

.w-full { width: 100%; }
.w-11\/12 { width: 91.666667%; }
.max-w-7xl { max-width: 80rem; }
.max-w-6xl { max-width: 72rem; }
.max-w-5xl { max-width: 64rem; }
.max-w-2xl { max-width: 42rem; }
.min-h-screen { min-height: 100vh; }

.space-y-4 > * + * { margin-top: 1rem; }
.space-y-6 > * + * { margin-top: 1.5rem; }

.overflow-x-auto { overflow-x: auto; }

.transition-all { transition-property: all; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }
.transition-transform { transition-property: transform; transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1); transition-duration: 150ms; }

.hover\:scale-105:hover { transform: scale(1.05); }
.hover\:-translate-y-2:hover { transform: translateY(-0.5rem); }
.hover\:shadow-3xl:hover { box-shadow: 0 35px 60px -15px rgb(0 0 0 / 0.3); }

.opacity-90 { opacity: 0.9; }

/* Grid Layout */
.grid-cols-1 { grid-template-columns: repeat(1, minmax(0, 1fr)); }
.grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }

@media (min-width: 768px) {
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* Gradient Backgrounds */
.bg-gradient-to-br { background-image: linear-gradient(to bottom right, var(--tw-gradient-stops)); }
.from-green-50 { --tw-gradient-from: #f0fdf4; --tw-gradient-to: rgb(240 253 244 / 0); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.to-green-100 { --tw-gradient-to: #dcfce7; }
.from-red-50 { --tw-gradient-from: #fef2f2; --tw-gradient-to: rgb(254 242 242 / 0); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.to-red-100 { --tw-gradient-to: #fee2e2; }
.from-blue-50 { --tw-gradient-from: #eff6ff; --tw-gradient-to: rgb(239 246 255 / 0); --tw-gradient-stops: var(--tw-gradient-from), var(--tw-gradient-to); }
.to-purple-100 { --tw-gradient-to: #f3e8ff; }