/* GM Code Lab — Public Design System & Utilities */

:root {
  --color-primary: #0F172A;
  --color-primary-light: #1E293B;
  --color-accent: #2563EB;
  --color-accent-hover: #1D4ED8;
  --color-accent-subtle: #EFF6FF;
  --color-bg-light: #F8FAFC;
  --color-card-bg: #FFFFFF;
  --color-text-main: #0F172A;
  --color-text-muted: #475569;
  --color-border: #E2E8F0;
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg-light);
  color: var(--color-text-main);
  margin: 0;
  padding: 0;
  overflow-x: hidden;
  line-height: 1.6;
}

svg {
  display: inline-block;
  vertical-align: middle;
  max-width: 100%;
  height: auto;
}

.container-custom {
  width: 100%;
  max-width: 80rem; /* 1280px */
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
}

@media (min-width: 640px) {
  .container-custom {
    padding-left: 1.5rem;
    padding-right: 1.5rem;
  }
}

@media (min-width: 1024px) {
  .container-custom {
    padding-left: 2rem;
    padding-right: 2rem;
  }
}

/* Typography Hierarchy */
h1, .h1 {
  font-size: 2.25rem;
  line-height: 1.2;
  font-weight: 800;
  letter-spacing: -0.025em;
  color: var(--color-primary);
  margin-top: 0;
}

@media (min-width: 768px) {
  h1, .h1 {
    font-size: 3rem;
  }
}

@media (min-width: 1024px) {
  h1, .h1 {
    font-size: 3.5rem;
  }
}

h2, .h2 {
  font-size: 1.75rem;
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  margin-top: 0;
}

@media (min-width: 768px) {
  h2, .h2 {
    font-size: 2.25rem;
  }
}

h3, .h3 {
  font-size: 1.25rem;
  line-height: 1.35;
  font-weight: 600;
  color: var(--color-primary);
  margin-top: 0;
}

@media (min-width: 768px) {
  h3, .h3 {
    font-size: 1.4rem;
  }
}

.text-lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
}

@media (min-width: 768px) {
  .text-lead {
    font-size: 1.25rem;
  }
}

/* Button System */
.btn-base {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: 0.5rem;
  padding: 0.75rem 1.5rem;
  transition: all 0.2s ease-in-out;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
}

.btn-primary {
  background-color: var(--color-accent);
  color: #FFFFFF !important;
  box-shadow: 0 4px 14px 0 rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  box-shadow: 0 6px 20px 0 rgba(37, 99, 235, 0.35);
  transform: translateY(-1px);
}

.btn-secondary {
  background-color: var(--color-primary);
  color: #FFFFFF !important;
}

.btn-secondary:hover {
  background-color: var(--color-primary-light);
  transform: translateY(-1px);
}

.btn-outline {
  background-color: transparent;
  color: var(--color-primary) !important;
  border-color: var(--color-border);
}

.btn-outline:hover {
  background-color: #F1F5F9;
  border-color: #CBD5E1;
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
}

/* Card System */
.card-public {
  background-color: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  padding: 1.75rem;
  transition: all 0.25s ease-in-out;
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card-public:hover {
  border-color: #CBD5E1;
  box-shadow: 0 10px 25px -5px rgba(15, 23, 42, 0.08);
  transform: translateY(-3px);
}

/* Badge System */
.badge-public {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background-color: var(--color-accent-subtle);
  color: var(--color-accent);
}

/* Common Layout Utilities */
.hidden { display: none !important; }
.block { display: block !important; }
.flex { display: flex !important; }
.grid { display: grid !important; }
.items-center { align-items: center !important; }
.justify-between { justify-content: space-between !important; }
.justify-center { justify-content: center !important; }

@media (min-width: 768px) {
  .md\:flex { display: flex !important; }
  .md\:hidden { display: none !important; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, minmax(0, 1fr)) !important; }
  .md\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .md\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
}

@media (min-width: 1024px) {
  .lg\:flex { display: flex !important; }
  .lg\:hidden { display: none !important; }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, minmax(0, 1fr)) !important; }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, minmax(0, 1fr)) !important; }
  .lg\:grid-cols-5 { grid-template-columns: repeat(5, minmax(0, 1fr)) !important; }
}