/* ================================================
   CSS Reset & Foundation
   ================================================
   Core styles that apply to all pages:
   - CSS Reset
   - Typography base
   - Main layout
   - Utility classes
   ================================================ */

/* Import Google Font */
@import url("https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap");

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

html,
body,
div,
span,
h1,
h2,
h3,
h4,
h5,
h6,
p,
img,
a,
button,
input,
textarea,
select {
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-family, "Inter", "Segoe UI", "Arial", sans-serif);
  font-size: 16px;
  line-height: var(--line-height-normal, 1.5);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family, "Inter", "Segoe UI", "Arial", sans-serif);
  background: var(--color-gray-50, #f8fafc);
  color: var(--color-gray-800, #1e293b);
  line-height: var(--line-height-relaxed, 1.75);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* ================================================
   Typography Base
   ================================================ */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-weight: var(--font-weight-bold, 700);
  line-height: var(--line-height-tight, 1.25);
  color: var(--color-gray-800, #1e293b);
}

h1 {
  font-size: var(--font-size-3xl, 1.875rem);
}
h2 {
  font-size: var(--font-size-2xl, 1.5rem);
}
h3 {
  font-size: var(--font-size-xl, 1.25rem);
}
h4 {
  font-size: var(--font-size-lg, 1.125rem);
}
h5 {
  font-size: var(--font-size-base, 1rem);
}
h6 {
  font-size: var(--font-size-sm, 0.875rem);
}

p {
  margin-bottom: var(--spacing-4, 1rem);
}

a {
  color: var(--color-primary, #0066cc);
  text-decoration: none;
  transition: color var(--transition-fast, 0.15s ease);
}

a:hover {
  color: var(--color-primary-dark, #004999);
  text-decoration: none;
}
li {
  list-style: none;
}
/* ================================================
   Main Content Area
   ================================================ */
main {
  flex: 1 0 auto;
  width: 100%;
}

main:not(.home-page) {
  padding: 30px 20px;
  max-width: var(--container-2xl, 1400px);
  margin: 0 auto;
}

main.home-page {
  padding: 0;
  max-width: none;
}

@media (min-width: 768px) {
  main:not(.home-page) {
    padding: 40px 30px;
  }
}

@media (min-width: 1024px) {
  main:not(.home-page) {
    padding: 50px 40px;
  }
}

/* ================================================
   Container Styles
   ================================================ */
.container {
  background-color: var(--color-white, #fff);
  border-radius: var(--radius-lg, 12px);
  padding: 30px;
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
  margin-bottom: 20px;
}

.container h1 {
  color: var(--color-primary, #0066cc);
  margin-bottom: 20px;
  font-size: 2rem;
  text-align: center;
}

.container h2 {
  color: var(--color-primary-dark, #004999);
  margin-top: 20px;
  margin-bottom: 15px;
  font-size: 1.5rem;
}

.container h3 {
  color: var(--color-primary, #0066cc);
  margin-top: 15px;
  margin-bottom: 10px;
  font-size: 1.2rem;
}

/* Page Container */
.page-container {
  max-width: var(--container-xl, 1280px);
  margin: 0 auto;
}

.page-header {
  text-align: center;
  margin-bottom: var(--spacing-8, 2rem);
}

.page-header h1 {
  color: var(--color-gray-800, #1e293b);
  margin-bottom: var(--spacing-2, 0.5rem);
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-3, 0.75rem);
}

.page-header h1 i {
  color: var(--color-primary, #0066cc);
}

.page-header .subtitle {
  color: var(--color-gray-500, #64748b);
  font-size: var(--font-size-base, 1rem);
}

/* Center Utilities */
.center-case {
  width: 95%;
  max-width: 800px;
  margin: 20px auto;
  padding: 20px;
}

.center-box {
  background-color: var(--color-white, #fff);
  box-shadow: var(--shadow-md, 0 4px 6px rgba(0, 0, 0, 0.1));
  border-radius: var(--radius-lg, 12px);
  width: 100%;
  max-width: 350px;
  margin: 20px auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
  border: 2px solid var(--color-gray-200, #e2e8f0);
}

.center-box div {
  text-align: center;
  width: 90%;
}

.super-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  padding: 20px;
  margin: 0;
}

/* ================================================
   Grid System
   ================================================ */
.grid {
  display: grid;
  gap: 20px;
  margin-bottom: 20px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

/* ================================================
   Utility Classes - Text
   ================================================ */
.text-center {
  text-align: center;
}
.text-right {
  text-align: right;
}
.text-left {
  text-align: left;
}

.text-primary {
  color: var(--color-primary, #0066cc);
}
.text-success {
  color: var(--color-success, #28a745);
}
.text-warning {
  color: var(--color-warning, #ffc107);
}
.text-danger {
  color: var(--color-danger, #dc3545);
}
.text-muted {
  color: var(--color-gray-500, #64748b);
}

.font-bold {
  font-weight: var(--font-weight-bold, 700);
}
.font-semibold {
  font-weight: var(--font-weight-semibold, 600);
}
.font-medium {
  font-weight: var(--font-weight-medium, 500);
}
.font-normal {
  font-weight: var(--font-weight-normal, 400);
}

/* ================================================
   Utility Classes - Spacing
   ================================================ */
.mt-0 {
  margin-top: 0;
}
.mt-10 {
  margin-top: 10px;
}
.mt-20 {
  margin-top: 20px;
}
.mt-30 {
  margin-top: 30px;
}

.mb-0 {
  margin-bottom: 0;
}
.mb-10 {
  margin-bottom: 10px;
}
.mb-20 {
  margin-bottom: 20px;
}
.mb-30 {
  margin-bottom: 30px;
}

.ml-auto {
  margin-left: auto;
}
.mr-auto {
  margin-right: auto;
}
.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.p-0 {
  padding: 0;
}
.p-10 {
  padding: 10px;
}
.p-20 {
  padding: 20px;
}
.p-30 {
  padding: 30px;
}

/* ================================================
   Utility Classes - Display & Flex
   ================================================ */
.hidden {
  display: none;
}
.block {
  display: block;
}
.inline {
  display: inline;
}
.inline-block {
  display: inline-block;
}

.flex {
  display: flex;
  gap: 10px;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

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

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

.flex-start {
  display: flex;
  justify-content: flex-start;
  align-items: center;
}

.flex-end {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.items-center {
  align-items: center;
}
.items-start {
  align-items: flex-start;
}
.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}
.justify-between {
  justify-content: space-between;
}
.justify-end {
  justify-content: flex-end;
}

.gap-1 {
  gap: var(--spacing-1, 0.25rem);
}
.gap-2 {
  gap: var(--spacing-2, 0.5rem);
}
.gap-3 {
  gap: var(--spacing-3, 0.75rem);
}
.gap-4 {
  gap: var(--spacing-4, 1rem);
}
.gap-5 {
  gap: var(--spacing-5, 1.25rem);
}

/* ================================================
   Utility Classes - Sizing
   ================================================ */
.w-full {
  width: 100%;
}
.w-auto {
  width: auto;
}
.h-full {
  height: 100%;
}
.h-auto {
  height: auto;
}

.max-w-sm {
  max-width: var(--container-sm, 640px);
}
.max-w-md {
  max-width: var(--container-md, 768px);
}
.max-w-lg {
  max-width: var(--container-lg, 1024px);
}
.max-w-xl {
  max-width: var(--container-xl, 1280px);
}

/* ================================================
   Utility Classes - Borders & Shadows
   ================================================ */
.rounded {
  border-radius: var(--radius-md, 8px);
}
.rounded-lg {
  border-radius: var(--radius-lg, 12px);
}
.rounded-xl {
  border-radius: var(--radius-xl, 16px);
}
.rounded-full {
  border-radius: var(--radius-full, 9999px);
}

.shadow {
  box-shadow: var(--shadow-md, 0 4px 6px rgba(0, 0, 0, 0.1));
}
.shadow-sm {
  box-shadow: var(--shadow-sm, 0 1px 3px rgba(0, 0, 0, 0.1));
}
.shadow-lg {
  box-shadow: var(--shadow-lg, 0 10px 15px rgba(0, 0, 0, 0.1));
}
.shadow-none {
  box-shadow: none;
}

/* ================================================
   Utility Classes - Overflow
   ================================================ */
.overflow-hidden {
  overflow: hidden;
}
.overflow-auto {
  overflow: auto;
}
.overflow-x-auto {
  overflow-x: auto;
}
.overflow-y-auto {
  overflow-y: auto;
}

/* ================================================
   Utility Classes - Position
   ================================================ */
.relative {
  position: relative;
}
.absolute {
  position: absolute;
}
.fixed {
  position: fixed;
}
.sticky {
  position: sticky;
}

/* ================================================
   Utility Classes - Cursor
   ================================================ */
.cursor-pointer {
  cursor: pointer;
}
.cursor-not-allowed {
  cursor: not-allowed;
}

/* ================================================
   Utility Classes - Transitions
   ================================================ */
.transition {
  transition: all var(--transition-base, 0.2s ease);
}

.transition-fast {
  transition: all var(--transition-fast, 0.15s ease);
}

.transition-slow {
  transition: all var(--transition-slow, 0.3s ease);
}

/* ================================================
   Responsive Visibility
   ================================================ */
@media (max-width: 640px) {
  .hide-mobile {
    display: none !important;
  }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .hide-tablet {
    display: none !important;
  }
}

@media (min-width: 1025px) {
  .hide-desktop {
    display: none !important;
  }
}

@media (max-width: 1024px) {
  .show-desktop-only {
    display: none !important;
  }
}

@media (min-width: 641px) {
  .show-mobile-only {
    display: none !important;
  }
}