/* ============================================
   RODEMNAMU.ORG — Design System & Base Styles
   ============================================ */

/* --- Custom Properties --- */
:root {
  --color-primary: #2c5f2e;
  --color-primary-light: #4a8c4d;
  --color-primary-dark: #1e4220;
  --color-accent: #c9a84c;
  --color-accent-light: #ddc477;
  --color-text: #1a1a1a;
  --color-text-light: #555;
  --color-bg: #fff;
  --color-bg-section: #f7f7f5;
  --color-border: #e0e0e0;
  --color-white: #fff;

  --font-base: 'Noto Sans KR', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-serif: 'Noto Serif KR', Georgia, serif;

  --line-height-base: 1.7;
  --line-height-heading: 1.3;

  --max-width: 1100px;
  --max-width-narrow: 800px;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
  --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);

  --transition-base: 0.2s ease;
  --transition-slow: 0.4s ease;

  --header-height: 72px;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 60px);
}

body {
  font-family: var(--font-base);
  font-size: 16px;
  line-height: var(--line-height-base);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

a:hover {
  color: var(--color-primary-light);
}

ul, ol {
  list-style: none;
}

button {
  font: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  line-height: var(--line-height-heading);
  font-weight: 700;
  color: var(--color-text);
}

h1 { font-size: 2.25rem; }
h2 { font-size: 1.75rem; }
h3 { font-size: 1.375rem; margin-top: var(--space-lg); margin-bottom: var(--space-sm); }
h4 { font-size: 1.125rem; margin-top: var(--space-md); margin-bottom: var(--space-xs); }

p + p {
  margin-top: var(--space-sm);
}

/* --- Images --- */
img {
  max-width: 100%;
  height: auto;
}

.img-fluid {
  display: block;
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

.map-img {
  display: block;
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* --- Layout Utilities --- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

.container--narrow {
  max-width: var(--max-width-narrow);
}

.section {
  padding: var(--space-xl) 0;
}

.section--alt {
  background: var(--color-bg-section);
}

.section__title {
  font-size: 1.75rem;
  text-align: center;
  margin-bottom: var(--space-lg);
  position: relative;
}

.section__title::after {
  content: '';
  display: block;
  width: 48px;
  height: 3px;
  background: var(--color-accent);
  margin: var(--space-sm) auto 0;
  border-radius: 2px;
}

.section__subtitle {
  text-align: center;
  color: var(--color-text-light);
  max-width: 600px;
  margin: calc(-1 * var(--space-md)) auto var(--space-lg);
}

/* --- Grid --- */
.grid {
  display: grid;
  gap: var(--space-md);
}

.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 767px) {
  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

@media (min-width: 768px) and (max-width: 1061px) {
  .grid--3,
  .grid--4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  font-size: 0.9375rem;
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background: var(--color-primary-light);
  color: var(--color-white);
}

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

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

.btn--accent {
  background: var(--color-accent);
  color: var(--color-text);
}

.btn--accent:hover {
  background: var(--color-accent-light);
}

/* --- Table --- */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th, td {
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--color-border);
}

th {
  background: var(--color-primary);
  color: var(--color-white);
  font-weight: 600;
  white-space: nowrap;
}

tr:hover td {
  background: var(--color-bg-section);
}

/* --- Visibility --- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  border: 0;
}

.hide-mobile {
  display: none;
}

@media (min-width: 768px) {
  .hide-mobile { display: initial; }
  .hide-desktop { display: none; }
}

/* --- Spacing Helpers --- */
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.text-center { text-align: center; }

/* --- Main Content Push (for fixed header) --- */
main {
  padding-top: var(--header-height);
}