/* ========================================
   학교 청소 전문 업체 - 기본 스타일
   ======================================== */

/* ----------------------------------------
   Font - 잠실체
   ---------------------------------------- */
@font-face {
  font-family: 'TheJamsil';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2302_01@1.0/TheJamsil1Thin.woff2') format('woff2');
  font-weight: 100;
  font-display: swap;
}

@font-face {
  font-family: 'TheJamsil';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2302_01@1.0/TheJamsil2Light.woff2') format('woff2');
  font-weight: 300;
  font-display: swap;
}

@font-face {
  font-family: 'TheJamsil';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2302_01@1.0/TheJamsil3Regular.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'TheJamsil';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2302_01@1.0/TheJamsil4Medium.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}

@font-face {
  font-family: 'TheJamsil';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2302_01@1.0/TheJamsil5Bold.woff2') format('woff2');
  font-weight: 700;
  font-display: swap;
}

@font-face {
  font-family: 'TheJamsil';
  src: url('https://cdn.jsdelivr.net/gh/projectnoonnu/noonfonts_2302_01@1.0/TheJamsil6ExtraBold.woff2') format('woff2');
  font-weight: 800;
  font-display: swap;
}

/* ----------------------------------------
   CSS Variables
   ---------------------------------------- */
:root {
  /* Colors */
  --color-white: #ffffff;
  --color-black: #111111;
  --color-gray-50: #fafafa;
  --color-gray-100: #f5f5f5;
  --color-gray-200: #e5e5e5;
  --color-gray-300: #d4d4d4;
  --color-gray-400: #a3a3a3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;
  
  /* Point Color */
  --color-primary: #2563eb;
  --color-primary-hover: #1d4ed8;
  
  /* Typography */
  --font-family: 'TheJamsil', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  
  /* Spacing */
  --container-width: 1200px;
  --section-padding: 80px;
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-weight: 400;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

ul, ol {
  list-style: none;
}

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

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

input, textarea, select {
  font-family: inherit;
  font-size: inherit;
}

/* ----------------------------------------
   Layout
   ---------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 20px;
}

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

/* ----------------------------------------
   Typography
   ---------------------------------------- */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

.text-sm { font-size: 0.875rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }

.text-light { font-weight: 300; }
.text-regular { font-weight: 400; }
.text-medium { font-weight: 500; }
.text-bold { font-weight: 700; }

.text-gray { color: var(--color-gray-500); }
.text-primary { color: var(--color-primary); }

/* ----------------------------------------
   Buttons
   ---------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 500;
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

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

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

.btn-outline {
  background-color: transparent;
  border: 1px solid var(--color-black);
  color: var(--color-black);
}

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

.btn-lg {
  padding: 16px 32px;
  font-size: 1.125rem;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.875rem;
}

/* ----------------------------------------
   Header
   ---------------------------------------- */
#header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: transparent;
  border-bottom: 1px solid transparent;
  transition: background-color 0.15s ease, border-color 0.15s ease;
}

#header.scrolled {
  background-color: var(--color-white);
  border-bottom: 1px solid var(--color-gray-200);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
}

.logo img {
  height: 36px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: filter 0.3s ease 0.1s;
}

.logo span {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--color-white);
  transition: color 0.3s ease 0.1s;
}

#header.scrolled .logo img {
  filter: none;
}

#header.scrolled .logo span {
  color: var(--color-black);
}

.nav-menu {
  display: flex;
  gap: 40px;
}

.nav-menu a {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--color-white);
  transition: color 0.3s ease 0.1s;
}

.nav-menu a:hover {
  color: rgba(255, 255, 255, 0.7);
}

#header.scrolled .nav-menu a {
  color: var(--color-black);
}

#header.scrolled .nav-menu a:hover {
  color: var(--color-primary);
}

#header.scrolled .nav-menu a.active {
  color: var(--color-primary);
}

.nav-menu a.active {
  color: var(--color-primary);
  font-weight: 600;
}

.header-contact {
  font-weight: 700;
  color: var(--color-white);
  transition: color 0.3s ease 0.1s;
}

#header.scrolled .header-contact {
  color: var(--color-primary);
}

/* ----------------------------------------
   Footer
   ---------------------------------------- */
#footer {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  padding: 60px 0 30px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 20px;
}

.footer-logo img {
  height: 32px;
  width: auto;
}

.footer-logo span {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--color-white);
}

.footer-info h3 {
  font-size: 1.25rem;
  margin-bottom: 20px;
}

.footer-info p {
  color: var(--color-gray-400);
  font-size: 0.875rem;
  line-height: 1.8;
}

.footer-links h4 {
  font-size: 1rem;
  margin-bottom: 16px;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links a {
  color: var(--color-gray-400);
  font-size: 0.875rem;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: var(--color-white);
}

.footer-bottom {
  margin-top: 40px;
  padding-top: 20px;
  border-top: 1px solid var(--color-gray-700);
  text-align: center;
  color: var(--color-gray-500);
  font-size: 0.875rem;
}

/* ----------------------------------------
   Cards
   ---------------------------------------- */
.card {
  background-color: var(--color-white);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: box-shadow 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.card-desc {
  color: var(--color-gray-600);
  font-size: 0.9375rem;
}

/* ----------------------------------------
   Form Elements
   ---------------------------------------- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-weight: 500;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--color-gray-300);
  border-radius: var(--radius-md);
  transition: border-color 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-textarea {
  resize: vertical;
  min-height: 120px;
}

/* ----------------------------------------
   Utilities
   ---------------------------------------- */
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mt-4 { margin-top: 32px; }
.mt-5 { margin-top: 48px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }
.mb-4 { margin-bottom: 32px; }
.mb-5 { margin-bottom: 48px; }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

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

.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.gap-3 { gap: 24px; }
.gap-4 { gap: 32px; }