/* ===============================================
   뜸 연기학원 - Design 2: Modern Black & Gold
   More rounded, softer gradients, modern touches
   =============================================== */

/* ===== CSS Variables ===== */
:root {
  --color-black: #0d0d0d;
  --color-black-light: #171717;
  --color-black-lighter: #1f1f1f;
  --color-gold: #e8b923;
  --color-gold-light: #f5d24a;
  --color-gold-dark: #c9a01c;
  --color-accent: #ffb800;
  --color-white: #ffffff;
  --color-gray: #8a8a8a;
  --color-gray-light: #b3b3b3;
  --color-gray-dark: #4a4a4a;
  --color-border: #2d2d2d;

  --font-main: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  --font-display: 'Montserrat', var(--font-main);

  --header-height: 80px;
  --header-height-mobile: 64px;
  --container-width: 1200px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 28px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  background: var(--color-black);
  color: var(--color-white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul, ol {
  list-style: none;
}

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

/* ===== Container ===== */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(255,255,255,0.06);
  z-index: 1000;
}

.header-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.logo-img {
  height: 44px;
  width: auto;
  border-radius: 8px;
}

/* Navigation */
.nav {
  display: flex;
  gap: 4px;
}

.nav-item {
  position: relative;
}

.nav-link {
  display: block;
  padding: 12px 18px;
  font-size: 15px;
  font-weight: 600;
  color: var(--color-gray-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-link:hover {
  color: var(--color-white);
  background: rgba(255,255,255,0.05);
}

.nav-link.active {
  color: var(--color-gold);
}

/* Dropdown */
.dropdown {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  min-width: 180px;
  background: var(--color-black-lighter);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 8px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  box-shadow: 0 20px 40px rgba(0,0,0,0.5);
}

.nav-item:hover .dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-link {
  display: block;
  padding: 12px 16px;
  font-size: 14px;
  color: var(--color-gray-light);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.dropdown-link:hover {
  background: rgba(232, 185, 35, 0.1);
  color: var(--color-gold);
}

/* Mobile menu toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  width: 28px;
  padding: 4px 0;
}

.menu-toggle span {
  width: 100%;
  height: 2px;
  background: var(--color-white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ===== Hero Section ===== */
.hero {
  margin-top: var(--header-height);
  position: relative;
  width: 100%;
  overflow: hidden;
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.hero-banner {
  width: 100%;
  height: auto;
  display: block;
}

/* ===== Section Common ===== */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.25em;
  color: var(--color-gold);
  text-transform: uppercase;
  margin-bottom: 16px;
  padding: 8px 16px;
  background: rgba(232, 185, 35, 0.1);
  border-radius: 100px;
}

.section-title {
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.section-desc {
  font-size: 16px;
  color: var(--color-gray);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  font-size: 15px;
  font-weight: 700;
  border-radius: 100px;
  transition: all var(--transition);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
  color: var(--color-black);
  box-shadow: 0 4px 20px rgba(232, 185, 35, 0.25);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(232, 185, 35, 0.4);
}

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

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

/* ===== Cards ===== */
.card {
  background: var(--color-black-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition);
}

.card:hover {
  border-color: rgba(232, 185, 35, 0.3);
  transform: translateY(-6px);
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

/* ===== Page Header ===== */
.page-header {
  margin-top: var(--header-height);
  padding: 100px 0 80px;
  background: linear-gradient(180deg, var(--color-black-light) 0%, var(--color-black) 100%);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.page-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 300px;
  background: radial-gradient(ellipse, rgba(232, 185, 35, 0.08), transparent 70%);
  pointer-events: none;
}

.page-title {
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 800;
  color: var(--color-white);
  margin-bottom: 12px;
  position: relative;
}

.page-breadcrumb {
  font-size: 14px;
  color: var(--color-gray);
  position: relative;
}

.page-breadcrumb a:hover {
  color: var(--color-gold);
}

/* ===== Footer ===== */
.footer {
  background: var(--color-black-light);
  border-top: 1px solid var(--color-border);
  padding: 60px 0 30px;
}

.footer-inner {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding-bottom: 40px;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 30px;
}

.footer-logo-img {
  height: 48px;
  margin-bottom: 20px;
  border-radius: 8px;
}

.footer-info {
  font-size: 14px;
  color: var(--color-gray);
  line-height: 1.9;
}

.footer-info strong {
  color: var(--color-white);
  font-weight: 700;
}

.footer-contact {
  text-align: right;
}

.footer-phone {
  font-size: 28px;
  font-weight: 800;
  color: var(--color-gold);
  margin-bottom: 8px;
}

.footer-hours {
  font-size: 14px;
  color: var(--color-gray);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 13px;
  color: var(--color-gray-dark);
}

.footer-links a {
  margin-left: 20px;
  color: var(--color-gray);
}

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

/* ===== Mobile Navigation ===== */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--header-height-mobile);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-black);
  padding: 24px;
  z-index: 999;
  overflow-y: auto;
}

.mobile-nav.active {
  display: block;
}

.mobile-nav-link {
  display: block;
  padding: 18px 0;
  font-size: 18px;
  font-weight: 600;
  color: var(--color-white);
  border-bottom: 1px solid var(--color-border);
}

.mobile-dropdown {
  display: none;
  padding-left: 20px;
}

.mobile-nav-item.active .mobile-dropdown {
  display: block;
}

.mobile-dropdown-link {
  display: block;
  padding: 14px 0;
  font-size: 15px;
  color: var(--color-gray);
}

/* ===== Responsive ===== */
@media (max-width: 991px) {
  .nav {
    display: none;
  }

  .menu-toggle {
    display: flex;
  }

  .header {
    height: var(--header-height-mobile);
  }

  .hero,
  .page-header {
    margin-top: var(--header-height-mobile);
  }

  .section {
    padding: 70px 0;
  }

  .footer-top {
    flex-direction: column;
    gap: 32px;
  }

  .footer-contact {
    text-align: left;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 16px;
    text-align: center;
  }

  .footer-links a {
    margin: 0 10px;
  }
}

/* ===== Scroll Animations ===== */
.scroll-animate {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.scroll-animate.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ===== Loading States ===== */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 60px;
  color: var(--color-gray);
}

.loading::after {
  content: '';
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-gold);
  border-top-color: transparent;
  border-radius: 50%;
  margin-left: 12px;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}