/* ===================================
   세무법인 강남 - Custom Styles
   =================================== */

/* Google Fonts - Pretendard */
@import url('https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css');

/* CSS Variables */
:root {
  --primary: #1F4E79;
  --primary-dark: #163A5C;
  --primary-light: #2D6A9F;
  --accent: #28A745;
  --accent-dark: #1E7E34;
  --accent-light: #34CE57;
  --background: #FFFFFF;
  --background-alt: #F8F9FA;
  --text-primary: #1A1A1A;
  --text-secondary: #4A5568;
  --text-muted: #718096;
  --border-color: #E2E8F0;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}

/* Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
  color: var(--text-primary);
  background-color: var(--background);
  line-height: 1.6;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

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

@media (min-width: 768px) {
  h1 { font-size: 3.5rem; }
  h2 { font-size: 2.5rem; }
  h3 { font-size: 1.75rem; }
}

/* Navigation */
.nav-link {
  position: relative;
  transition: color 0.3s ease;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--accent);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

/* Hero Section */
.hero-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
}

.hero-overlay {
  background: linear-gradient(to right, rgba(31, 78, 121, 0.95) 0%, rgba(31, 78, 121, 0.7) 100%);
}

/* Buttons */
.btn-primary {
  background-color: var(--accent);
  color: white;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background-color: var(--accent-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background-color: white;
  color: var(--primary);
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 2px solid var(--primary);
}

.btn-secondary:hover {
  background-color: var(--primary);
  color: white;
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  color: white;
  padding: 0.875rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: 2px solid white;
}

.btn-outline:hover {
  background-color: white;
  color: var(--primary);
  transform: translateY(-2px);
}

/* Cards */
.service-card {
  background: white;
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--accent);
}

.service-card .icon-wrapper {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.service-card .icon-wrapper i {
  font-size: 28px;
  color: white;
}

/* Profile Cards */
.profile-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.profile-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.profile-card .profile-image {
  width: 100%;
  height: 280px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-card .profile-image i {
  font-size: 120px;
  color: rgba(255, 255, 255, 0.3);
}

/* Accordion */
.accordion-item {
  border: 1px solid var(--border-color);
  border-radius: 12px;
  margin-bottom: 1rem;
  overflow: hidden;
  transition: all 0.3s ease;
}

.accordion-item:hover {
  border-color: var(--primary);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  background: white;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
  transition: all 0.3s ease;
}

.accordion-header:hover {
  background: var(--background-alt);
}

.accordion-header i {
  transition: transform 0.3s ease;
}

.accordion-item.active .accordion-header i {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.accordion-item.active .accordion-content {
  max-height: 500px;
}

.accordion-body {
  padding: 0 1.5rem 1.5rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent), var(--primary));
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  background: var(--accent);
  border-radius: 50%;
  transform: translateX(-5px);
}

/* Stats */
.stat-card {
  text-align: center;
  padding: 2rem;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  color: var(--text-secondary);
  margin-top: 0.5rem;
  font-weight: 500;
}

/* Contact Form */
.form-input {
  width: 100%;
  padding: 1rem 1.25rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  transition: all 0.3s ease;
  background: white;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(31, 78, 121, 0.1);
}

.form-input::placeholder {
  color: var(--text-muted);
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* Map Container */
.map-container {
  border-radius: 16px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

/* News Cards */
.news-card {
  background: white;
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
}

.news-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.news-card .news-image {
  height: 200px;
  background: linear-gradient(135deg, var(--primary-light) 0%, var(--primary) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
}

.news-card .news-image i {
  font-size: 48px;
  color: rgba(255, 255, 255, 0.5);
}

/* Case Study Cards */
.case-card {
  background: white;
  border-radius: 16px;
  padding: 2rem;
  transition: all 0.3s ease;
  border: 1px solid var(--border-color);
  position: relative;
}

.case-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--accent);
}

.case-card .case-number {
  position: absolute;
  top: -12px;
  left: 24px;
  background: var(--accent);
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

/* Footer */
footer {
  background: var(--primary-dark);
  color: white;
}

footer a {
  color: rgba(255, 255, 255, 0.8);
  transition: color 0.3s ease;
}

footer a:hover {
  color: var(--accent);
}

/* Scroll to Top Button */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  background: var(--primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-lg);
  z-index: 1000;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  background: var(--accent);
  transform: translateY(-4px);
}

/* Mobile Menu */
.mobile-menu {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: white;
  z-index: 100;
  transform: translateX(100%);
  transition: transform 0.3s ease;
}

.mobile-menu.active {
  transform: translateX(0);
}

/* Trust Badges */
.trust-badge {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  background: white;
  border-radius: 12px;
  border: 1px solid var(--border-color);
}

.trust-badge i {
  font-size: 32px;
  color: var(--primary);
}

/* Calendar Style */
.calendar-slot {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.3s ease;
  text-align: center;
}

.calendar-slot:hover {
  border-color: var(--primary);
  background: rgba(31, 78, 121, 0.05);
}

.calendar-slot.selected {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

.calendar-slot.disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Section Titles */
.section-title {
  position: relative;
  display: inline-block;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 0;
  width: 60px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
}

.section-title.center::after {
  left: 50%;
  transform: translateX(-50%);
}

/* Responsive */
@media (max-width: 768px) {
  .hero-gradient {
    min-height: 100vh;
  }

  .stat-number {
    font-size: 2.5rem;
  }

  .service-card,
  .profile-card {
    margin-bottom: 1.5rem;
  }
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

/* Custom scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--background-alt);
}

::-webkit-scrollbar-thumb {
  background: var(--primary);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--primary-dark);
}