@import url("https://cdn.jsdelivr.net/gh/orioncactus/pretendard@v1.3.9/dist/web/static/pretendard.min.css");

/* Straumann Campus Design System */
:root {
  /* Impeccable Design Tokens */
  --color-primary: #007664;
  --color-primary-dark: #005a4a;
  --color-primary-light: #e6f4f1;
  --brand-navy: #003b5c;
  
  --color-text: #1f2937;
  --color-text-secondary: #6b7280;
  --color-bg: #ffffff;
  --color-bg-light: #f8f9fa;
  --color-border: #e1e4e8;
  
  --font-main: 'Arial', 'Noto Sans KR', sans-serif;
  
  --radius-sm: 0px;
  --radius-md: 0px;
  --radius-lg: 0px;
  
  --shadow-md: none;

  /* Legacy primary aliases */
  --primary-100: var(--color-primary-light);
  --primary-200: #80c4b5;
  --primary-500: var(--color-primary);
  --primary-600: var(--color-primary);
  --primary-700: var(--color-primary-dark);
  --primary-800: var(--color-primary-dark);
  --primary-900: var(--brand-navy);
  --brand-light: var(--color-primary-light);

  /* Accent Colors */
  --accent-500: #e6ad3a;
  --accent-600: #ca8a2a;
  
  /* Status Colors */
  --status-success: #10b981;
  --status-warning: #f59e0b;
  --status-error: #ef4444;
  --status-info: #3b82f6;
  
  /* Gray Scale */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;
}

* { box-sizing: border-box; }

body {
  font-family: 'Pretendard', 'Noto Sans KR', sans-serif;
  background-color: var(--gray-50);
  color: var(--gray-900);
  margin: 0;
  padding: 0;
  line-height: 1.5;
}

/* Global Image Auto-resizing */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.str-card-img-box, 
.seminar-card-image-wrapper, 
.str-hero-image-wrap {
  width: 100%;
  aspect-ratio: 16 / 9;
  overflow: hidden;
  background: #f4f4f4;
}

.str-card-img-box img, 
.seminar-card-image-wrapper img, 
.str-hero-image-wrap img,
.str-card-img,
.seminar-card-image,
.str-hero-image {
  width: 100% !important;
  height: 100% !important;
  object-fit: cover !important;
  display: block;
}

/* Container */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

@media (min-width: 768px) {
  .container { padding: 0 2rem; }
}

/* Navigation */
.navbar {
  background: white;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  position: sticky;
  top: 0;
  z-index: 100;
  height: 70px;
  display: flex;
  align-items: center;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
}

.navbar-brand a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--brand-navy);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-menu {
  display: flex;
  gap: 2.5rem;
}

.navbar-menu a {
  color: var(--gray-600);
  text-decoration: none;
  font-weight: 600;
  font-size: 1rem;
  transition: all 0.2s;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-menu a:hover,
.navbar-menu a.active {
  color: var(--color-primary);
}

/* Hero Section */
.hero-section {
  background: var(--color-primary);
  color: white;
  padding: 6rem 0;
  margin-bottom: 3rem;
  position: relative;
  overflow: hidden;
  text-align: center;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(255,255,255,0.05) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(255,255,255,0.05) 0%, transparent 50%);
  opacity: 1;
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.hero-title span {
  color: var(--primary-200);
  position: relative;
  display: inline-block;
}

.hero-title span::after {
  content: '';
  position: absolute;
  bottom: 10px;
  left: 0;
  right: 0;
  height: 12px;
  background: rgba(255,255,255,0.15);
  z-index: -1;
  transform: skewX(-15deg);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.9);
  max-width: 700px;
  margin: 0 auto 2.5rem;
  font-weight: 400;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
}

.btn-light {
  background: white;
  color: var(--brand-navy);
  border: 2px solid white;
  font-weight: 700;
}

.btn-light:hover {
  background: transparent;
  color: white;
}

/* Seminar Layout */
.seminar-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  padding-bottom: 4rem;
}

@media (min-width: 1024px) {
  .seminar-layout {
    grid-template-columns: 350px 1fr;
  }
}

/* Calendar Styling */
.calendar-shell {
  background: white;
  border-radius: 1.5rem;
  padding: 1.5rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--gray-100);
  position: sticky;
  top: 90px;
}

.calendar-switcher {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.calendar-switcher__btn {
  width: 42px;
  height: 42px;
  border-radius: 999px;
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--gray-600);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s;
  box-shadow: 0 4px 12px rgba(0,0,0,0.04);
}

.calendar-switcher__btn:hover {
  background: var(--color-primary-light);
  border-color: var(--primary-200);
  color: var(--color-primary);
}

.calendar-switcher__month {
  flex: 1;
  height: 42px;
  padding: 0 1rem;
  border-radius: 999px;
  background: linear-gradient(180deg, #f6fbfa 0%, #edf7f5 100%);
  border: 1px solid #d9ece7;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-navy);
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.calendar-switcher__today {
  width: 100%;
  height: 40px;
  border-radius: 0.9rem;
  border: 1px solid var(--gray-200);
  background: var(--gray-50);
  color: var(--gray-700);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  margin-bottom: 1rem;
}

.calendar-switcher__today:hover {
  background: var(--color-primary-light);
  border-color: #c7e4dd;
  color: var(--color-primary);
}

.calendar-board {
  border-radius: 1.2rem;
  border: 1px solid var(--gray-100);
  background: #fcfefe;
  padding: 0.9rem;
}

.calendar-weekdays,
.calendar-days {
  display: grid;
  grid-template-columns: repeat(7, minmax(0, 1fr));
  gap: 0.4rem;
}

.calendar-weekdays {
  margin-bottom: 0.45rem;
}

.calendar-weekdays span {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 28px;
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--gray-400);
}

.calendar-day {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0.95rem;
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--gray-700);
  cursor: pointer;
  transition: all 0.2s;
  position: relative;
  border: 1px solid transparent;
  background: white;
  padding: 0;
}

.calendar-days .calendar-day.empty {
  min-height: 44px;
}

.calendar-day:hover:not(.empty) {
  background-color: var(--color-primary-light);
  color: var(--color-primary);
  border-color: #c7e4dd;
  transform: translateY(-1px);
}

.calendar-day.today {
  background-color: var(--color-primary);
  color: white;
  font-weight: 700;
  box-shadow: 0 10px 20px rgba(0, 118, 100, 0.18);
}

.calendar-day-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
}

.calendar-day.has-seminar::after {
  content: '';
  position: absolute;
  bottom: 6px;
  left: 50%;
  transform: translateX(-50%);
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--color-primary);
}

.calendar-day.today.has-seminar::after {
  background-color: white;
}

.calendar-day.empty {
  background: transparent;
  border: none;
  cursor: default;
}

/* Section Headers */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 2px solid var(--gray-100);
}

.section-title {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--gray-900);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.section-title i {
  color: var(--color-primary);
}

.seminar-count {
  font-size: 1rem;
  color: var(--gray-500);
  font-weight: 600;
}

/* Seminar Grid */
.seminar-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
}

.seminar-card {
  background: white;
  border-radius: 1.25rem;
  overflow: hidden;
  border: 1px solid var(--gray-100);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
  height: 100%;
}

.seminar-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 16px 32px rgba(0, 59, 92, 0.1);
  border-color: var(--primary-200);
}

.str-card-img-box {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: #f4f4f4;
    overflow: hidden;
}

.str-card-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.seminar-card-image-wrapper {
  position: relative;
  padding-top: 56.25%; /* 16:9 Aspect Ratio */
  overflow: hidden;
}

.seminar-card-image {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.seminar-card:hover .seminar-card-image {
  transform: scale(1.05);
}

.card-badge {
  position: absolute;
  top: 1rem;
  right: 1rem;
  padding: 0.375rem 0.875rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.card-badge.recruiting  { color: var(--color-primary);  background: rgba(230,244,241,.97); }
.card-badge.closing    { color: #b45309;               background: rgba(254,243,199,.97); }
.card-badge.full       { color: #b91c1c;               background: rgba(254,226,226,.97); }
.card-badge.closed     { color: var(--gray-600);        background: rgba(243,244,246,.97); }
.card-badge.preparing  { color: #5b21b6;               background: rgba(237,233,254,.97); }

.seminar-card-content {
  padding: 1.75rem;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.seminar-card-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 1rem;
  color: var(--gray-900);
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.seminar-card-info {
  margin-bottom: 1.5rem;
  flex: 1;
}

.info-item {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 0.9rem;
  color: var(--gray-600);
  margin-bottom: 0.5rem;
}

.info-item i {
  color: var(--gray-400);
  width: 16px;
  text-align: center;
}

.seminar-card-footer {
  padding-top: 1.25rem;
  border-top: 1px solid var(--gray-100);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.price {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--brand-navy);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 600;
  font-size: 0.9rem;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
  text-decoration: none;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background-color: var(--brand-navy);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 118, 100, 0.25);
}

.btn-secondary {
  background-color: var(--gray-100);
  color: var(--gray-700);
}

.btn-secondary:hover {
  background-color: var(--gray-200);
}

.btn-outline {
  border: 1px solid var(--gray-200);
  background: white;
  color: var(--gray-700);
}

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

.btn-disabled {
  background-color: var(--gray-100);
  color: var(--gray-400);
  cursor: not-allowed;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 6rem 2rem;
  background: white;
  border-radius: 1.5rem;
  border: 1px dashed var(--gray-300);
  color: var(--gray-500);
}

.empty-state i {
  font-size: 3rem;
  color: var(--gray-300);
  margin-bottom: 1.5rem;
}

.empty-state h3 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.5rem;
}

/* Placeholder Image */
.no-image-placeholder {
  width: 100%;
  height: 100%;
  background: var(--gray-100);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--gray-400);
  font-weight: 600;
  text-align: center;
}

.no-image-placeholder i {
  font-size: 3rem;
  margin-bottom: 0.5rem;
  color: var(--gray-300);
}

/* Footer Section */
.footer-links a:hover {
  color: white;
}

.str-card-title a:hover {
    color: var(--color-primary);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.4);
  font-size: 0.875rem;
}

/* Responsive */
@media (max-width: 768px) {
  /* Headings & Texts */
  .hero-title { font-size: 2rem; margin-top: 2rem; }
  .section-title { font-size: 1.5rem; text-align: center; }
  .hero-slide { padding: 4rem 0.5rem; }
  
  /* Navbar Mobile */
  .navbar-brand a { font-size: 1.25rem; }
  
  .navbar-menu { 
    display: none; 
    flex-direction: column; 
    width: 100%; 
    background: white; 
    position: absolute; 
    top: 70px; /* navbar height */
    left: 0; 
    padding: 1.5rem; 
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1); 
    z-index: 1000;
    border-top: 1px solid var(--gray-100);
    gap: 1rem;
    animation: slideDown 0.3s ease-out;
  }

  @keyframes slideDown {
    from { transform: translateY(-10px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
  }

  .navbar-menu.active {
    display: flex;
  }

  .navbar-menu a {
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    width: 100%;
  }

  .navbar-menu a:hover {
    background: var(--color-primary-light);
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--gray-50);
    border: none;
    border-radius: 50%;
    font-size: 1.25rem;
    color: var(--brand-navy);
    cursor: pointer;
    transition: all 0.2s;
  }

  .mobile-menu-btn:hover {
    background: var(--gray-100);
    color: var(--color-primary);
  }

  .navbar .container {
    justify-content: space-between;
    align-items: center;
    position: relative;
    height: 100%;
  }
  
  .admin-btn { 
    padding: 0.875rem 1.5rem !important; 
    margin-top: 0.5rem;
    width: 100%; 
    justify-content: center;
    background: var(--brand-navy) !important;
    color: white !important;
    border: none !important;
  }
  
  /* Layout */
  .seminar-layout { gap: 2rem; }
  .calendar-shell { position: static; margin-bottom: 2rem; padding: 1rem; border-radius: 1.1rem; }
  .calendar-switcher { gap: 0.5rem; }
  .calendar-switcher__btn, .calendar-switcher__month { height: 40px; }
  .calendar-switcher__month { min-width: 0; font-size: 0.92rem; padding: 0 0.75rem; }
  .calendar-switcher__today { height: 38px; font-size: 0.88rem; margin-bottom: 0.85rem; }
  .calendar-board { padding: 0.75rem; }
  .calendar-weekdays, .calendar-days { gap: 0.25rem; }
  .calendar-weekdays span { min-height: 24px; font-size: 0.74rem; }
  .calendar-day { min-height: 38px; border-radius: 0.85rem; font-size: 0.84rem; }
  .calendar-days .calendar-day.empty { min-height: 38px; }
  .calendar-day.has-seminar::after { bottom: 4px; width: 4px; height: 4px; }
  
  /* View & Grid Details */
  .detail-grid { grid-template-columns: 1fr; gap: 2rem; }
  .view-tabs { display: flex; flex-wrap: nowrap; overflow-x: auto; -webkit-overflow-scrolling: touch; padding-bottom: 5px; }
  .tab-btn { white-space: nowrap; padding: 0.75rem 1rem; font-size: 0.9rem; }
  .detail-image-wrapper { height: 250px; }
  .info-list li { grid-template-columns: 80px 1fr; }
  
  /* Register Form Details */
  .form-row { grid-template-columns: 1fr; gap: 0; }
  .action-buttons { flex-direction: column; gap: 1rem; }
  .action-buttons .btn { width: 100%; }

  /* Footer */
  .footer-content { grid-template-columns: 1fr; gap: 2rem; }
  .seminar-grid { grid-template-columns: 1fr; gap: 1.25rem; }
  .seminar-card-content { padding: 1.25rem; }
  .seminar-card-footer { flex-direction: column; align-items: stretch; gap: 0.9rem; }
  .seminar-card-footer .btn,
  .seminar-card-footer .btn-disabled { width: 100%; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; }
  .section-header { align-items: flex-start; gap: 0.75rem; flex-direction: column; }
}

@media (min-width: 769px) {
  .mobile-menu-btn { display: none; }
}

/* ============================================================
   Main Footer — synchronized with stkr-edu.com
   ============================================================ */
.main-footer {
    background: #2c2e2f;
    color: #fff;
    padding: 80px 0 60px;
    display: flex;
    justify-content: center;
}
.main-footer .inner_container {
    width: 100%;
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 40px;
}
.f-top-box {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    gap: 60px;
    margin-bottom: 40px;
}
.f_logo img {
    height: 35px;
    opacity: 0.9;
}
.f-info {
    font-size: 14px;
    color: #a4a4a4;
    line-height: 1.8;
}
.f-info p { margin: 0; }
.privacy-link {
    color: #fff;
    font-weight: 700;
    text-decoration: none;
    display: inline-block;
    margin-bottom: 5px;
}
.f-mid-box {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 30px;
    margin-bottom: 20px;
}
.foot_company {
    font-size: 14px;
    color: #888;
    line-height: 1.6;
    margin: 0;
}
.f-bottom-box {
    margin-top: 15px;
}
.copyright {
    font-size: 14px;
    color: #666;
    margin: 0;
}

@media (max-width: 768px) {
    .f-top-box { gap: 30px; }
    .main-footer { padding: 40px 0 30px; }
}

/* ============================================================
   Button & Badge Styles
   ============================================================ */
.str-btn-primary {
    background-color: var(--color-primary);
    color: #fff;
    border: none;
    padding: 1.1rem 2.5rem;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    border-radius: 4px;
    transition: background 0.2s;
    text-transform: uppercase;
    text-decoration: none;
    display: inline-block;
}
.str-btn-primary:hover {
    background-color: var(--color-primary-dark);
}

.str-btn-outline {
    background-color: transparent;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
    padding: 1.1rem 2.5rem;
    font-size: 1rem;
    font-weight: 800;
    cursor: pointer;
    border-radius: 4px;
    transition: all 0.2s;
    text-transform: uppercase;
    text-decoration: none;
    display: inline-block;
}
.str-btn-outline:hover {
    background-color: var(--color-primary);
    color: #fff;
}

/* ============================================================
   Admin Shell
   ============================================================ */
.admin-shell { display:flex; min-height:calc(100vh - 81px); background:var(--gray-50); font-family:var(--font-main); font-size:16px; line-height:1.5; color:var(--gray-800); }
.admin-shell *, .admin-shell *::before, .admin-shell *::after { box-sizing:border-box; font-family:inherit; }
.admin-shell__sidebar { width:280px; background:linear-gradient(180deg, #003b5c 0%, #0b4e69 100%); color:#fff; display:flex; flex-direction:column; flex-shrink:0; box-shadow:12px 0 40px rgba(0, 59, 92, 0.12); font-size:15px; }
.admin-shell__brand { padding:2rem 1.5rem 1.5rem; border-bottom:1px solid rgba(255,255,255,0.08); }
.admin-shell__brand-eyebrow { font-size:11px; font-weight:700; letter-spacing:0.12em; text-transform:uppercase; color:rgba(255,255,255,0.45); margin-bottom:0.5rem; }
.admin-shell__brand-title { font-size:20px; font-weight:800; letter-spacing:-0.02em; }
.admin-shell__nav { padding:1rem 0; flex:1; }
.admin-shell__section-title { padding:0.9rem 1.5rem 0.45rem; font-size:11px; font-weight:700; letter-spacing:0.08em; color:rgba(255,255,255,0.38); }
.admin-shell__nav-link { display:flex; align-items:center; gap:0.85rem; padding:0.9rem 1.5rem; color:rgba(255,255,255,0.74); text-decoration:none; border-left:3px solid transparent; transition:background 0.2s ease, color 0.2s ease, border-color 0.2s ease; }
.admin-shell__nav-icon { width:34px; height:34px; border-radius:12px; display:inline-flex; align-items:center; justify-content:center; background:rgba(255,255,255,0.07); border:1px solid rgba(255,255,255,0.08); box-shadow:inset 0 1px 0 rgba(255,255,255,0.03); flex-shrink:0; transition:background 0.2s ease, border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease; }
.admin-shell__nav-link i { width:18px; text-align:center; font-size:14px; }
.admin-shell__nav-link span { font-size:15px; font-weight:600; line-height:1.4; }
.admin-shell__nav-link:hover, .admin-shell__nav-link.is-active { background:rgba(255,255,255,0.08); color:#fff; border-left-color:#00a58d; }
.admin-shell__nav-link:hover .admin-shell__nav-icon { background:rgba(0, 165, 141, 0.2); border-color:rgba(0, 165, 141, 0.28); transform:translateY(-1px); }
.admin-shell__nav-link.is-active .admin-shell__nav-icon { background:linear-gradient(180deg, rgba(0,165,141,0.32) 0%, rgba(0,118,100,0.24) 100%); border-color:rgba(95, 226, 204, 0.32); color:#d8fffa; box-shadow:0 10px 20px rgba(0, 118, 100, 0.16); }
.admin-shell__footer { padding:1.25rem 1.5rem 1.5rem; border-top:1px solid rgba(255,255,255,0.08); }
.admin-shell__site-link { display:inline-flex; align-items:center; gap:0.55rem; color:rgba(255,255,255,0.68); text-decoration:none; font-size:14px; font-weight:600; transition:color 0.2s ease; }
.admin-shell__site-link:hover { color:#fff; }
.admin-shell__content { flex:1; padding:2rem; overflow-y:auto; font-size:15px; }
.admin-shell__content p, .admin-shell__content li, .admin-shell__content dd, .admin-shell__content dt, .admin-shell__content td, .admin-shell__content th, .admin-shell__content input, .admin-shell__content select, .admin-shell__content textarea, .admin-shell__content button, .admin-shell__content a, .admin-shell__content span, .admin-shell__content small, .admin-shell__content label, .admin-shell__content code { font-size:inherit; }
.admin-shell__content h1 { font-size:32px; }
.admin-shell__content h2 { font-size:22px; }
.admin-shell__content h3 { font-size:18px; }
.admin-shell__content h4 { font-size:16px; }
.admin-card { background:#fff; border:1px solid var(--gray-200); border-radius:1.25rem; padding:2rem; box-shadow:0 14px 36px rgba(0, 59, 92, 0.06); margin-bottom:1.5rem; }
.admin-title { font-size:32px; font-weight:800; color:var(--brand-navy); display:flex; align-items:center; gap:0.75rem; margin-bottom:0; letter-spacing:-0.02em; }
.page-header { display:flex; justify-content:space-between; align-items:center; gap:1rem; margin-bottom:2rem; padding-bottom:1.5rem; border-bottom:1px solid var(--gray-100); }
.admin-page-intro { margin:0.75rem 0 0; color:var(--gray-500); font-size:15px; }
.admin-panel { background:#fff; border:1px solid var(--gray-200); border-radius:1rem; padding:1.5rem; box-shadow:0 8px 24px rgba(0, 59, 92, 0.04); }
.admin-panel + .admin-panel { margin-top:1rem; }
.admin-panel--soft { background:linear-gradient(180deg, #f6fbfa 0%, #edf7f5 100%); border-color:#d9ece7; }
.admin-panel__title { margin:0 0 1rem; font-size:18px; font-weight:700; color:var(--brand-navy); }
.admin-panel__desc { margin:0.5rem 0 0; color:var(--gray-600); font-size:15px; }
.admin-form-grid { display:grid; gap:1.25rem; }
.admin-form-grid--2 { grid-template-columns:repeat(2, minmax(0, 1fr)); }
.admin-form-grid--stats { grid-template-columns:repeat(2, minmax(0, 1fr)); }
.admin-field label { display:block; margin-bottom:0.5rem; font-size:15px; font-weight:600; color:var(--gray-700); }
.admin-field input, .admin-field select, .admin-field textarea { width:100%; padding:0.875rem 1rem; border:1px solid var(--gray-300); border-radius:0.75rem; font-size:15px; transition:border-color 0.2s ease, box-shadow 0.2s ease; background:#fff; }
.admin-field input:focus, .admin-field select:focus, .admin-field textarea:focus { outline:none; border-color:var(--color-primary); box-shadow:0 0 0 4px rgba(0, 118, 100, 0.08); }
.admin-help { margin-top:0.45rem; color:var(--gray-500); font-size:13px; }
.admin-message { padding:1rem 1.25rem; border-radius:0.875rem; margin-bottom:1.25rem; font-size:15px; font-weight:600; }
.admin-message--success { background:#edf8f4; border:1px solid #caeadd; color:#166534; }
.admin-message--error { background:#fff1f2; border:1px solid #fecdd3; color:#be123c; }
.admin-stat-box { background:#fff; border:1px solid var(--gray-200); border-radius:1rem; padding:1.35rem; text-align:center; }
.admin-stat-box__value { font-size:32px; font-weight:800; color:var(--color-primary); letter-spacing:-0.03em; }
.admin-stat-box__label { margin-top:0.35rem; font-size:14px; color:var(--gray-500); font-weight:600; }
.admin-list-card { border:1px solid var(--gray-200); border-radius:1rem; background:#fff; padding:1.25rem; transition:border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease; }
.admin-list-card:hover { border-color:#b9ddd6; box-shadow:0 10px 28px rgba(0, 118, 100, 0.08); transform:translateY(-1px); }
.admin-list-card.is-selected { border-color:var(--color-primary); background:var(--color-primary-light); box-shadow:0 10px 28px rgba(0, 118, 100, 0.12); }
.admin-stack { display:grid; gap:1rem; }
@media (max-width:1024px) { .admin-shell { flex-direction:column; } .admin-shell__sidebar { width:100%; } }
@media (max-width:768px) { .admin-shell { font-size:15px; } .admin-shell__sidebar, .admin-shell__content { font-size:14px; } .admin-shell__content { padding:1rem; } .admin-card { padding:1.25rem; border-radius:1rem; } .page-header { flex-direction:column; align-items:flex-start; } .admin-title, .admin-shell__content h1 { font-size:28px; } .admin-shell__content h2 { font-size:20px; } .admin-shell__content h3, .admin-panel__title { font-size:17px; } .admin-form-grid--2, .admin-form-grid--stats { grid-template-columns:1fr; } }

/* ============================================================
   Sessions / Program Section
   ============================================================ */
.str-sessions-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.str-session-card {
    background: #fcfefe;
    border: 1px solid #edf7f5;
    border-left: 5px solid var(--color-primary);
    padding: 1.5rem 2.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.65rem;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.str-session-card:hover {
    box-shadow: 0 10px 25px rgba(70, 185, 140, 0.1);
    transform: translateX(4px);
}

.str-session-time {
    font-size: 0.95rem;
    color: #666;
    font-weight: 500;
    letter-spacing: 0.02em;
}

.str-session-title {
    font-size: 1.35rem;
    color: var(--color-primary);
    font-weight: 700;
    line-height: 1.4;
    letter-spacing: -0.01em;
}

@media (max-width: 768px) {
    .str-session-card {
        padding: 1.25rem 1.75rem;
    }
    .str-session-title {
        font-size: 1.15rem;
    }
}