/* ==========================================================================
   UITS_Job_Hunters SPA Stylesheet
   Pure CSS3 with CSS Root Variables. No gradients, em-dashes, or emojis.
   ========================================================================== */

/* --------------------------------------------------------------------------
   CSS Custom Properties (Theme Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Light Theme (Default) */
  --bg-main: #f8f9fa;
  --bg-surface: #ffffff;
  --bg-subtle: #f1f3f5;
  --bg-hover: #e9ecef;
  
  --text-main: #111827;
  --text-muted: #4b5563;
  --text-subtle: #6b7280;
  
  --border-main: #e5e7eb;
  --border-strong: #d1d5db;
  
  --accent-primary: #0284c7;
  --accent-hover: #0369a1;
  --accent-text: #ffffff;
  
  --badge-bg: #e0f2fe;
  --badge-text: #0369a1;

  --badge-grad-bg: #dcfce7;
  --badge-grad-text: #166534;
  --badge-stud-bg: #fef3c7;
  --badge-stud-text: #92400e;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
}

[data-theme="dark"] {
  /* Dark Theme */
  --bg-main: #0a0a0a;
  --bg-surface: #121212;
  --bg-subtle: #1a1a1a;
  --bg-hover: #242424;
  
  --text-main: #ffffff;
  --text-muted: #a1a1aa;
  --text-subtle: #71717a;
  
  --border-main: #262626;
  --border-strong: #3f3f46;
  
  --accent-primary: #38bdf8;
  --accent-hover: #0284c7;
  --accent-text: #0a0a0a;
  
  --badge-bg: #164e63;
  --badge-text: #7dd3fc;

  --badge-grad-bg: #14532d;
  --badge-grad-text: #86efac;
  --badge-stud-bg: #78350f;
  --badge-stud-text: #fef3c7;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6);
}

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

html {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.5;
  background-color: var(--bg-main);
  color: var(--text-main);
  scroll-behavior: smooth;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  padding-top: 72px;
}

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

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

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

/* --------------------------------------------------------------------------
   Header & Fixed Navigation Bar
   -------------------------------------------------------------------------- */
.header-navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 72px;
  background-color: var(--bg-surface);
  border-bottom: 1px solid var(--border-main);
  z-index: 1000;
  display: flex;
  align-items: center;
}

.nav-container {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.brand-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 8px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-sm);
  color: var(--accent-primary);
}

.nav-controls {
  display: flex;
  align-items: center;
  gap: 24px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-link {
  display: inline-block;
  padding: 8px 14px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--text-main);
  background-color: var(--bg-subtle);
}

.nav-link.active {
  color: var(--accent-primary);
  background-color: var(--bg-subtle);
  font-weight: 600;
}

.theme-toggle-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-main);
  background-color: var(--bg-surface);
  color: var(--text-main);
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.theme-toggle-btn:hover {
  background-color: var(--bg-subtle);
  border-color: var(--border-strong);
}

.theme-icon-sun, .theme-icon-moon {
  display: none;
}

/* Toggle icon display based on current theme */
[data-theme="dark"] .theme-icon-sun {
  display: block;
}
:root:not([data-theme="dark"]) .theme-icon-moon {
  display: block;
}

.hamburger-btn {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--border-main);
  border-radius: var(--radius-md);
  background-color: var(--bg-surface);
  color: var(--text-main);
}

.hamburger-line {
  width: 20px;
  height: 2px;
  background-color: var(--text-main);
  margin: 2px 0;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

/* --------------------------------------------------------------------------
   Mobile Drawer Styling (<768px)
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
  .hamburger-btn {
    display: flex;
  }
  
  .nav-menu {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    width: 100%;
    background-color: var(--bg-surface);
    border-bottom: 1px solid var(--border-main);
    flex-direction: column;
    padding: 16px 24px;
    gap: 12px;
    box-shadow: var(--shadow-md);
  }
  
  .nav-menu.open {
    display: flex;
  }
  
  .nav-link {
    width: 100%;
    padding: 12px 16px;
  }
}

/* --------------------------------------------------------------------------
   Main Container & SPA Section Views
   -------------------------------------------------------------------------- */
.main-container {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 32px 24px 64px 24px;
}

.spa-section {
  display: none;
}

.spa-section.active {
  display: block;
}

/* Section Header Component */
.section-header {
  margin-bottom: 32px;
  border-bottom: 1px solid var(--border-main);
  padding-bottom: 16px;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.03em;
  margin-bottom: 8px;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   Buttons & UI Elements
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-align: center;
}

.btn-sm {
  padding: 6px 14px;
  font-size: 0.875rem;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--accent-text);
  border: 1px solid var(--accent-primary);
}

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

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

.btn-outline:hover {
  background-color: var(--bg-subtle);
  border-color: var(--text-main);
}

.btn-block {
  width: 100%;
}

.btn-icon {
  margin-right: 4px;
}

.btn-icon-right {
  margin-left: 4px;
}

/* --------------------------------------------------------------------------
   1. Home / Hero Section
   -------------------------------------------------------------------------- */
.hero-block {
  padding: 48px 32px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-lg);
  margin-bottom: 40px;
}

.hero-title-badge {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 12px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border-radius: var(--radius-sm);
  margin-bottom: 16px;
}

.hero-heading {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--text-main);
  line-height: 1.2;
  margin-bottom: 24px;
}

.hero-motto-card {
  background-color: var(--bg-subtle);
  border-left: 4px solid var(--accent-primary);
  padding: 20px 24px;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 32px;
}

.motto-label {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 6px;
}

.motto-quote {
  font-size: 1.25rem;
  font-weight: 500;
  font-style: italic;
  color: var(--text-main);
  line-height: 1.5;
}

.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Key Features Grid on Home */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.feature-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-md);
  padding: 24px;
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.feature-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* --------------------------------------------------------------------------
   2. Hire Us Section (Talent Showcase & Filters)
   -------------------------------------------------------------------------- */
.hire-controls-wrapper {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 28px;
  padding: 20px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-md);
}

.filter-group-container {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}

.filter-label {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-main);
  min-width: 120px;
}

.hire-skill-filters, .hire-academic-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 6px 14px;
  font-size: 0.875rem;
  font-weight: 600;
  border-radius: var(--radius-md);
  background-color: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-main);
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background-color: var(--bg-hover);
  color: var(--text-main);
}

.filter-btn.active {
  background-color: var(--accent-primary);
  color: var(--accent-text);
  border-color: var(--accent-primary);
}

.talent-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 24px;
}

.talent-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: border-color var(--transition-fast);
}

.talent-card:hover {
  border-color: var(--border-strong);
}

.talent-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.talent-name {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.2;
}

.talent-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--accent-primary);
  margin-top: 2px;
}

.academic-badge {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 3px 10px;
  border-radius: var(--radius-sm);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge-graduated {
  background-color: var(--badge-grad-bg);
  color: var(--badge-grad-text);
}

.badge-student {
  background-color: var(--badge-stud-bg);
  color: var(--badge-stud-text);
}

.talent-bio {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  flex: 1;
}

.talent-availability {
  font-size: 0.85rem;
  color: var(--text-subtle);
  margin-bottom: 16px;
}

.avail-label {
  font-weight: 700;
  color: var(--text-main);
}

.talent-skills-wrapper {
  margin-bottom: 20px;
}

.tech-stack-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.tech-tag {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
}

.talent-links-group {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   3. Resources Section
   -------------------------------------------------------------------------- */
.resources-controls {
  margin-bottom: 24px;
}

.search-box {
  width: 100%;
  margin-bottom: 16px;
}

.search-input {
  width: 100%;
  padding: 12px 16px;
  font-size: 1rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-strong);
  background-color: var(--bg-surface);
  color: var(--text-main);
  outline: none;
  transition: border-color var(--transition-fast);
}

.search-input:focus {
  border-color: var(--accent-primary);
}

.resource-filters {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.resources-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
}

.resource-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-md);
  padding: 24px;
  display: flex;
  flex-direction: column;
}

.resource-header {
  margin-bottom: 12px;
}

.category-badge {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 3px 10px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border-radius: var(--radius-sm);
}

.resource-title {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.resource-description {
  font-size: 0.95rem;
  color: var(--text-muted);
  flex: 1;
  margin-bottom: 16px;
  line-height: 1.5;
}

.resource-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
}

.resource-tag {
  font-size: 0.75rem;
  padding: 2px 8px;
  background-color: var(--bg-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-subtle);
}

.resource-footer {
  margin-top: auto;
}

/* --------------------------------------------------------------------------
   4. Join Us Section
   -------------------------------------------------------------------------- */
.community-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 40px;
}

.community-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
}

.community-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.community-name {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
}

.community-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 8px;
  background-color: var(--bg-subtle);
  color: var(--text-muted);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-sm);
}

.community-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.5;
}

.community-steps-wrapper {
  margin-bottom: 24px;
  background-color: var(--bg-subtle);
  padding: 16px;
  border-radius: var(--radius-md);
  flex: 1;
}

.steps-heading {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--text-main);
  margin-bottom: 10px;
}

.steps-list {
  padding-left: 20px;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.steps-list li {
  margin-bottom: 8px;
}

.steps-list li:last-child {
  margin-bottom: 0;
}

.verification-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-md);
  padding: 24px;
}

.verification-title {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.verification-text {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* --------------------------------------------------------------------------
   5. Learn More Section
   -------------------------------------------------------------------------- */
.learn-hero-box {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-lg);
  padding: 32px;
  margin-bottom: 36px;
}

.learn-heading {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 12px;
}

.mission-text {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.section-subtitle-wrapper {
  margin-bottom: 20px;
}

.sub-heading {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-main);
}

.philosophies-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 20px;
  margin-bottom: 40px;
}

.philosophy-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-md);
  padding: 24px;
}

.philosophy-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.philosophy-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.parent-feature-card {
  background-color: var(--bg-surface);
  border: 2px solid var(--accent-primary);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.umbrella-badge {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 10px;
  background-color: var(--badge-bg);
  color: var(--badge-text);
  border-radius: var(--radius-sm);
  margin-bottom: 12px;
}

.parent-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text-main);
  margin-bottom: 8px;
}

.parent-desc {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
  line-height: 1.5;
}

.btn-parent {
  display: inline-flex;
}

/* --------------------------------------------------------------------------
   Empty & Loading States
   -------------------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: 48px 24px;
  background-color: var(--bg-surface);
  border: 1px solid var(--border-main);
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-size: 1rem;
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.footer {
  margin-top: auto;
  background-color: var(--bg-surface);
  border-top: 1px solid var(--border-main);
  padding: 24px 0;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.875rem;
  color: var(--text-subtle);
}

.footer-link {
  color: var(--text-muted);
}

.footer-link:hover {
  color: var(--accent-primary);
}