/* ==============================================================================
   NIELIT & TASHTECH: VLSI Foundation Training — Admin Analytics Portal
   Design: Modern Clean Semiconductor & High-Tech Editorial
   ============================================================================== */

@import url('https://fonts.googleapis.com/css2?family=DM+Sans:ital,opsz,wght@0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  --bg-main: #0B0F19;
  --bg-card: rgba(17, 24, 39, 0.85);
  --bg-card-hover: rgba(24, 33, 53, 0.95);
  --bg-input: #070B13;
  --bg-accent-subtle: rgba(255, 94, 20, 0.1);

  --accent-orange: #FF5E14;
  --accent-orange-light: #FF8542;
  --accent-cyan: #00F0FF;
  --accent-blue: #38BDF8;
  --accent-green: #10B981;
  --accent-purple: #A855F7;

  --text-main: #F9FAFB;
  --text-muted: #9CA3AF;
  --text-dim: #6B7280;

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(255, 94, 20, 0.6);

  --font-main: 'DM Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 20px;
  --radius-full: 9999px;
}

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-main);
  color: var(--text-main);
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  background-image: 
    radial-gradient(ellipse at 80% 0%, rgba(255, 94, 20, 0.08), transparent 50%),
    radial-gradient(ellipse at 10% 100%, rgba(0, 240, 255, 0.06), transparent 50%),
    linear-gradient(rgba(255, 255, 255, 0.015) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.015) 1px, transparent 1px);
  background-size: auto, auto, 48px 48px, 48px 48px;
}

/* ==============================================================================
   1. PASSWORD LOGIN GATE
   ============================================================================== */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.login-card {
  width: 100%;
  max-width: 440px;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  backdrop-filter: blur(20px);
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.6), 0 0 40px rgba(255, 94, 20, 0.08);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.login-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-orange), var(--accent-cyan));
}

.login-brand {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 24px;
}

.tt-badge {
  background: linear-gradient(135deg, var(--accent-orange), #C0390B);
  color: #FFF;
  font-weight: 800;
  font-size: 1.1rem;
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  letter-spacing: 0.5px;
}

.login-brand-text {
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.5px;
}

.login-card h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.login-card p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 28px;
}

.login-input-group {
  margin-bottom: 20px;
  text-align: left;
}

.login-input-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 8px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.password-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.password-input-wrap input {
  width: 100%;
  background: var(--bg-input);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  color: var(--text-main);
  font-size: 1.1rem;
  font-family: var(--font-mono);
  outline: none;
  transition: all 0.2s ease;
  letter-spacing: 2px;
}

.password-input-wrap input:focus {
  border-color: var(--accent-orange);
  box-shadow: 0 0 0 3px rgba(255, 94, 20, 0.2);
}

.btn-login {
  width: 100%;
  padding: 14px;
  background: linear-gradient(135deg, var(--accent-orange), #E04E0C);
  color: #FFF;
  font-weight: 600;
  font-size: 1rem;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 16px rgba(255, 94, 20, 0.3);
}

.btn-login:hover {
  background: linear-gradient(135deg, #FF7230, var(--accent-orange));
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(255, 94, 20, 0.45);
}

.login-error {
  color: #EF4444;
  font-size: 0.85rem;
  margin-top: 14px;
  display: none;
  animation: shake 0.3s ease;
}

.login-footer-hint {
  margin-top: 24px;
  font-size: 0.8rem;
  color: var(--text-dim);
}

.login-footer-hint a {
  color: var(--accent-cyan);
  text-decoration: none;
}

/* ==============================================================================
   2. MAIN ADMIN DASHBOARD
   ============================================================================== */
.dashboard-wrapper {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* Header */
.dash-header {
  background: rgba(11, 15, 25, 0.88);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  position: sticky;
  top: 0;
  z-index: 50;
  padding: 16px 32px;
}

.dash-header-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.dash-brand {
  display: flex;
  align-items: center;
  gap: 14px;
}

.dash-brand-title {
  font-size: 1.15rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.dash-tag {
  background: var(--bg-accent-subtle);
  color: var(--accent-orange);
  font-size: 0.72rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 94, 20, 0.25);
  font-family: var(--font-mono);
}

.dash-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Dashboard Tabs */
.dash-nav-tabs {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 32px;
  display: flex;
  gap: 8px;
  border-bottom: 1px solid var(--border-subtle);
}

.nav-tab-btn {
  background: transparent;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-main);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 16px 20px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
}

.nav-tab-btn:hover {
  color: var(--text-main);
}

.nav-tab-btn.active {
  color: var(--accent-orange);
  border-bottom-color: var(--accent-orange);
}

.tab-badge {
  background: rgba(255, 255, 255, 0.1);
  color: var(--text-main);
  font-size: 0.75rem;
  padding: 2px 7px;
  border-radius: var(--radius-full);
}

.nav-tab-btn.active .tab-badge {
  background: var(--accent-orange);
  color: #FFF;
}

/* Dashboard Main Content */
.dash-content {
  flex: 1;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 32px;
}

.dash-pane {
  display: none;
  animation: fadeIn 0.25s ease;
}

.dash-pane.active {
  display: block;
}

/* ==============================================================================
   3. KPI METRIC CARDS
   ============================================================================== */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.kpi-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 22px 24px;
  backdrop-filter: blur(12px);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.kpi-card:hover {
  transform: translateY(-2px);
  border-color: rgba(255, 255, 255, 0.16);
}

.kpi-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 10px;
}

.kpi-label {
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.kpi-icon {
  font-size: 1.25rem;
}

.kpi-value {
  font-family: var(--font-mono);
  font-size: 2.1rem;
  font-weight: 800;
  color: var(--text-main);
  line-height: 1.1;
  margin-bottom: 6px;
}

.kpi-value.small {
  font-size: 1.25rem;
  line-height: 1.3;
}

.kpi-sub {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.kpi-sub.highlight {
  color: var(--accent-green);
  font-weight: 600;
}

/* ==============================================================================
   4. DETAILED ANALYTICS SECTIONS & BARS
   ============================================================================== */
.analytics-grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.chart-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 28px;
  backdrop-filter: blur(12px);
}

.chart-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 6px;
}

.chart-subtitle {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 22px;
}

.chart-bars-list {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.chart-bar-item {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.chart-bar-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.85rem;
}

.chart-bar-title {
  color: var(--text-main);
  font-weight: 500;
}

.chart-bar-num {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--text-muted);
}

.chart-bar-track {
  width: 100%;
  height: 9px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.chart-bar-fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width 0.6s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Institution Tags Cloud */
.institutions-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.inst-tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-subtle);
  padding: 6px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  display: flex;
  align-items: center;
  gap: 8px;
}

.inst-tag strong {
  color: var(--accent-orange);
  font-family: var(--font-mono);
}

/* ==============================================================================
   5. SUBMISSIONS TABLE
   ============================================================================== */
.table-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.search-box {
  flex: 1;
  min-width: 280px;
  position: relative;
}

.search-box input {
  width: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 12px 18px;
  color: var(--text-main);
  font-size: 0.9rem;
  outline: none;
}

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

.filter-selects {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.filter-selects select {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 11px 16px;
  color: var(--text-main);
  font-size: 0.85rem;
  outline: none;
  cursor: pointer;
}

.table-container {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  overflow-x: auto;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.88rem;
}

.data-table th {
  background: #0E1424;
  color: var(--text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  padding: 14px 18px;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 18px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  color: var(--text-main);
  white-space: nowrap;
}

.data-table tr:hover td {
  background: rgba(255, 255, 255, 0.025);
}

.td-id {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--accent-orange);
  background: var(--bg-accent-subtle);
  padding: 2px 7px;
  border-radius: 4px;
}

.td-name strong {
  font-size: 0.92rem;
  color: #FFF;
}

.td-telegram a {
  color: var(--accent-cyan);
  text-decoration: none;
  font-family: var(--font-mono);
}

.td-telegram a:hover {
  text-decoration: underline;
}

.badge-pill {
  font-size: 0.75rem;
  padding: 3px 9px;
  border-radius: var(--radius-full);
  font-weight: 500;
}

.badge-time {
  background: rgba(56, 189, 248, 0.12);
  color: #38BDF8;
  border: 1px solid rgba(56, 189, 248, 0.25);
}

.empty-state {
  text-align: center;
  padding: 60px 20px;
  color: var(--text-muted);
}

/* ==============================================================================
   6. APPLICANT QUESTIONS INBOX (TAB 3)
   ============================================================================== */
.questions-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(360px, 1fr));
  gap: 20px;
}

.question-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.question-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 14px;
}

.q-sender-name {
  font-weight: 700;
  font-size: 1rem;
}

.q-sender-meta {
  font-size: 0.78rem;
  color: var(--text-dim);
}

.q-text-body {
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.05);
  border-radius: var(--radius-md);
  padding: 16px;
  font-size: 0.9rem;
  color: var(--text-main);
  line-height: 1.6;
  margin-bottom: 18px;
  flex: 1;
}

.question-card-footer {
  display: flex;
  gap: 10px;
}

/* ==============================================================================
   7. CANDIDATE DOSSIER MODAL
   ============================================================================== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(3, 7, 18, 0.85);
  backdrop-filter: blur(14px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}

.dossier-modal {
  background: #0E1526;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-xl);
  width: 100%;
  max-width: 780px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.8);
}

.dossier-header {
  padding: 24px 30px;
  background: #131B30;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.dossier-body {
  padding: 30px;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.dossier-section {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.dossier-section-title {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent-orange);
}

.dossier-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 14px;
}

.dossier-item {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
}

.dossier-item-label {
  font-size: 0.72rem;
  color: var(--text-muted);
  text-transform: uppercase;
}

.dossier-item-val {
  font-weight: 600;
  font-size: 0.95rem;
  color: #FFF;
  margin-top: 2px;
}

.dossier-item-val a {
  color: var(--accent-cyan);
  text-decoration: none;
}

.dossier-text-block {
  background: rgba(0, 0, 0, 0.3);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 16px 20px;
  font-size: 0.92rem;
  color: var(--text-main);
  line-height: 1.6;
}

/* ==============================================================================
   8. BUTTONS & UTILITIES
   ============================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-md);
  font-family: var(--font-main);
  font-size: 0.88rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1;
}

.btn-sm {
  padding: 8px 14px;
  font-size: 0.82rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-orange), #E04E0C);
  color: #FFF;
  box-shadow: 0 4px 14px rgba(255, 94, 20, 0.3);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #FF7230, var(--accent-orange));
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--accent-orange);
  color: var(--accent-orange-light);
  background: var(--bg-accent-subtle);
}

.btn-danger-outline {
  background: transparent;
  border: 1px solid rgba(239, 68, 68, 0.3);
  color: #EF4444;
}

.btn-danger-outline:hover {
  background: rgba(239, 68, 68, 0.12);
}

.close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  padding: 4px;
}

.close-btn:hover {
  color: #FFF;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

/* Responsive */
@media (max-width: 992px) {
  .analytics-grid-2col {
    grid-template-columns: 1fr;
  }
  .dossier-grid {
    grid-template-columns: 1fr;
  }
  .dash-header-inner {
    flex-direction: column;
    align-items: flex-start;
  }
}