:root {
  --color-bg-primary: #0b0c10;
  --color-bg-secondary: #111827;
  --color-bg-tertiary: #1f2937;
  --color-text-primary: #f7f7f7;
  --color-text-secondary: #9ca3af;
  --color-accent: #3b82f6;
  --color-muted: #64748b;
  --color-border: #1f2933;
  --color-received: #10b981;
  --color-in-progress: #fbbf24;
  --color-answered: #3b82f6;
  --color-urgent: #f97316;
  --max-width: 1100px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --shadow-soft: 0 16px 40px rgba(15, 23, 42, 0.25);
  --shadow-card: 0 10px 30px rgba(8, 12, 20, 0.35);
  --gradient-hero: linear-gradient(135deg, rgba(59, 130, 246, 0.35), rgba(249, 115, 22, 0.2));
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--color-bg-primary);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
}

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

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

header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(11, 12, 16, 0.85);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
}

nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 0;
}

.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

nav ul {
  display: flex;
  gap: 24px;
  list-style: none;
  align-items: center;
}

nav a {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

nav a:hover,
nav a:focus {
  color: var(--color-text-primary);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: 999px;
  border: none;
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.button-primary {
  background: var(--color-accent);
  color: #fff;
  box-shadow: 0 18px 32px rgba(59, 130, 246, 0.35);
}

.button-primary:hover,
.button-primary:focus {
  transform: translateY(-1px);
  box-shadow: 0 24px 40px rgba(59, 130, 246, 0.4);
}

.button-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid rgba(148, 163, 184, 0.3);
}

.hero {
  padding: 140px 0 120px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 80px 10% auto;
  height: 60%;
  background: var(--gradient-hero);
  filter: blur(120px);
  opacity: 0.7;
  z-index: -1;
}

.hero-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 64px;
  align-items: center;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}

.hero p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
  margin-bottom: 32px;
}

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

.mock-card {
  background: rgba(17, 24, 39, 0.85);
  border: 1px solid rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-card);
}

.mock-card h3 {
  font-size: 1rem;
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 12px;
}

.mock-item {
  padding: 18px;
  border-radius: 10px;
  background: rgba(15, 23, 42, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.12);
  margin-bottom: 16px;
}

.mock-item strong {
  display: block;
  color: var(--color-text-primary);
  margin-bottom: 6px;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.badge-fast {
  background: rgba(16, 185, 129, 0.12);
  color: #5eead4;
}

.section {
  padding: 96px 0;
}

.section h2 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  margin-bottom: 32px;
}

.section p.section-intro {
  color: var(--color-text-secondary);
  max-width: 640px;
  margin-bottom: 48px;
}

.steps-grid,
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 32px;
}

.step-card,
.feature-card {
  background: rgba(17, 24, 39, 0.65);
  border: 1px solid rgba(148, 163, 184, 0.1);
  padding: 24px;
  border-radius: var(--radius-md);
  transition: transform 0.2s ease, border 0.2s ease;
}

.step-card:hover,
.feature-card:hover {
  transform: translateY(-4px);
  border-color: rgba(59, 130, 246, 0.35);
}

.step-card h3,
.feature-card h3 {
  font-size: 1.1rem;
  margin-bottom: 12px;
}

.step-number {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 12px;
}

.uses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.use-card {
  background: rgba(15, 23, 42, 0.75);
  border: 1px solid rgba(148, 163, 184, 0.1);
  border-radius: var(--radius-md);
  padding: 20px;
}

.use-card span {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.pricing-panel {
  background: rgba(17, 24, 39, 0.8);
  border-radius: var(--radius-lg);
  padding: 32px;
  border: 1px solid rgba(59, 130, 246, 0.2);
  display: grid;
  gap: 16px;
  box-shadow: var(--shadow-card);
}

.pricing-panel strong {
  font-size: 1.5rem;
}

.footer {
  border-top: 1px solid rgba(148, 163, 184, 0.15);
  padding: 32px 0;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
}

.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.form-page {
  padding: 140px 0 100px;
}

.form-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.8fr);
  gap: 40px;
}

.form-card,
.summary-card,
.dashboard-card,
.table-card {
  background: rgba(17, 24, 39, 0.8);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: var(--radius-lg);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.form-card h1 {
  font-size: 2rem;
  margin-bottom: 24px;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 20px;
}

label {
  font-weight: 600;
  color: var(--color-text-primary);
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea,
select {
  padding: 14px 16px;
  border-radius: 10px;
  border: 1px solid rgba(148, 163, 184, 0.25);
  background: rgba(8, 12, 20, 0.85);
  color: var(--color-text-primary);
  font-size: 1rem;
  transition: border 0.2s ease, box-shadow 0.2s ease;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: rgba(59, 130, 246, 0.6);
  box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.15);
}

textarea {
  min-height: 160px;
  resize: vertical;
}

.helper-text {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.radio-group {
  display: grid;
  gap: 16px;
}

.radio-option {
  border: 1px solid rgba(148, 163, 184, 0.25);
  border-radius: 12px;
  padding: 16px;
  display: flex;
  align-items: center;
  gap: 16px;
  background: rgba(8, 12, 20, 0.8);
}

.radio-option input {
  transform: scale(1.2);
}

.summary-card {
  display: grid;
  gap: 12px;
  align-content: start;
}

.summary-card h2 {
  font-size: 1.4rem;
}

.summary-line {
  display: flex;
  justify-content: space-between;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.confirmation-card {
  text-align: center;
  padding: 80px 48px;
  max-width: 560px;
  margin: 0 auto;
}

.confirmation-card h1 {
  font-size: 2.2rem;
  margin-bottom: 16px;
}

.confirmation-card p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.tabs {
  display: flex;
  gap: 12px;
}

.tab {
  padding: 10px 20px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  cursor: pointer;
  font-weight: 600;
  background: transparent;
  color: var(--color-text-secondary);
}

.tab.active {
  background: rgba(59, 130, 246, 0.15);
  border-color: rgba(59, 130, 246, 0.4);
  color: var(--color-text-primary);
}

.question-list {
  display: grid;
  gap: 20px;
}

.question-card {
  background: rgba(8, 12, 20, 0.85);
  border: 1px solid rgba(148, 163, 184, 0.12);
  border-radius: var(--radius-md);
  padding: 20px;
  display: grid;
  gap: 12px;
}

.question-card h3 {
  font-size: 1.1rem;
}

.meta-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
}

.status-received {
  background: rgba(16, 185, 129, 0.12);
  color: #34d399;
}

.status-in-progress {
  background: rgba(251, 191, 36, 0.15);
  color: #fbbf24;
}

.status-answered {
  background: rgba(59, 130, 246, 0.15);
  color: #60a5fa;
}

.status-urgent {
  background: rgba(249, 115, 22, 0.15);
  color: #fb923c;
}

.detail-layout {
  display: grid;
  gap: 32px;
}

.detail-card {
  background: rgba(8, 12, 20, 0.85);
  border-radius: var(--radius-lg);
  border: 1px solid rgba(148, 163, 184, 0.15);
  padding: 32px;
  display: grid;
  gap: 16px;
}

.detail-card h2 {
  font-size: 1.4rem;
}

.answer-section h3 {
  font-size: 1.2rem;
  margin-top: 16px;
}

.answer-section pre {
  background: rgba(17, 24, 39, 0.9);
  padding: 16px;
  border-radius: 12px;
  overflow-x: auto;
  font-family: 'Space Mono', monospace;
}

.table-card table {
  width: 100%;
  border-collapse: collapse;
}

.table-card th,
.table-card td {
  text-align: left;
  padding: 16px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.1);
}

.table-card th {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
}

.table-card tbody tr:hover {
  background: rgba(59, 130, 246, 0.08);
  cursor: pointer;
}

.admin-layout {
  display: grid;
  gap: 32px;
}

.answer-editor {
  display: grid;
  gap: 16px;
}

.answer-editor textarea {
  min-height: 220px;
}

@media (max-width: 900px) {
  .form-layout {
    grid-template-columns: 1fr;
  }

  nav ul {
    gap: 16px;
  }

  header {
    position: static;
  }

  .dashboard-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  .hero {
    padding-top: 100px;
  }
}

@media (max-width: 640px) {
  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .section {
    padding: 72px 0;
  }

  .confirmation-card {
    padding: 64px 32px;
  }
}