/* ============================================
   Data Center Talent Platform — Styles
   datacenter.talentcaddy.ai
   ============================================ */

:root {
  --color-bg: #0f172a;
  --color-bg-elevated: #1e293b;
  --color-bg-hover: #334155;
  --color-border: #334155;
  --color-text: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-muted: #64748b;
  --color-accent: #d4af37;
  --color-accent-hover: #b8960c;
  --color-success: #22c55e;
  --color-error: #ef4444;

  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', 'Fira Code', Menlo, monospace;

  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;

  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
}

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

html {
  font-size: 15px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* Layout */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: 700px;
}

/* ============================================
   Header
   ============================================ */
.header {
  padding: var(--space-lg) 0;
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  color: var(--color-text);
  font-weight: 700;
  font-size: 1.1rem;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  border-radius: var(--radius-sm);
  font-size: 0.7rem;
  font-weight: 800;
  color: #fff;
}

.header-links {
  display: flex;
  gap: var(--space-lg);
  align-items: center;
}

.header-links a {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  transition: color 0.15s;
}

.header-links a:hover {
  color: var(--color-text);
}

/* ============================================
   Hero
   ============================================ */
.hero {
  padding: var(--space-3xl) 0;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-lg);
}

.hero h1 .accent {
  color: var(--color-accent);
}

.hero .subtitle {
  font-size: 1.2rem;
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto var(--space-xl);
  line-height: 1.5;
}

.hero-cta {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

.hero-note {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-top: var(--space-md);
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all 0.15s;
  text-decoration: none;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.btn-secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

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

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.05rem;
}

/* ============================================
   Section
   ============================================ */
.section {
  padding: var(--space-3xl) 0;
}

.section--alt {
  background: var(--color-bg-elevated);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-header h2 {
  font-size: 2rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.section-header p {
  color: var(--color-text-secondary);
  font-size: 1.05rem;
}

/* ============================================
   Steps (How it works)
   ============================================ */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
  max-width: 900px;
  margin: 0 auto;
}

.step {
  text-align: center;
  padding: var(--space-lg);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  font-weight: 800;
  font-size: 1.2rem;
  margin-bottom: var(--space-md);
}

.step h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.step p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ============================================
   Cards
   ============================================ */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
}

.card {
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
}

.card-icon {
  font-size: 1.5rem;
  margin-bottom: var(--space-md);
}

.card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: var(--space-sm);
}

.card p {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ============================================
   Form
   ============================================ */
.form-section {
  padding: var(--space-3xl) 0;
}

.form-wrapper {
  max-width: 560px;
  margin: 0 auto;
  background: var(--color-bg-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  padding: var(--space-2xl);
}

.form-wrapper h2 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: var(--space-xs);
}

.form-wrapper .form-subtitle {
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  margin-bottom: var(--space-xl);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
  color: var(--color-text);
}

.form-group .optional {
  color: var(--color-text-muted);
  font-weight: 400;
}

.form-group input[type="text"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="url"],
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: 0.9rem;
  transition: border-color 0.15s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--color-accent);
}

.form-group textarea {
  min-height: 80px;
  resize: vertical;
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  padding-right: 2rem;
}

/* Checkbox group */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.checkbox-group label {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  font-weight: 400;
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  transition: all 0.15s;
}

.checkbox-group label:hover {
  border-color: var(--color-accent);
}

.checkbox-group input[type="checkbox"] {
  accent-color: var(--color-accent);
}

.checkbox-group input[type="checkbox"]:checked + span {
  color: var(--color-text);
}

.form-submit {
  width: 100%;
  margin-top: var(--space-md);
}

/* Form success state */
.form-success {
  display: none;
  text-align: center;
  padding: var(--space-2xl) var(--space-lg);
}

.form-success .checkmark {
  font-size: 3rem;
  margin-bottom: var(--space-md);
}

.form-success h3 {
  font-size: 1.3rem;
  margin-bottom: var(--space-sm);
}

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

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: var(--space-xl) 0;
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  gap: var(--space-lg);
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  transition: color 0.15s;
}

.footer-links a:hover {
  color: var(--color-text-secondary);
}

.footer-copy {
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  html {
    font-size: 14px;
  }

  .hero {
    padding: var(--space-2xl) 0;
  }

  .hero h1 {
    font-size: 2.2rem;
  }

  .hero .subtitle {
    font-size: 1.05rem;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: var(--space-md);
  }

  .cards {
    grid-template-columns: 1fr;
  }

  .header-inner {
    flex-direction: column;
    gap: var(--space-md);
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }

  .form-wrapper {
    padding: var(--space-lg);
  }
}