:root {
  --navy: #0B1F3A;
  --navy-light: #122a4d;
  --teal: #14B8A6;
  --teal-dark: #0d9488;
  --sky: #38BDF8;
  --bg: #F8FAFC;
  --card-bg: #FFFFFF;
  --text: #1E293B;
  --text-muted: #64748B;
  --border: #E2E8F0;
  --danger: #EF4444;
  --success: #22C55E;
  --radius: 14px;
  --shadow: 0 4px 20px rgba(11, 31, 58, 0.08);
  --shadow-lg: 0 12px 36px rgba(11, 31, 58, 0.14);
}

* { box-sizing: border-box; }

body.cv-theme {
  margin: 0;
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.cv-nav {
  background: var(--navy);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 24px;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 500;
  box-shadow: 0 2px 12px rgba(0,0,0,0.15);
}
.cv-nav .cv-logo { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.2rem; letter-spacing: 0.3px; margin-right: auto; text-decoration: none; }
.cv-nav .cv-logo img {
  height: 52px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: transform 0.25s;
}
.cv-nav .cv-logo {
  padding: 4px 8px;
  border-radius: 10px;
  border: 2px solid transparent;
  transition: border 0.25s, box-shadow 0.25s, transform 0.25s;
  display: inline-flex;
  align-items: center;
}
.cv-nav .cv-logo:hover {
  border: 2px solid #14B8A6;
  box-shadow: 0 0 10px #14B8A6, 0 0 24px rgba(20,184,166,0.6);
  transform: scale(1.05);
}
.cv-nav-links { display: flex; align-items: center; gap: 22px; }
.cv-nav-links a { color: #cbd5e1; text-decoration: none; font-weight: 500; font-size: 0.95rem; transition: color .15s; }
.cv-nav-links a:hover { color: #fff; }
.cv-nav-links a.cv-btn-primary { color: #fff; }
.cv-nav-toggle { display: none; background: none; border: none; color: #fff; font-size: 1.4rem; cursor: pointer; }

.cv-btn {
  display: inline-block;
  padding: 11px 22px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform .15s, box-shadow .15s, background .15s;
}
.cv-btn-primary { background: var(--teal); color: #fff; }
.cv-btn-primary:hover { background: var(--teal-dark); transform: translateY(-1px); }
.cv-btn-outline { background: transparent; color: #fff; border: 1.5px solid rgba(255,255,255,0.4); }
.cv-btn-outline:hover { border-color: #fff; }
.cv-btn-block { width: 100%; text-align: center; }

.cv-hero {
  background: linear-gradient(135deg, var(--navy) 0%, var(--navy-light) 60%, #103a5c 100%);
  color: #fff;
  padding: 80px 24px 100px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cv-hero h1 { font-size: 2.6rem; font-weight: 800; margin: 0 0 16px; line-height: 1.2; }
.cv-hero h1 span { color: var(--sky); }
.cv-hero p { font-size: 1.15rem; color: #cbd5e1; max-width: 600px; margin: 0 auto 32px; }
.cv-hero .cv-hero-actions { display: flex; gap: 16px; justify-content: center; flex-wrap: wrap; }

.cv-section { max-width: 1100px; margin: 0 auto; padding: 60px 24px; }
.cv-section-title { text-align: center; font-size: 2rem; font-weight: 800; color: var(--navy); margin-bottom: 8px; }
.cv-section-subtitle { text-align: center; color: var(--text-muted); margin-bottom: 40px; font-size: 1.05rem; }

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

.cv-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 28px 24px;
  border: 1px solid var(--border);
  transition: transform .2s, box-shadow .2s;
}
.cv-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); }

.cv-course-card {
  text-align: center;
  position: relative;
  display: flex;
  flex-direction: column;
  height: 100%;
  padding-top: 32px;
  overflow: hidden;
  border-top: 4px solid var(--teal);
}
.cv-course-card.cv-tier-cert { border-top-color: var(--navy); }
.cv-course-card .cv-badge {
  position: absolute; top: 16px; right: 16px;
  display: inline-block; background: var(--teal); color: #fff; font-size: 0.7rem;
  font-weight: 700; padding: 4px 11px; border-radius: 999px; letter-spacing: 0.5px;
}
.cv-course-card.cv-tier-cert .cv-badge { background: var(--navy); }
.cv-course-card .cv-icon {
  width: 56px; height: 56px; margin: 0 auto 16px;
  display: flex; align-items: center; justify-content: center;
  border-radius: 50%; background: rgba(20, 184, 166, 0.12);
  font-size: 1.6rem; color: var(--teal);
}
.cv-course-card.cv-tier-cert .cv-icon { background: rgba(11, 31, 58, 0.08); color: var(--navy); }
.cv-course-card h3 { font-size: 1.15rem; margin: 0 0 6px; color: var(--navy); min-height: 2.6em; display: flex; align-items: center; justify-content: center; }
.cv-course-card .cv-price { font-size: 1.7rem; font-weight: 800; color: var(--navy); margin: 4px 0 10px; }
.cv-course-card .cv-price span { font-size: 0.9rem; color: var(--text-muted); font-weight: 500; }
.cv-course-card p { color: var(--text-muted); font-size: 0.92rem; flex-grow: 1; margin-bottom: 18px; }
.cv-course-card .cv-btn { margin-top: auto; }

.cv-auth-wrap { display: flex; align-items: center; justify-content: center; min-height: calc(100vh - 70px); padding: 40px 16px; }
.cv-auth-card { background: var(--card-bg); border-radius: var(--radius); box-shadow: var(--shadow-lg); padding: 40px 36px; max-width: 440px; width: 100%; }
.cv-auth-card h2 { color: var(--navy); margin: 0 0 6px; font-size: 1.6rem; }
.cv-auth-card .cv-auth-sub { color: var(--text-muted); margin-bottom: 24px; font-size: 0.95rem; }

.cv-field { margin-bottom: 16px; }
.cv-field label { display: block; font-weight: 600; font-size: 0.9rem; margin-bottom: 6px; color: var(--text); }
.cv-field input, .cv-field select {
  width: 100%; padding: 11px 14px; border-radius: 8px; border: 1.5px solid var(--border);
  font-size: 0.97rem; background: #fff; transition: border-color .15s;
}
.cv-field input:focus, .cv-field select:focus { outline: none; border-color: var(--teal); }
.cv-error-msg { color: var(--danger); font-size: 0.82rem; margin-top: 4px; min-height: 1em; }
.cv-success-box { background: #ECFDF5; border: 1px solid #A7F3D0; color: #047857; padding: 14px 18px; border-radius: 10px; margin-bottom: 16px; font-weight: 600; }
.cv-error-box { background: #FEF2F2; border: 1px solid #FECACA; color: #B91C1C; padding: 14px 18px; border-radius: 10px; margin-bottom: 16px; font-weight: 600; }

.cv-footer { background: var(--navy); color: #94A3B8; text-align: center; padding: 28px 16px; font-size: 0.9rem; }
.cv-footer a { color: #cbd5e1; }

@media (max-width: 768px) {
  .cv-nav-links { position: absolute; top: 100%; left: 0; right: 0; background: var(--navy); flex-direction: column; padding: 16px 24px; gap: 14px; display: none; }
  .cv-nav-links.cv-open { display: flex; }
  .cv-nav-toggle { display: block; }
  .cv-hero h1 { font-size: 2rem; }
  .cv-hero { padding: 56px 20px 70px; }
  .cv-auth-card { padding: 28px 22px; }
}