/* ==============================================
   ForexVN — Cổng thông tin Forex Việt Nam
   Chủ đề tối — Dark theme
   ============================================== */

:root {
  --color-primary:       #0c0e1d;
  --color-primary-light: #131528;
  --color-card:          #1a1833;
  --color-card-hover:    #211f36;
  --color-accent:        #51faaa;
  --color-accent-hover:  #3de898;
  --color-accent-glow:   rgba(81,250,170,0.28);
  --color-accent2:       #ff81ff;
  --color-accent2-glow:  rgba(255,129,255,0.22);
  --color-mid:           #616083;
  --color-success:       #51faaa;
  --color-danger:        #ff5f7e;
  --color-text:          #dde1f5;
  --color-text-muted:    #8087a8;
  --color-border:        rgba(97,96,131,0.35);
  --color-bg:            #0c0e1d;
  --color-bg-alt:        #131528;
  --color-card-bg:       #1a1833;
  --font-sans:           -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --radius:              14px;
  --radius-sm:           8px;
  --shadow:              0 2px 18px rgba(0,0,0,0.45);
  --shadow-lg:           0 8px 40px rgba(0,0,0,0.6);
  --transition:          0.22s ease;
  --max-width:           1160px;
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-sans); color: var(--color-text); background: var(--color-bg); line-height: 1.7; }
img { max-width: 100%; display: block; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-hover); }
ul { list-style: none; }

/* ---- Typography ---- */
h1, h2, h3, h4, h5 { font-weight: 700; line-height: 1.25; color: #fff; }
h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); }
h2 { font-size: clamp(1.4rem, 3vw, 2.1rem); }
h3 { font-size: clamp(1.05rem, 2.5vw, 1.4rem); }
h4 { font-size: 1.05rem; }
p { margin-bottom: 1rem; }
p:last-child { margin-bottom: 0; }

/* ---- Layout ---- */
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 1.25rem; }
.section { padding: 4.5rem 0; }
.section-alt { background: var(--color-bg-alt); }
.section-label {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--color-accent);
  background: rgba(81,250,170,0.08); border: 1px solid rgba(81,250,170,0.2);
  padding: 0.25rem 0.85rem; border-radius: 20px;
  margin-bottom: 1rem;
}
.section-label::before {
  content: ''; display: inline-block;
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 8px var(--color-accent);
}
.section-heading { margin-bottom: 0.75rem; }
.section-subheading { color: var(--color-text-muted); max-width: 600px; margin-bottom: 2.5rem; font-size: 1rem; line-height: 1.7; }
.text-center { text-align: center; }
.text-center .section-subheading { margin-left: auto; margin-right: auto; }

/* ---- Buttons ---- */
.btn {
  display: inline-block;
  padding: 0.68rem 1.4rem;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: background var(--transition), color var(--transition), box-shadow var(--transition), transform var(--transition);
  text-align: center;
  border: 2px solid transparent;
}
.btn-primary {
  background: var(--color-accent);
  color: #0c0e1d;
  box-shadow: 0 0 18px var(--color-accent-glow);
}
.btn-primary:hover {
  background: var(--color-accent-hover);
  color: #0c0e1d;
  box-shadow: 0 0 28px var(--color-accent-glow);
  transform: translateY(-1px);
}
.btn-outline {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: transparent;
}
.btn-outline:hover {
  background: var(--color-accent);
  color: #0c0e1d;
  box-shadow: 0 0 18px var(--color-accent-glow);
}
.btn-lg { padding: 0.85rem 2rem; font-size: 1.05rem; }
.btn-pink {
  background: var(--color-accent2);
  color: #0c0e1d;
  box-shadow: 0 0 18px var(--color-accent2-glow);
}
.btn-pink:hover {
  background: #e96fe9;
  color: #0c0e1d;
}

/* ---- Header ---- */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(12,14,29,0.92);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max-width); margin: 0 auto;
  padding: 0.9rem 1.25rem;
}
.site-logo {
  font-size: 1.55rem; font-weight: 800;
  color: #fff; letter-spacing: -0.02em;
}
.site-logo span { color: var(--color-accent); }
.nav-links {
  display: flex; align-items: center; gap: 1.75rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.93rem; font-weight: 500;
  color: var(--color-text-muted);
  transition: color var(--transition);
}
.nav-links a:hover { color: var(--color-accent); }
.nav-toggle {
  display: none; background: none; border: none; cursor: pointer;
  flex-direction: column; gap: 5px; padding: 4px;
}
.nav-toggle span {
  display: block; width: 24px; height: 2px;
  background: var(--color-text); border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ---- Promo Banner ---- */
.promo-banner {
  background: linear-gradient(90deg, rgba(81,250,170,0.12) 0%, rgba(255,129,255,0.08) 100%);
  border-bottom: 1px solid rgba(81,250,170,0.18);
  padding: 0.6rem 1.25rem;
  text-align: center;
}
.promo-banner-inner {
  display: flex; align-items: center; justify-content: center;
  gap: 0.75rem; flex-wrap: wrap;
  max-width: var(--max-width); margin: 0 auto;
  font-size: 0.88rem;
}
.promo-badge {
  background: var(--color-accent); color: #0c0e1d;
  font-size: 0.7rem; font-weight: 800;
  padding: 0.18rem 0.55rem; border-radius: 4px;
  letter-spacing: 0.06em;
}
.promo-banner strong { color: #fff; }
.promo-banner span { color: var(--color-text-muted); }
.promo-btn {
  background: var(--color-accent); color: #0c0e1d;
  padding: 0.28rem 0.85rem; border-radius: 6px;
  font-size: 0.8rem; font-weight: 700;
  transition: background var(--transition), box-shadow var(--transition);
}
.promo-btn:hover { background: var(--color-accent-hover); color: #0c0e1d; box-shadow: 0 0 14px var(--color-accent-glow); }

/* ---- Hero Section ---- */
.site-hero {
  position: relative; overflow: hidden;
  padding: 5rem 0 4rem;
  background: linear-gradient(135deg, #0c0e1d 0%, #1a1045 50%, #0c1a2e 100%);
  border-bottom: 1px solid var(--color-border);
}
.site-hero::before {
  content: '';
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 60% at 60% 40%, rgba(81,250,170,0.07) 0%, transparent 70%),
              radial-gradient(ellipse 60% 50% at 20% 60%, rgba(255,129,255,0.06) 0%, transparent 60%);
  pointer-events: none;
}
#particle-canvas {
  position: absolute; inset: 0; width: 100%; height: 100%;
  pointer-events: none; opacity: 0.55;
}
.hero-inner {
  position: relative; z-index: 1;
  max-width: var(--max-width); margin: 0 auto;
  padding: 0 1.25rem;
  display: flex; flex-direction: column; align-items: flex-start; gap: 1.5rem;
}
.hero-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  background: rgba(81,250,170,0.1); border: 1px solid rgba(81,250,170,0.25);
  color: var(--color-accent); font-size: 0.75rem; font-weight: 700;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.3rem 1rem; border-radius: 20px;
}
.hero-badge::before {
  content: ''; width: 7px; height: 7px; border-radius: 50%;
  background: var(--color-accent); box-shadow: 0 0 8px var(--color-accent);
}
.hero-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  line-height: 1.15; font-weight: 800;
  color: #fff; max-width: 720px;
}
.hero-title .accent { color: var(--color-accent); }
.hero-title .accent2 { color: var(--color-accent2); }
.hero-subtitle {
  color: var(--color-text-muted); font-size: 1.05rem;
  max-width: 560px; line-height: 1.75;
}
.hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; }
.hero-stats {
  display: flex; gap: 2.5rem; flex-wrap: wrap;
  padding-top: 0.5rem;
}
.stat-item { display: flex; flex-direction: column; gap: 0.15rem; }
.stat-num {
  font-size: 2rem; font-weight: 800; color: #fff;
  line-height: 1;
}
.stat-num span { color: var(--color-accent); }
.stat-label { font-size: 0.78rem; color: var(--color-text-muted); text-transform: uppercase; letter-spacing: 0.06em; }

/* ---- Top Brokers Grid ---- */
.top-brokers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(330px, 1fr));
  gap: 1.5rem;
}
.broker-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex; flex-direction: column; gap: 1rem;
}
.broker-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(81,250,170,0.3);
}
.broker-card.featured {
  border-color: rgba(81,250,170,0.4);
  background: linear-gradient(135deg, #1a1833, #1f1d3a);
  box-shadow: 0 0 30px rgba(81,250,170,0.08);
}
.broker-card-header {
  display: flex; justify-content: space-between; align-items: flex-start;
}
.broker-rank {
  font-size: 0.72rem; font-weight: 700; letter-spacing: 0.08em;
  color: var(--color-accent); text-transform: uppercase;
  background: rgba(81,250,170,0.1); border: 1px solid rgba(81,250,170,0.2);
  padding: 0.18rem 0.6rem; border-radius: 4px;
}
.broker-rank.top { background: rgba(255,129,255,0.1); border-color: rgba(255,129,255,0.25); color: var(--color-accent2); }
.broker-name { font-size: 1.25rem; font-weight: 800; color: #fff; }
.broker-stars { color: var(--color-accent); font-size: 1rem; letter-spacing: 0.05em; }
.broker-score { font-size: 0.85rem; color: var(--color-text-muted); }
.broker-desc { color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.6; flex: 1; }
.broker-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; }
.broker-tags span {
  background: rgba(97,96,131,0.2); border: 1px solid var(--color-border);
  color: var(--color-text-muted); font-size: 0.75rem;
  padding: 0.2rem 0.6rem; border-radius: 4px;
}
.broker-card-footer { display: flex; gap: 0.75rem; }
.broker-card-footer .btn { flex: 1; font-size: 0.88rem; padding: 0.6rem 1rem; }

/* ---- Broker List (brokers.html) ---- */
.broker-list { display: flex; flex-direction: column; gap: 1rem; }
.broker-list-item {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex; align-items: center; gap: 1.25rem;
  transition: transform var(--transition), border-color var(--transition), box-shadow var(--transition);
}
.broker-list-item:hover {
  transform: translateY(-2px);
  border-color: rgba(81,250,170,0.28);
  box-shadow: var(--shadow);
}
.broker-list-num {
  font-size: 1.3rem; font-weight: 800;
  color: var(--color-accent); min-width: 2.2rem;
  text-align: center; opacity: 0.7;
}
.broker-list-body { flex: 1; min-width: 0; }
.broker-list-body h3 { font-size: 1.05rem; margin-bottom: 0.2rem; color: #fff; }
.broker-list-rating { font-size: 0.85rem; color: var(--color-accent); margin-bottom: 0.3rem; }
.broker-list-rating span { color: var(--color-text-muted); }
.broker-list-body p { font-size: 0.88rem; color: var(--color-text-muted); margin: 0 0 0.5rem; line-height: 1.5; }
.broker-list-tags { display: flex; flex-wrap: wrap; gap: 0.35rem; }
.broker-list-tags span {
  background: rgba(97,96,131,0.18); border: 1px solid var(--color-border);
  color: var(--color-text-muted); font-size: 0.72rem;
  padding: 0.15rem 0.55rem; border-radius: 4px;
}

/* ---- Review Layout ---- */
.review-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 2rem;
  align-items: start;
}
.review-section {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 2rem;
  margin-bottom: 1.5rem;
}
.review-section h2 {
  font-size: 1.3rem; margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--color-border);
  color: #fff;
}
.review-section p, .review-section li { color: var(--color-text); font-size: 0.95rem; line-height: 1.75; }
.review-section ul { padding-left: 1.2rem; list-style: disc; }
.review-section ul li { margin-bottom: 0.4rem; }

.review-hero-meta {
  display: flex; flex-wrap: wrap; gap: 0.75rem;
  margin: 1rem 0 1.75rem;
}
.meta-badge {
  display: inline-flex; align-items: center; gap: 0.4rem;
  background: rgba(97,96,131,0.18); border: 1px solid var(--color-border);
  color: var(--color-text-muted); font-size: 0.8rem;
  padding: 0.28rem 0.75rem; border-radius: 6px;
}
.meta-badge strong { color: #fff; }
.meta-badge.green { border-color: rgba(81,250,170,0.3); background: rgba(81,250,170,0.07); }
.meta-badge.green strong { color: var(--color-accent); }

/* Pros/Cons */
.pros-cons { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.pros-block, .cons-block {
  border-radius: var(--radius-sm); padding: 1.25rem;
}
.pros-block { background: rgba(81,250,170,0.06); border: 1px solid rgba(81,250,170,0.18); }
.cons-block { background: rgba(255,95,126,0.06); border: 1px solid rgba(255,95,126,0.18); }
.pros-title, .cons-title { font-size: 0.9rem; font-weight: 700; margin-bottom: 0.75rem; }
.pros-title { color: var(--color-accent); }
.cons-title { color: var(--color-danger); }
.pros-block ul, .cons-block ul { padding-left: 1rem; list-style: disc; }
.pros-block ul li, .cons-block ul li { font-size: 0.88rem; line-height: 1.6; margin-bottom: 0.35rem; }
.pros-block ul li { color: var(--color-text); }
.cons-block ul li { color: var(--color-text); }

/* ---- Sidebar ---- */
.review-sidebar { position: sticky; top: 90px; }
.sidebar-card {
  background: var(--color-card-bg);
  border: 1px solid rgba(81,250,170,0.2);
  border-radius: var(--radius);
  padding: 1.5rem;
  display: flex; flex-direction: column; gap: 1rem;
  box-shadow: 0 0 24px rgba(81,250,170,0.06);
}
.sidebar-broker-name { font-size: 1.2rem; font-weight: 800; color: #fff; }
.sidebar-rating { display: flex; align-items: center; gap: 0.5rem; }
.sidebar-stars { color: var(--color-accent); font-size: 1.1rem; }
.sidebar-score { font-size: 1rem; font-weight: 700; color: #fff; }
.sidebar-facts { display: flex; flex-direction: column; gap: 0.5rem; }
.sf-row {
  display: flex; justify-content: space-between;
  font-size: 0.85rem; padding: 0.5rem 0;
  border-bottom: 1px solid var(--color-border);
}
.sf-row:last-child { border-bottom: none; }
.sf-row span { color: var(--color-text-muted); }
.sf-row strong { color: #fff; font-weight: 600; }
.sidebar-disclaimer { font-size: 0.72rem; color: var(--color-text-muted); text-align: center; line-height: 1.5; }

/* ---- FAQ ---- */
.faq-list { display: flex; flex-direction: column; gap: 0.75rem; }
.faq-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-bg-alt);
  transition: border-color var(--transition);
}
.faq-item.open { border-color: rgba(81,250,170,0.3); }
.faq-q {
  width: 100%; text-align: left; background: none; border: none;
  padding: 1rem 1.25rem; font-size: 0.95rem; font-weight: 600;
  color: var(--color-text); cursor: pointer;
  display: flex; justify-content: space-between; align-items: center;
}
.faq-q::after {
  content: '+'; font-size: 1.3rem; color: var(--color-accent);
  transition: transform var(--transition); flex-shrink: 0;
}
.faq-q.active::after { transform: rotate(45deg); }
.faq-a { display: none; padding: 0 1.25rem 1rem; }
.faq-a.open { display: block; }
.faq-a p { color: var(--color-text-muted); font-size: 0.9rem; line-height: 1.7; margin: 0; }

/* ---- Page Hero (inner pages) ---- */
.page-hero {
  background: linear-gradient(135deg, #0c0e1d 0%, #1a1045 60%, #0c1a2e 100%);
  padding: 3rem 0 2.5rem;
  border-bottom: 1px solid var(--color-border);
}
.breadcrumb {
  font-size: 0.82rem; color: var(--color-text-muted); margin-bottom: 1rem;
}
.breadcrumb a { color: var(--color-text-muted); }
.breadcrumb a:hover { color: var(--color-accent); }
.breadcrumb span { color: var(--color-text); }

/* ---- Compare Table ---- */
.compare-table { width: 100%; border-collapse: collapse; font-size: 0.9rem; border-radius: var(--radius); overflow: hidden; box-shadow: var(--shadow); }
.compare-table thead tr { background: linear-gradient(90deg, rgba(81,250,170,0.15), rgba(255,129,255,0.1)); }
.compare-table thead th { padding: 0.75rem 1rem; text-align: left; font-weight: 700; font-size: 0.82rem; letter-spacing: 0.04em; text-transform: uppercase; border: none; color: var(--color-accent); }
.compare-table tbody tr { border-bottom: 1px solid var(--color-border); transition: background 0.15s; }
.compare-table tbody tr:last-child { border-bottom: none; }
.compare-table tbody tr:hover { background: rgba(81,250,170,0.05); }
.compare-table tbody tr:nth-child(even) { background: rgba(97,96,131,0.08); }
.compare-table tbody td { padding: 0.7rem 1rem; color: var(--color-text); vertical-align: middle; }
.compare-table tbody td:first-child { font-weight: 700; color: #fff; }

/* ---- Feature Cards ---- */
.feature-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.25rem; }
.feature-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.feature-card:hover { border-color: rgba(81,250,170,0.3); box-shadow: 0 0 18px rgba(81,250,170,0.06); }
.feature-icon {
  width: 44px; height: 44px; border-radius: 10px;
  background: rgba(81,250,170,0.1); border: 1px solid rgba(81,250,170,0.2);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; margin-bottom: 1rem;
}
.feature-card h3 { font-size: 1rem; margin-bottom: 0.5rem; color: #fff; }
.feature-card p { font-size: 0.88rem; color: var(--color-text-muted); line-height: 1.6; margin: 0; }

/* ---- Footer ---- */
.site-footer {
  background: #090b18;
  border-top: 1px solid var(--color-border);
  padding: 3rem 0 1.5rem;
}
.footer-inner {
  max-width: var(--max-width); margin: 0 auto;
  padding: 0 1.25rem;
  display: flex; flex-direction: column; gap: 1.5rem;
}
.footer-logo { font-size: 1.4rem; font-weight: 800; color: #fff; }
.footer-logo span { color: var(--color-accent); }
.footer-desc { color: var(--color-text-muted); font-size: 0.88rem; max-width: 420px; }
.footer-nav { display: flex; flex-wrap: wrap; gap: 0.5rem 1.5rem; }
.footer-nav a { font-size: 0.85rem; color: var(--color-text-muted); transition: color var(--transition); }
.footer-nav a:hover { color: var(--color-accent); }
.footer-risk {
  font-size: 0.78rem; color: var(--color-text-muted);
  background: rgba(97,96,131,0.12); border: 1px solid var(--color-border);
  border-radius: var(--radius-sm); padding: 0.75rem 1rem; line-height: 1.6;
}
.footer-copy { font-size: 0.78rem; color: var(--color-mid); }

/* ---- Stats Strip ---- */
.stats-strip {
  display: flex; flex-wrap: wrap; gap: 0;
  background: var(--color-card-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden; margin: 1.5rem 0;
}
.stats-strip-item {
  flex: 1; min-width: 130px;
  padding: 1.25rem 1.5rem;
  border-right: 1px solid var(--color-border);
  display: flex; flex-direction: column; gap: 0.25rem;
}
.stats-strip-item:last-child { border-right: none; }
.strip-num { font-size: 1.5rem; font-weight: 800; color: var(--color-accent); }
.strip-label { font-size: 0.78rem; color: var(--color-text-muted); }

/* ---- Scrollable / Overflow tables ---- */
.table-wrap { overflow-x: auto; border-radius: var(--radius); }

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .review-layout { grid-template-columns: 1fr; }
  .review-sidebar { position: static; }
  .pros-cons { grid-template-columns: 1fr; }
  .top-brokers-grid { grid-template-columns: 1fr; }
}
@media (max-width: 680px) {
  .nav-links {
    display: none; flex-direction: column;
    position: absolute; top: 100%; left: 0; right: 0;
    background: rgba(12,14,29,0.98);
    padding: 1rem 1.25rem; gap: 1rem;
    border-bottom: 1px solid var(--color-border);
  }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }
  .hero-stats { gap: 1.5rem; }
  .broker-list-item { flex-direction: column; align-items: flex-start; }
  .broker-list-item .btn-outline { width: 100%; text-align: center; }
  .stats-strip { flex-direction: column; }
  .stats-strip-item { border-right: none; border-bottom: 1px solid var(--color-border); }
  .stats-strip-item:last-child { border-bottom: none; }
}