/* ============================================================
   Ferroxel Hosting — Design System & Global Styles
   Dark-mode-first, industrial forge theme
   ============================================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colors — Dark mode (default) */
  --bg-primary: #0f1114;
  --bg-secondary: #161920;
  --bg-tertiary: #1c1f28;
  --bg-card: #1a1d26;
  --bg-card-hover: #222633;
  --border-color: #2a2e3a;
  --border-subtle: #22252f;

  --text-primary: #e8eaf0;
  --text-secondary: #9ba1b4;
  --text-muted: #6b7186;

  --accent: #e86a2a;
  --accent-hover: #f07a3a;
  --accent-glow: rgba(232, 106, 42, 0.15);
  --accent-subtle: rgba(232, 106, 42, 0.08);

  --success: #34d399;
  --warning: #fbbf24;
  --info: #60a5fa;

  /* Typography */
  --font-heading: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;

  /* Sizing */
  --container-max: 1200px;
  --container-narrow: 900px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

/* --- Light Mode --- */
[data-theme="light"] {
  --bg-primary: #f5f6f8;
  --bg-secondary: #ebedf2;
  --bg-tertiary: #e0e3ea;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f2f6;
  --border-color: #d1d5e0;
  --border-subtle: #e5e8ef;

  --text-primary: #1a1d26;
  --text-secondary: #4b5068;
  --text-muted: #7c829a;

  --accent: #d45a1a;
  --accent-hover: #e06a2a;
  --accent-glow: rgba(212, 90, 26, 0.12);
  --accent-subtle: rgba(212, 90, 26, 0.06);
}

/* --- Reset & Base --- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

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

ul, ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: clamp(2rem, 5vw, 3.2rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); }
h3 { font-size: clamp(1.2rem, 2.5vw, 1.6rem); }
h4 { font-size: 1.15rem; }

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: var(--container-narrow);
}

/* --- Section --- */
.section {
  padding: var(--space-4xl) 0;
}

.section--alt {
  background-color: var(--bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.section-header p {
  max-width: 600px;
  margin: var(--space-sm) auto 0;
  font-size: 1.05rem;
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 0.75rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 600;
  border: none;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
}

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

.btn--primary:hover {
  background-color: var(--accent-hover);
  box-shadow: 0 0 20px var(--accent-glow);
}

.btn--secondary {
  background-color: transparent;
  color: var(--text-primary);
  border: 1.5px solid var(--border-color);
}

.btn--secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn--sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.85rem;
}

.btn--lg {
  padding: 1rem 2.25rem;
  font-size: 1.05rem;
}

/* --- Badge / Tag --- */
.badge {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 999px;
  background-color: var(--accent-subtle);
  color: var(--accent);
  border: 1px solid var(--accent-glow);
}

/* --- Cards --- */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
  transition: all var(--transition-base);
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 24px rgba(0,0,0,0.2);
}

/* --- Pricing Toggle --- */
.billing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
}

.billing-toggle__label {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-fast);
}

.billing-toggle__label.active {
  color: var(--text-primary);
}

.billing-toggle__switch {
  position: relative;
  width: 48px;
  height: 26px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 999px;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.billing-toggle__switch::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 18px;
  height: 18px;
  background-color: var(--accent);
  border-radius: 50%;
  transition: transform var(--transition-fast);
}

.billing-toggle__switch.annual::after {
  transform: translateX(22px);
}

.billing-toggle__switch.annual {
  background-color: var(--accent-subtle);
}

.billing-toggle__save {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--success);
}

/* --- Pricing Grid --- */
.pricing-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-xl);
  align-items: start;
}

.pricing-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  text-align: center;
  transition: all var(--transition-base);
  position: relative;
}

.pricing-card:hover {
  border-color: var(--accent);
}

.pricing-card--featured {
  border-color: var(--accent);
  box-shadow: 0 0 30px var(--accent-glow);
}

.pricing-card__name {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: var(--space-sm);
}

.pricing-card__price {
  font-family: var(--font-heading);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: var(--space-md) 0;
}

.pricing-card__price span {
  font-size: 1rem;
  font-weight: 400;
  color: var(--text-muted);
}

.pricing-card__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: var(--space-lg);
}

.pricing-card__features {
  text-align: left;
  margin-bottom: var(--space-xl);
}

.pricing-card__features li {
  padding: 0.4rem 0;
  font-size: 0.9rem;
  color: var(--text-secondary);
  display: flex;
  align-items: flex-start;
  gap: var(--space-sm);
}

.pricing-card__features li::before {
  content: '✓';
  color: var(--accent);
  font-weight: 700;
  flex-shrink: 0;
}

/* --- Feature Grid --- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  padding: var(--space-xl);
  border-radius: var(--radius-md);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
}

.feature-card__icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--accent-subtle);
  color: var(--accent);
  font-size: 1.3rem;
  margin-bottom: var(--space-md);
}

.feature-card h4 {
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: 0.9rem;
}

/* --- Stat Blocks --- */
.stat-bar {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-xl) var(--space-3xl);
  padding: var(--space-xl) 0;
}

.stat-block {
  text-align: center;
}

.stat-block__value {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-block__label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.15rem;
}

/* --- FAQ Accordion --- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
}

.faq-item {
  border-bottom: 1px solid var(--border-subtle);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-lg) 0;
  background: none;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 500;
  text-align: left;
  cursor: pointer;
  transition: color var(--transition-fast);
}

.faq-question:hover {
  color: var(--accent);
}

.faq-question::after {
  content: '+';
  font-size: 1.4rem;
  color: var(--text-muted);
  transition: transform var(--transition-fast);
  flex-shrink: 0;
  margin-left: var(--space-md);
}

.faq-item.open .faq-question::after {
  transform: rotate(45deg);
  color: var(--accent);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms ease, padding 300ms ease;
}

.faq-item.open .faq-answer {
  max-height: 80vh;
  padding-bottom: var(--space-lg);
}

.faq-answer p {
  font-size: 0.95rem;
  line-height: 1.7;
}

/* --- Table --- */
.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

th, td {
  padding: 0.85rem 1.25rem;
  text-align: left;
  border-bottom: 1px solid var(--border-subtle);
}

th {
  background: var(--bg-tertiary);
  font-family: var(--font-heading);
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

td {
  color: var(--text-secondary);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background-color: var(--bg-tertiary);
}

/* --- Tabs --- */
.tabs {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-xl);
  flex-wrap: wrap;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: var(--space-xs);
}

.tab-btn {
  padding: 0.6rem 1.25rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

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

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

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

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-xs);
}

.form-group input,
.form-group textarea,
.form-group select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
}

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

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* --- Callout --- */
.callout {
  display: flex;
  align-items: flex-start;
  gap: var(--space-lg);
  padding: var(--space-xl);
  background: var(--accent-subtle);
  border: 1px solid var(--accent-glow);
  border-radius: var(--radius-md);
  margin: var(--space-2xl) 0;
}

.callout__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  margin-top: 2px;
}

.callout h4 {
  margin-bottom: var(--space-xs);
}

.callout p {
  margin-bottom: 0;
  font-size: 0.9rem;
}

/* --- Two Column Split --- */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.split h3 {
  margin-bottom: var(--space-md);
}

.split p {
  font-size: 0.95rem;
}

.split .btn {
  margin-top: var(--space-md);
}

/* --- Testimonials --- */
.testimonial-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: var(--space-xl);
}

.testimonial-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: var(--space-xl);
}

.testimonial-card__stars {
  color: var(--warning);
  font-size: 0.9rem;
  margin-bottom: var(--space-sm);
}

.testimonial-card__text {
  font-size: 0.95rem;
  line-height: 1.7;
  color: var(--text-secondary);
  font-style: italic;
  margin-bottom: var(--space-md);
}

.testimonial-card__author {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* --- Header / Nav --- */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(15, 17, 20, 0.96);
  border-bottom: 1px solid var(--border-subtle);
}

@media (prefers-reduced-motion: no-preference) {
  .header {
    backdrop-filter: blur(12px);
  }
}

[data-theme="light"] .header {
  background: rgba(245, 246, 248, 0.96);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.header__logo {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.header__logo .logo-icon {
  color: var(--accent);
  font-size: 1.4rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

.nav__link {
  padding: 0.45rem 0.85rem;
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.nav__link:hover,
.nav__link.active {
  color: var(--text-primary);
  background: var(--bg-tertiary);
}

.header__actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: none;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  cursor: pointer;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.mobile-menu-btn {
  display: none;
  width: 36px;
  height: 36px;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.4rem;
  cursor: pointer;
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer__brand p {
  font-size: 0.88rem;
  margin-top: var(--space-sm);
  max-width: 280px;
}

.footer__col h4 {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.footer__col a {
  display: block;
  font-size: 0.88rem;
  color: var(--text-secondary);
  padding: 0.25rem 0;
  transition: color var(--transition-fast);
}

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

.footer__bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
  font-size: 0.8rem;
  color: var(--text-muted);
}

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

.footer__bottom-links a {
  color: var(--text-muted);
}

/* --- Placeholder tag styling --- */
.placeholder-tag {
  background: rgba(251, 191, 36, 0.1);
  color: var(--warning);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  font-size: 0.85em;
  font-style: italic;
}

/* --- Hero --- */
.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
}

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

.hero h1 {
  margin-bottom: var(--space-lg);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

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

.hero__subtitle {
  font-size: 1.1rem;
  max-width: 540px;
  margin: 0 auto var(--space-2xl);
  color: var(--text-secondary);
}

.hero__ctas {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* --- Node selector (Game Hosting) --- */
.node-selector {
  display: flex;
  gap: var(--space-md);
  margin-bottom: var(--space-2xl);
  justify-content: center;
  flex-wrap: wrap;
}

.node-btn {
  padding: 0.6rem 1.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background: var(--bg-card);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.node-btn:hover,
.node-btn.active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-subtle);
}

.node-btn .flag {
  font-size: 1.1rem;
}

/* --- Search Bar --- */
.search-bar {
  display: flex;
  max-width: 520px;
  margin: 0 auto var(--space-2xl);
}

.search-bar input {
  flex: 1;
  padding: 0.85rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
}

.search-bar input:focus {
  outline: none;
  border-color: var(--accent);
}

.search-bar button {
  padding: 0.85rem 1.5rem;
  background: var(--accent);
  border: none;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: #fff;
  font-family: var(--font-heading);
  font-weight: 600;
  cursor: pointer;
  transition: background var(--transition-fast);
}

.search-bar button:hover {
  background: var(--accent-hover);
}

/* --- Category Grid (Support) --- */
.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-lg);
}

.category-card {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.category-card:hover {
  border-color: var(--accent);
  background: var(--bg-card-hover);
}

.category-card__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
  color: var(--accent);
}

.category-card h4 {
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.category-card p {
  font-size: 0.82rem;
  margin: 0;
}

/* --- Contact Layout --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-3xl);
  align-items: start;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.contact-method__icon {
  font-size: 1.4rem;
  color: var(--accent);
  flex-shrink: 0;
  margin-top: 2px;
}

.contact-method h4 {
  font-size: 0.95rem;
  margin-bottom: 0.2rem;
}

.contact-method p {
  font-size: 0.85rem;
  margin: 0;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .nav {
    display: none;
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-xs);
    overflow-y: auto;
    z-index: 99;
  }

  .nav.open {
    display: flex;
  }

  .nav__link {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
  }

  .mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
  }

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

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

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

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 420px;
    margin-left: auto;
    margin-right: auto;
  }

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

  .stat-bar {
    gap: var(--space-lg);
  }

  .hero__ctas {
    flex-direction: column;
    align-items: center;
  }

  .billing-toggle {
    flex-wrap: wrap;
  }
}

@media (max-width: 480px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 var(--space-md);
  }

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