/* -------------------------------------------------------------
ROOT THEME VARIABLES
------------------------------------------------------------- */
:root {
  --accent: #e63946;
  --radius: 14px;
  --font-main: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;

  /* DARK MODE DEFAULTS */
  --bg: radial-gradient(circle at top, #111827 0, #020308 55%);
  --bg-alt: #0b0d14;
  --fg: #f5f5f7;
  --muted: #a0a4b8;
  --border: #25283a;
  --card: #0f111a;
  --shadow: 0 18px 40px rgba(0, 0, 0, 0.45);
}

/* LIGHT MODE OVERRIDES */
body.light-mode {
  --bg: #f5f7fb;
  --bg-alt: #ffffff;
  --fg: #111827;
  --muted: #4b5563;
  --border: rgba(15, 23, 42, 0.12);
  --card: #ffffff;
  --shadow: 0 10px 22px rgba(0, 0, 0, 0.08);
}

/* -------------------------------------------------------------
GENERAL BASE STYLES
------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-main);
  scroll-behavior: smooth;
}

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

.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* -------------------------------------------------------------
HEADER
------------------------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(20px);
  background: rgba(5, 6, 10, 0.85);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

body.light-mode .site-header {
  background: rgba(255, 255, 255, 0.88);
  border-bottom-color: rgba(0, 0, 0, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0;
}

.logo {
  width: 40px;
  height: 40px;
  object-fit: contain;
}

.logo-wrap {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-name {
  font-weight: 700;
  font-size: 0.92rem;
  text-transform: uppercase;
}

.brand-tagline {
  font-size: 0.78rem;
  color: var(--muted);
}

/* -------------------------------------------------------------
NAVIGATION
------------------------------------------------------------- */
.main-nav {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.main-nav a {
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 0.9rem;
  color: var(--muted);
}

.main-nav a.active,
.main-nav a:hover {
  background: rgba(255, 255, 255, 0.08);
  color: var(--fg);
}

body.light-mode .main-nav a:hover,
body.light-mode .main-nav a.active {
  background: rgba(15, 23, 42, 0.08);
  color: var(--fg);
}

/* HAMBURGER MENU BUTTON */
.nav-toggle {
  display: none;
  border: 1px solid rgba(255, 255, 255, 0.35);
  background: transparent;
  padding: 0.35rem 0.7rem;
  border-radius: 999px;
  font-size: 1.5rem;
  cursor: pointer;
  color: #ffffff;
}

/* Light mode hamburger fix */
body.light-mode .nav-toggle {
  color: #111827;
  border-color: rgba(0, 0, 0, 0.45);
}

/* -------------------------------------------------------------
BUTTONS
------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: 0.2s ease;
}

.btn-primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
  box-shadow: 0 8px 20px rgba(230, 57, 70, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(230, 57, 70, 0.6);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  color: var(--fg);
  border-color: rgba(255, 255, 255, 0.12);
}

body.light-mode .btn-secondary {
  background: #f3f4f6;
  border-color: #e5e7eb;
  color: #1f2937;
}

.btn-outline {
  border: 1px solid rgba(255, 255, 255, 0.35);
}

body.light-mode .btn-outline {
  border-color: rgba(0, 0, 0, 0.25);
  color: #111827;
}

.btn-block {
  width: 100%;
}

/* -------------------------------------------------------------
HERO
------------------------------------------------------------- */
.hero {
  padding: 3.5rem 0;
}

.hero h1 {
  font-size: 2.6rem;
  margin-bottom: 1rem;
}

.hero p {
  font-size: 1.05rem;
  color: var(--muted);
}

.hero-card {
  background: var(--card);
  padding: 1.5rem;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

body.light-mode .hero-card {
  background: #ffffff;
}

/* -------------------------------------------------------------
SECTIONS + CARDS
------------------------------------------------------------- */
.section {
  padding: 3rem 0;
}

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

.section h2 {
  font-size: 1.8rem;
  margin-bottom: 0.8rem;
}

.section-intro {
  max-width: 640px;
  color: var(--muted);
}

.grid {
  display: grid;
  gap: 1.6rem;
  margin-top: 1.6rem;
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.card {
  background: var(--card);
  border-radius: var(--radius);
  padding: 1.4rem;
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
}

body.light-mode .card {
  background: #ffffff;
}

/* -------------------------------------------------------------
PRICING TAGS
------------------------------------------------------------- */
.price-tag {
  font-weight: 700;
  margin: 0.4rem 0 1rem;
  color: var(--accent);
}

/* -------------------------------------------------------------
FOOTER
------------------------------------------------------------- */
.site-footer {
  background: #020308;
  padding: 2rem 0;
  margin-top: 3rem;
  font-size: 0.9rem;
  color: var(--muted);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 2rem;
}

body.light-mode .site-footer {
  background: #0f172a;
  color: #9ca3af;
}

/* -------------------------------------------------------------
BACK TO TOP BUTTON
------------------------------------------------------------- */
#backToTop {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: var(--accent);
  color: white;
  display: none;
  justify-content: center;
  align-items: center;
  font-size: 1.3rem;
  cursor: pointer;
  border: none;
}

#backToTop.visible {
  display: flex;
}

/* -------------------------------------------------------------
RESPONSIVE
------------------------------------------------------------- */
@media (max-width: 860px) {
  .nav-toggle {
    display: inline-flex;
  }

  .main-nav {
    display: none;
    flex-direction: column;
    gap: 1rem;
    padding: 1.25rem;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
  }

  body.light-mode .main-nav {
    background: #ffffff;
  }

  .main-nav.nav-open {
    display: flex;
  }

  .hero {
    padding: 2.5rem 0;
  }

  .hero h1 {
    font-size: 2.1rem;
  }
}