/* ========================= */
/* BASE RESETS                */
/* ========================= */
:root {
  --background: #ffffff;
  --foreground: #171717;
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0a0a0a;
    --foreground: #ededed;
  }
}

html {
  height: 100%;
}

html,
body {
  max-width: 100vw;
  overflow-x: hidden;
}

body {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

* {
  box-sizing: border-box;
}

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

/* ========================= */
/* DESIGN SYSTEM TOKENS       */
/* ========================= */
:root {
  /* Typography Variables from Fonts */
  --font-heading: 'Manrope', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Global Transition for smooth Theme Switching */
  --transition-speed: 0.3s;
}

/* ------------------------- */
/* LIGHT MODE                */
/* ------------------------- */
:root[data-bs-theme='light'] {
  --bs-body-bg: #f8f9fa;
  --bs-body-color: #212529;
  --bs-secondary-color: #6c757d;

  --bs-primary: #005bc1;
  --bs-secondary: #3131c0;
  
  --surface: #ffffff;
  --surface-low: #f8f9fa;
  --surface-container: #ffffff;
  --surface-bright: #ffffff;
  
  --card-bg: rgba(255, 255, 255, 0.6);
  --card-border: rgba(0, 0, 0, 0.05);
  --card-shadow: 0 4px 32px rgba(0, 0, 0, 0.05);

  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.1);
  --glass-blur: blur(32px);

  --glass-pill-bg: rgba(255, 255, 255, 0.92);
  --glass-pill-border: rgba(0, 0, 0, 0.08);

  --glow-radial: radial-gradient(circle at top right, rgba(0, 91, 193, 0.15), transparent 50%);
  --glow-linear: linear-gradient(135deg, rgba(0, 91, 193, 0.1), rgba(0, 91, 193, 0.25));

  --btn-kinetic-color: #ffffff;
  --btn-glass-bg: rgba(0, 0, 0, 0.05);
  --btn-glass-bg-hover: rgba(0, 0, 0, 0.1);
  --btn-glass-border: rgba(0, 0, 0, 0.15);
}

/* ------------------------- */
/* DARK MODE (Lumina Flow)   */
/* ------------------------- */
:root[data-bs-theme='dark'] {
  --bs-body-bg: #131313;
  --bs-body-color: #e5e2e1;
  --bs-secondary-color: #a0a6ac;

  --bs-primary: #adc6ff;
  --bs-secondary: #c0c1ff;

  --surface: #131313;
  --surface-low: #1c1b1b;
  --surface-container: #201f1f;
  --surface-bright: #393939;

  --card-bg: rgba(32, 31, 31, 0.5);
  --card-border: rgba(255, 255, 255, 0.05);
  --card-shadow: 0 8px 30px rgba(0, 0, 0, 0.2);

  --glass-bg: rgba(53, 53, 52, 0.75);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-blur: blur(32px);

  --glass-pill-bg: rgba(30, 30, 30, 0.88);
  --glass-pill-border: rgba(255, 255, 255, 0.08);

  --glow-radial: radial-gradient(circle at top right, rgba(173, 198, 255, 0.15), transparent 50%);
  --glow-linear: linear-gradient(135deg, rgba(173, 198, 255, 0.05), rgba(75, 142, 255, 0.2));

  --btn-kinetic-color: #002e69;
  --btn-glass-bg: rgba(255, 255, 255, 0.1);
  --btn-glass-bg-hover: rgba(255, 255, 255, 0.2);
  --btn-glass-border: rgba(255, 255, 255, 0.2);
}

body {
  font-family: var(--font-body);
  background-color: var(--bs-body-bg);
  color: var(--bs-body-color);
  transition: background-color var(--transition-speed), color var(--transition-speed);
}

.text-muted {
  color: var(--bs-secondary-color) !important;
}

h1, h2, h3, h4, h5, h6, .display-1, .display-2, .display-3, .display-4, .navbar-brand {
  font-family: var(--font-heading);
  letter-spacing: -0.02em;
}

/* ------------------------- */
/* UTILITY CLASSES           */
/* ------------------------- */

.card-ethereal {
  background-color: var(--card-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--card-border);
  box-shadow: var(--card-shadow);
  border-radius: 1.5rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color var(--transition-speed);
}

.card-ethereal:hover {
  transform: translateY(-5px);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
}

.glass-nav {
  background-color: var(--glass-bg) !important;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--glass-border);
}

.glass-nav-pill {
  background-color: var(--glass-pill-bg) !important;
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-pill-border);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
  transition: background-color var(--transition-speed), border-color var(--transition-speed);
  border-radius: 1.5rem;
}

@media (min-width: 992px) {
  .glass-nav-pill {
    border-radius: 3rem;
  }
}

.primary-gradient-text {
  background: linear-gradient(135deg, var(--bs-primary), #4b8eff);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero-text-column {
  font-family: serif;
}

/* The Kinetic Trigger Button */
.btn-kinetic {
  background: linear-gradient(135deg, var(--bs-primary), #4b8eff);
  border: none;
  border-radius: 3rem;
  color: var(--btn-kinetic-color);
  padding: 0.75rem 2rem;
  font-weight: 600;
  transition: filter 0.2s ease, transform 0.2s ease;
}

.btn-kinetic:hover {
  filter: brightness(1.1);
  transform: scale(1.02);
  color: var(--btn-kinetic-color);
}

/* Secondary Button Glass Effect */
.btn-glass {
  background: var(--btn-glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--btn-glass-border);
  border-radius: 3rem;
  color: var(--bs-body-color);
  padding: 0.75rem 2rem;
  font-weight: 600;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.btn-glass:hover {
  background: var(--btn-glass-bg-hover);
  color: var(--bs-body-color);
  transform: scale(1.02);
}

.bg-surface-low {
  background-color: var(--surface-low);
}

.section-padding {
  padding: 5rem 0;
}

.nav-link-item {
  font-weight: 900;
}

/* ------------------------- */
/* NAVBAR HTML/CSS           */
/* ------------------------- */

.nav-wrapper {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  padding: 1rem 1rem 0;
  z-index: 1000;
  pointer-events: none;
}
.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 12px;
}
.nav-inner {
  max-width: 1000px;
  margin: 0 auto;
  padding: 0.65rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  pointer-events: auto;
  position: relative;
  flex-wrap: wrap;
}

/* Brand */
.nav-brand {
  font-weight: 700;
  font-size: 1.1rem;
  text-decoration: none;
  color: inherit;
  flex-shrink: 0;
  z-index: 1;
}

/* Center links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  list-style: none;
  margin: 0;
  padding: 0;
  font-weight: 500;
  font-size: 0.9rem;
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

/* Right actions */
.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
  z-index: 1;
}

.nav-link-item {
  text-decoration: none;
  color: var(--bs-secondary-color, #6c757d);
  transition: color 0.15s;
  white-space: nowrap;
}
.nav-link-item:hover { color: var(--bs-body-color, #212529); }
.nav-link-item--active { color: var(--bs-primary, #0d6efd) !important; font-weight: 600; }

.btn-trial {
  background: linear-gradient(135deg, var(--bs-primary), #4b8eff);
  border: none;
  border-radius: 50rem;
  color: var(--btn-kinetic-color);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.4rem 1rem;
  text-decoration: none;
  display: inline-block;
  white-space: nowrap;
  transition: filter 0.2s ease, transform 0.2s ease;
}
.btn-trial:hover {
  filter: brightness(1.1);
  transform: scale(1.02);
  color: var(--btn-kinetic-color);
}

/* Mobile toggler */
.nav-toggler {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  z-index: 1;
}
.toggler-bar {
  display: block;
  width: 22px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.25s, opacity 0.25s;
  transform-origin: center;
}
.bar-top-open { transform: translateY(7px) rotate(45deg); }
.bar-mid-open { opacity: 0; }
.bar-bot-open { transform: translateY(-7px) rotate(-45deg); }

/* Mobile collapse */
.nav-collapse {
  display: none;
  width: 100%;
}
.nav-collapse--open { display: block; }

.nav-links-mobile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  font-weight: 500;
  font-size: 0.9rem;
  text-align: center;
}
.nav-actions-mobile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  margin: 1rem 0 0.5rem;
}

/* Responsive */
@media (max-width: 991px) {
  .nav-links   { display: none; }
  .nav-actions { display: none; }
  .nav-toggler { display: flex; }
}