/* =========================================================
   WATTRIX / FHATAL STUDIOS — GLOBAL STYLES (2026 Revamp)
   =======================================================*/

/* --- 1. Variables & Tokens --- */
:root {
  /* Colors */
  --bg-deep: #050505;
  /* Deeper black for higher contrast */
  --bg-sub: #0a0a0a;
  /* Subtle off-black */
  --bg-card: rgba(15, 20, 35, 0.6);
  /* Glassy card bg */

  --text-main: #f0f4f8;
  --text-muted: #94a3b8;
  --text-dim: #64748b;

  /* Brand Gradient Colors */
  --color-1: #7559ff;
  /* Electric Violet */
  --color-2: #38fbd0;
  /* Cyan Mint */
  --color-3: #2dd4ff;
  /* Sky Blue */

  /* Gradients */
  --grad-logo: linear-gradient(135deg, var(--color-1), var(--color-2));
  --grad-glow: radial-gradient(circle at 50% -20%, rgba(117, 89, 255, 0.15), transparent 70%);
  --grad-border: linear-gradient(145deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.02));
  --grad-border-active: linear-gradient(145deg, var(--color-1), var(--color-2));

  /* Spacing & Layout */
  --s-1: 4px;
  --s-2: 8px;
  --s-3: 16px;
  --s-4: 24px;
  --s-5: 32px;
  --s-6: 48px;
  --s-7: 64px;
  --s-8: 96px;
  --nav-height: 70px;
  --container-width: 1200px;

  /* Radius */
  --r-sm: 8px;
  --r-md: 16px;
  --r-lg: 24px;
  --r-full: 999px;

  /* Effects */
  --glass: blur(20px);
  --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 20px rgba(117, 89, 255, 0.2);
  --trans-fast: 0.2s cubic-bezier(0.2, 0.8, 0.2, 1);
  --trans-smooth: 0.4s cubic-bezier(0.2, 0.8, 0.2, 1);

  /* Fonts */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  /* Cleaner body font if available, fallback system */
  --font-mono: 'JetBrains Mono', monospace;

  /* Force native controls (like scrollbars and select dropdowns) to dark mode */
  color-scheme: dark;
}

/* --- 2. Reset & Base --- */
*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg-deep);
  color: var(--text-main);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4 {
  margin: 0;
  font-family: var(--font-display);
  line-height: 1.1;
  font-weight: 700;
  color: #fff;
}

p {
  margin: 0;
  color: var(--text-muted);
}

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

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

button,
input,
select {
  font-family: inherit;
}

/* Grid Background */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  /* Larger grid */
  mask-image: radial-gradient(ellipse at 50% 20%, black 40%, transparent 80%);
}

/* --- 3. Utility Classes --- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--s-4);
}

.section {
  padding: var(--s-7) 0;
  position: relative;
}

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

.d-flex {
  display: flex;
}

.items-center {
  align-items: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 {
  gap: var(--s-2);
}

.gap-3 {
  gap: var(--s-3);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: 15px;
  cursor: pointer;
  transition: var(--trans-fast);
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text-main);
}

.btn:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-1px);
}

.btn:active {
  transform: translateY(0);
}

.btn.primary {
  background: var(--text-main);
  color: #000;
  border: none;
}

.btn.primary:hover {
  background: #fff;
  box-shadow: 0 4px 20px rgba(255, 255, 255, 0.3);
}

.btn.glow {
  background: rgba(117, 89, 255, 0.15);
  border: 1px solid rgba(117, 89, 255, 0.4);
  color: #a390ff;
}

.btn.glow:hover {
  background: rgba(117, 89, 255, 0.25);
  box-shadow: 0 0 15px rgba(117, 89, 255, 0.3);
  color: #fff;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border-radius: var(--r-full);
  background: rgba(56, 251, 208, 0.1);
  border: 1px solid rgba(56, 251, 208, 0.2);
  color: var(--color-2);
  font-size: 12px;
  font-weight: 600;
  font-family: var(--font-mono);
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* --- 4. Navigation (Floating) --- */
.nav-wrapper {
  position: fixed;
  top: 20px;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  justify-content: center;
  padding: 0 var(--s-3);
  pointer-events: none;
  /* Let clicks pass through around the nav */
}

.nav {
  pointer-events: auto;
  background: rgba(10, 10, 10, 0.7);
  backdrop-filter: var(--glass);
  -webkit-backdrop-filter: var(--glass);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--r-full);
  padding: 8px 8px 8px 24px;
  display: flex;
  align-items: center;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  max-width: 100%;
}

.brand {
  font-weight: 700;
  font-size: 18px;
  display: flex;
  align-items: center;
  gap: 8px;
  margin-right: 32px;
}

.brand svg {
  width: 24px;
  height: 24px;
}

.nav-links {
  display: flex;
  gap: 4px;
}

.nav-links a {
  padding: 8px 16px;
  border-radius: var(--r-full);
  font-size: 14px;
  font-weight: 500;
  color: var(--text-muted);
}

.nav-links a:hover {
  color: #fff;
  background: rgba(255, 255, 255, 0.05);
}

.nav-links a.active {
  color: #fff;
  background: rgba(255, 255, 255, 0.1);
}

.nav-cta {
  margin-left: 8px;
}

.nav-cta .btn {
  padding: 8px 20px;
  border-radius: var(--r-full);
  font-size: 14px;
}

/* Mobile Nav Adjustments */
@media (max-width: 768px) {
  .nav-wrapper {
    top: 10px;
  }

  .nav {
    padding: 12px 16px;
    border-radius: var(--r-md);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: rgba(10, 10, 10, 0.95);
    overflow: hidden;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }

  /* Brand Row always visible */
  .brand {
    margin: 0;
    justify-content: space-between;
    width: 100%;
    z-index: 10;
  }

  /* Hamburger Button */
  .nav-toggle {
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 24px;
    height: 24px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    z-index: 20;
  }

  .nav-toggle span {
    display: block;
    width: 100%;
    height: 2px;
    background: #fff;
    border-radius: 2px;
    transition: var(--trans-fast);
  }

  /* Menu Content (Hidden by default) */
  .nav-links,
  .nav-cta {
    display: flex;
    flex-direction: column;
    opacity: 0;
    max-height: 0;
    pointer-events: none;
    transform: translateY(-10px);
    transition: all 0.3s ease;
  }

  .nav-links {
    margin-top: 0;
    padding-bottom: 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  }

  .nav-links a {
    text-align: left;
    padding: 12px 16px;
    border-radius: var(--r-md);
  }

  .nav-cta {
    margin: 0;
    padding-top: 0;
  }

  .nav-cta .btn {
    width: 100%;
    margin-top: 12px;
  }

  /* Open State */
  .nav.is-open {
    gap: 12px;
    padding-bottom: 16px;
  }

  .nav.is-open .nav-links,
  .nav.is-open .nav-cta {
    opacity: 1;
    max-height: 300px;
    /* Arbitrary large height */
    pointer-events: auto;
    transform: translateY(0);
  }

  .nav.is-open .nav-links {
    margin-top: 12px;
    padding-bottom: 12px;
  }

  .nav.is-open .nav-cta {
    padding-top: 0;
  }

  /* Hamburger Animation */
  .nav.is-open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav.is-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }

  .nav.is-open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }
}

/* Desktop Only */
@media (min-width: 769px) {
  .nav-toggle {
    display: none;
  }
}

/* --- 5. Hero Section --- */
.hero {
  padding-top: 160px;
  /* Space for fixed nav */
  padding-bottom: var(--s-8);
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Ambient background glow */
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 80vw;
  height: 600px;
  background: radial-gradient(circle, rgba(117, 89, 255, 0.2), transparent 60%);
  filter: blur(80px);
  z-index: -1;
  pointer-events: none;
}

.hero h1 {
  font-size: clamp(40px, 6vw, 80px);
  letter-spacing: -2px;
  margin-bottom: var(--s-3);
  background: linear-gradient(to bottom right, #fff 50%, #94a3b8 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: clamp(18px, 2vw, 22px);
  max-width: 600px;
  margin: 0 auto var(--s-5);
  line-height: 1.5;
}

/* --- 6. Bento Grid / Cards --- */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--s-4);
}

.card {
  background: var(--bg-card);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--r-lg);
  padding: var(--s-4);
  transition: var(--trans-smooth);
}

.card:hover {
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
  box-shadow: 0 10px 40px -10px rgba(0, 0, 0, 0.5);
}

.card h3 {
  font-size: 20px;
  margin-bottom: 8px;
}

.card .icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--s-3);
  color: var(--color-2);
}

.card .icon svg {
  width: 24px;
  height: 24px;
}

/* --- 7. Footer --- */
footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: var(--s-6) 0;
  margin-top: var(--s-8);
  text-align: center;
  font-size: 14px;
  color: var(--text-dim);
}

footer a:hover {
  color: var(--color-2);
}

/* --- 8. Loader --- */
#loader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #050505;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: opacity 0.5s ease;
}

#loader.hidden {
  opacity: 0;
  pointer-events: none;
}

.spinner {
  width: 50px;
  height: 50px;
  border: 3px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--color-1);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* --- 9. Calculator Specifics --- */
.calc-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-4);
  align-items: start;
}

@media (max-width: 900px) {
  .calc-layout {
    grid-template-columns: 1fr;
  }
}

.input-group {
  margin-bottom: var(--s-3);
}

.input-group label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
  font-weight: 500;
}

.input-wrapper {
  position: relative;
}

input[type="number"],
input[type="text"],
select {
  width: 100%;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--r-md);
  padding: 12px 16px;
  color: #fff;
  font-size: 16px;
  transition: var(--trans-fast);
}

input:focus,
select:focus {
  outline: none;
  border-color: var(--color-1);
  box-shadow: 0 0 0 3px rgba(117, 89, 255, 0.15);
  background: rgba(255, 255, 255, 0.05);
}

select option {
  background-color: #000;
  color: #fff;
}

.results-card {
  background: linear-gradient(135deg, rgba(20, 25, 45, 0.8), rgba(10, 15, 30, 0.9));
  border: 1px solid rgba(117, 89, 255, 0.2);
  position: sticky;
  top: 100px;
}

.kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: var(--s-4);
}

.kpi-box {
  background: rgba(0, 0, 0, 0.3);
  padding: 12px;
  border-radius: var(--r-sm);
  text-align: center;
}

.kpi-val {
  font-size: 24px;
  font-weight: 700;
  color: #fff;
  font-family: var(--font-mono);
}

.kpi-label {
  font-size: 11px;
  text-transform: uppercase;
  color: var(--text-dim);
  letter-spacing: 1px;
  margin-top: 4px;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  width: 90%;
  max-width: 600px;
  background: rgba(15, 20, 30, 0.95);
  backdrop-filter: blur(20px);
  padding: 20px;
  border-radius: var(--r-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.5);
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 16px;
  animation: slideUp 0.4s ease-out;
}

.cookie-banner.hidden {
  display: none;
}

@keyframes slideUp {
  from {
    transform: translate(-50%, 100%);
    opacity: 0;
  }

  to {
    transform: translate(-50%, 0);
    opacity: 1;
  }
}

/* Range Slider Styling */
input[type=range] {
  -webkit-appearance: none;
  width: 100%;
  background: transparent;
}

input[type=range]::-webkit-slider-thumb {
  -webkit-appearance: none;
  height: 16px;
  width: 16px;
  border-radius: 50%;
  background: var(--color-2);
  cursor: pointer;
  margin-top: -6px;
  box-shadow: 0 0 10px var(--color-2);
}

input[type=range]::-webkit-slider-runnable-track {
  width: 100%;
  height: 4px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 2px;
}