/* ==================================================================
   Variables
   ================================================================== */

:root {
  /* Colors */
  --color-bg: #050608; /* Deep charcoal / near-black */
  --color-surface: #0d0f14; /* Slightly lighter for cards/panels */
  --color-surface-alt: #151824;
  --color-text: #f5f7fa; /* Clean white */
  --color-text-muted: #a3a9b8; /* Soft gray */

  --color-primary: #36e3ff; /* Neon cyan */
  --color-primary-soft: rgba(54, 227, 255, 0.18);
  --color-success: #3fffb2; /* Neon green */
  --color-warning: #ffd35c; /* Warm, readable yellow */
  --color-danger: #ff3b6c; /* Vivid magenta-red */

  --color-border-subtle: #252938;
  --color-border-strong: #3a3f55;

  /* Neutral grays */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2933;
  --gray-900: #111827;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --font-display: "Rajdhani", "Eurostile", system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Display", "Segoe UI", Roboto, sans-serif;

  --font-size-xs: 0.75rem;  /* 12px */
  --font-size-sm: 0.875rem; /* 14px */
  --font-size-md: 1rem;     /* 16px */
  --font-size-lg: 1.125rem; /* 18px */
  --font-size-xl: 1.25rem;  /* 20px */
  --font-size-2xl: 1.5rem;  /* 24px */
  --font-size-3xl: 1.875rem;/* 30px */
  --font-size-4xl: 2.25rem; /* 36px */
  --font-size-5xl: 3rem;    /* 48px */

  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing scale (0–96px) */
  --space-0: 0;
  --space-1: 0.25rem;  /* 4px */
  --space-2: 0.5rem;   /* 8px */
  --space-3: 0.75rem;  /* 12px */
  --space-4: 1rem;     /* 16px */
  --space-5: 1.25rem;  /* 20px */
  --space-6: 1.5rem;   /* 24px */
  --space-8: 2rem;     /* 32px */
  --space-10: 2.5rem;  /* 40px */
  --space-12: 3rem;    /* 48px */
  --space-16: 4rem;    /* 64px */
  --space-20: 5rem;    /* 80px */
  --space-24: 6rem;    /* 96px */

  /* Radii */
  --radius-none: 0;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;
  --radius-pill: 999px;

  /* Shadows: subtle glow + depth to fit neon, geometric style */
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.55);
  --shadow-strong: 0 22px 60px rgba(0, 0, 0, 0.85);
  --shadow-neon: 0 0 0 1px rgba(54, 227, 255, 0.6), 0 0 18px rgba(54, 227, 255, 0.7);

  /* Transitions */
  --transition-fast: 120ms ease-out;
  --transition-base: 200ms ease-out;
  --transition-slow: 320ms ease-out;

  /* Layout */
  --container-width: 1120px;
  --container-padding-x: var(--space-4);
}

/* ==================================================================
   Reset / Normalize
   ================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
}

html {
  margin: 0;
  padding: 0;
  scroll-behavior: smooth;
  text-size-adjust: 100%; /* iOS font-size adjustment */
}

body {
  margin: 0;
}

h1, h2, h3, h4, h5, h6,
p, figure, blockquote,
dl, dd {
  margin: 0;
}

ul[class], ol[class] {
  margin: 0;
  padding: 0;
  list-style: none;
}

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

button, input, textarea, select {
  margin: 0;
  font: inherit;
  color: inherit;
}

/* Prevent long words from breaking layouts */
body, input, textarea {
  word-wrap: break-word;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ==================================================================
   Base Styles
   ================================================================== */

body {
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
}

main {
  display: block;
}

/* Headings - geometric, slightly condensed display font */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--color-text);
}

h1 {
  font-size: clamp(2.5rem, 4vw, var(--font-size-5xl));
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-4);
}

h2 {
  font-size: clamp(1.75rem, 2.6vw, var(--font-size-3xl));
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-3);
}

h3 {
  font-size: clamp(1.4rem, 2vw, var(--font-size-2xl));
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-2);
}

h4 {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-2);
}

h5 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-1);
}

h6 {
  font-size: var(--font-size-sm);
  margin-bottom: var(--space-1);
}

p {
  margin-bottom: var(--space-3);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
  color: var(--color-text);
}

/* Links - clean, minimal, with neon hover */

a {
  color: var(--color-primary);
  text-decoration: none;
  position: relative;
  transition: color var(--transition-base);
}

a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.15em;
  width: 100%;
  height: 1px;
  transform: scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, var(--color-primary), var(--color-success));
  transition: transform var(--transition-base);
}

a:hover::after,
a:focus-visible::after {
  transform: scaleX(1);
}

a:hover {
  color: #7ef3ff;
}

/* Lists */

ul, ol {
  padding-left: 1.25rem;
  margin-bottom: var(--space-3);
}

/* Code */

code, pre {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

pre {
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background-color: #05060b;
  overflow-x: auto;
}

/* ==================================================================
   Utilities
   ================================================================== */

/* Layout */

.container {
  width: 100%;
  max-width: var(--container-width);
  margin-inline: auto;
  padding-inline: var(--container-padding-x);
}

.section {
  padding-block: var(--space-12);
}

.section--tight {
  padding-block: var(--space-8);
}

/* Flex helpers */

.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

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

.flex-between {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.flex-col {
  display: flex;
  flex-direction: column;
}

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

.gap-xs {
  gap: var(--space-1);
}

.gap-sm {
  gap: var(--space-2);
}

.gap-md {
  gap: var(--space-3);
}

.gap-lg {
  gap: var(--space-4);
}

/* Grid helpers */

.grid {
  display: grid;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--space-6);
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--space-6);
}

@media (max-width: 768px) {
  .grid-2,
  .grid-3 {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Alignment & text */

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

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

.text-uppercase {
  text-transform: uppercase;
}

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

/* Spacing utilities (minimal set for layout tweaks) */

.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-xs { margin-top: var(--space-1) !important; }
.mt-sm { margin-top: var(--space-2) !important; }
.mt-md { margin-top: var(--space-3) !important; }
.mt-lg { margin-top: var(--space-4) !important; }
.mb-xs { margin-bottom: var(--space-1) !important; }
.mb-sm { margin-bottom: var(--space-2) !important; }
.mb-md { margin-bottom: var(--space-3) !important; }
.mb-lg { margin-bottom: var(--space-4) !important; }

/********************
  Screen-reader only
*********************/

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ==================================================================
   Basic Components
   ================================================================== */

/* Button - geometric, neon accent */

.button,
button,
input[type="button"],
input[type="submit"],
input[type="reset"] {
  --btn-bg: var(--color-primary-soft);
  --btn-border: var(--color-primary);
  --btn-color: var(--color-text);

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.6rem;
  border-radius: 999px; /* pill for sleek feel */
  border: 1px solid var(--btn-border);
  background: radial-gradient(circle at 0% 0%, rgba(54, 227, 255, 0.3), transparent 55%),
              linear-gradient(135deg, rgba(54, 227, 255, 0.25), rgba(63, 255, 178, 0.05));
  color: var(--btn-color);
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  text-decoration: none;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    background-color var(--transition-base),
    border-color var(--transition-base),
    color var(--transition-base),
    transform var(--transition-fast),
    box-shadow var(--transition-base);
}

.button::before,
button::before,
input[type="button"]::before,
input[type="submit"]::before,
input[type="reset"]::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(120deg, rgba(54, 227, 255, 0.2), rgba(63, 255, 178, 0.15));
  opacity: 0;
  transition: opacity var(--transition-base);
  pointer-events: none;
}

.button:hover,
button:hover,
input[type="button"]:hover,
input[type="submit"]:hover,
input[type="reset"]:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: var(--shadow-neon);
}

.button:hover::before,
button:hover::before,
input[type="button"]:hover::before,
input[type="submit"]:hover::before,
input[type="reset"]:hover::before {
  opacity: 1;
}

.button:active,
button:active,
input[type="button"]:active,
input[type="submit"]:active,
input[type="reset"]:active {
  transform: translateY(0) scale(0.99);
  box-shadow: var(--shadow-soft);
}

.button--secondary {
  --btn-bg: transparent;
  --btn-border: var(--color-border-strong);
  --btn-color: var(--color-text-muted);
  background: linear-gradient(135deg, rgba(21, 24, 36, 0.9), rgba(10, 11, 18, 0.9));
}

.button--ghost {
  --btn-bg: transparent;
  --btn-border: transparent;
  --btn-color: var(--color-primary);
  background: transparent;
  box-shadow: none;
}

.button:disabled,
button:disabled,
input[type="button"]:disabled,
input[type="submit"]:disabled,
input[type="reset"]:disabled {
  cursor: not-allowed;
  opacity: 0.55;
  box-shadow: none;
  transform: none;
}

/* Inputs - clean, minimal, with focus glow */

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="tel"],
input[type="url"],
textarea,
select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border-subtle);
  background-color: rgba(10, 12, 20, 0.9);
  color: var(--color-text);
  font-size: var(--font-size-sm);
  transition:
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    background-color var(--transition-base);
}

input::placeholder,
textarea::placeholder {
  color: var(--color-text-muted);
}

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 1px rgba(54, 227, 255, 0.9), 0 0 22px rgba(54, 227, 255, 0.45);
}

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

/* Card - geometric panel for content & screenshots */

.card {
  position: relative;
  padding: var(--space-5);
  border-radius: var(--radius-lg);
  background: radial-gradient(circle at 0% 0%, rgba(54, 227, 255, 0.07), transparent 55%),
              linear-gradient(145deg, rgba(14, 18, 32, 0.98), rgba(5, 6, 12, 0.98));
  border: 1px solid rgba(61, 68, 98, 0.8);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  border: 1px solid rgba(54, 227, 255, 0.16);
  mask-image: linear-gradient(135deg, transparent 0, black 30%, black 70%, transparent 100%);
  opacity: 0.7;
  pointer-events: none;
}

.card--minimal {
  background: rgba(12, 14, 24, 0.9);
  box-shadow: none;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.card-title {
  font-size: var(--font-size-lg);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.card-body {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

/* ==================================================================
   Accessibility & Motion
   ================================================================== */

/* Focus styles: sharp neon outline to match theme */

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

button:focus-visible,
.button:focus-visible,
input[type="button"]:focus-visible,
input[type="submit"]:focus-visible,
input[type="reset"]:focus-visible {
  box-shadow: var(--shadow-neon);
}

/* Respect prefers-reduced-motion */

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ==================================================================
   EDGE-specific subtle helpers (generic enough for base)
   ================================================================== */

/* For hero sections with geometric / cube imagery */

.hero {
  position: relative;
  padding-block: var(--space-16);
}

.hero-subtitle {
  font-size: var(--font-size-sm);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.25rem 0.7rem;
  border-radius: var(--radius-pill);
  border: 1px solid rgba(54, 227, 255, 0.4);
  background: radial-gradient(circle at 0% 0%, rgba(54, 227, 255, 0.23), transparent 55%),
              rgba(5, 7, 14, 0.96);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text);
}

.badge--muted {
  border-color: rgba(61, 68, 98, 0.9);
  background: rgba(10, 12, 20, 0.96);
  color: var(--color-text-muted);
}

/* Utility for subtle geometric grid background */

.bg-grid {
  background-image:
    linear-gradient(rgba(37, 41, 56, 0.35) 1px, transparent 1px),
    linear-gradient(90deg, rgba(37, 41, 56, 0.35) 1px, transparent 1px);
  background-size: 40px 40px;
  background-position: -1px -1px;
}

.bg-radial-highlight {
  background-image:
    radial-gradient(circle at 0% 0%, rgba(54, 227, 255, 0.22), transparent 55%),
    radial-gradient(circle at 100% 100%, rgba(63, 255, 178, 0.16), transparent 55%);
}