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

:root {
  /* Color Palette - Dark, Sci-Fi, Industrial */
  --color-bg: #050609; /* deep space black */
  --color-bg-elevated: #0b0e15;
  --color-bg-alt: #111623;

  --color-text: #eef4ff;
  --color-text-muted: #8b94aa;
  --color-text-soft: #6a7286;

  --color-primary: #ff7a1a; /* glowing orange */
  --color-primary-soft: rgba(255, 122, 26, 0.2);

  --color-accent-cyan: #18e0ff; /* neon cyan */
  --color-accent-green: #5cff5c; /* toxic green */

  --color-success: #46d37d;
  --color-warning: #f2b322;
  --color-danger: #ff3b4e;

  --color-border-subtle: #232838;
  --color-border-strong: #3a4159;

  /* Neutral Grays (industrial / metallic) */
  --gray-50: #f5f7fa;
  --gray-100: #e2e6f0;
  --gray-200: #c4cad8;
  --gray-300: #a2a9bc;
  --gray-400: #848ba0;
  --gray-500: #676e84;
  --gray-600: #4b5268;
  --gray-700: #363c4e;
  --gray-800: #202538;
  --gray-900: #121623;

  /* Typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Noto Sans", Ubuntu, Cantarell, "Helvetica Neue", Arial, sans-serif;
  --font-display: "Orbitron", "Rajdhani", system-ui, -apple-system,
    BlinkMacSystemFont, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", "Fira Code", Menlo, Monaco, Consolas,
    "Liberation Mono", "Courier New", monospace;

  --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: 1.15;
  --line-height-snug: 1.3;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.7;

  /* Spacing Scale (0–96px) */
  --space-0: 0;
  --space-1: 0.125rem; /* 2px */
  --space-2: 0.25rem; /* 4px */
  --space-3: 0.375rem; /* 6px */
  --space-4: 0.5rem; /* 8px */
  --space-6: 0.75rem; /* 12px */
  --space-8: 1rem; /* 16px */
  --space-10: 1.25rem; /* 20px */
  --space-12: 1.5rem; /* 24px */
  --space-16: 2rem; /* 32px */
  --space-20: 2.5rem; /* 40px */
  --space-24: 3rem; /* 48px */
  --space-32: 4rem; /* 64px */
  --space-40: 5rem; /* 80px */
  --space-48: 6rem; /* 96px */

  /* Radius */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 18px;
  --radius-full: 999px;

  /* Shadows - harsh, directional sci-fi lighting */
  --shadow-soft: 0 10px 30px rgba(0, 0, 0, 0.55);
  --shadow-strong: 0 22px 60px rgba(0, 0, 0, 0.85);
  --shadow-glow-primary: 0 0 25px rgba(255, 122, 26, 0.55);
  --shadow-glow-cyan: 0 0 22px rgba(24, 224, 255, 0.65);
  --shadow-glow-green: 0 0 22px rgba(92, 255, 92, 0.6);

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

  /* Layout */
  --container-max-width: 1200px;
  --container-padding-x: var(--space-16);

  /* Z-index Layers */
  --z-base: 1;
  --z-overlay: 20;
  --z-modal: 40;
  --z-toast: 60;
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0.01ms linear;
    --transition-med: 0.01ms linear;
    --transition-slow: 0.01ms linear;
  }

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

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

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

html,
body {
  margin: 0;
  padding: 0;
}

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

body {
  min-height: 100vh;
}

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

ul,
ol {
  margin: 0;
  padding: 0;
}

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

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

button {
  border: none;
  background: none;
  padding: 0;
}

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

input::-ms-clear,
input::-ms-reveal {
  display: none;
}

:focus:not(:focus-visible) {
  outline: none;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-md);
  line-height: var(--line-height-normal);
  background-color: var(--color-bg);
  color: var(--color-text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

main {
  display: block;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gray-50);
}

h1 {
  font-size: clamp(2.5rem, 1.8rem + 2.2vw, 3.5rem);
  line-height: var(--line-height-tight);
  margin-bottom: var(--space-12);
}

h2 {
  font-size: clamp(2rem, 1.6rem + 1.5vw, 2.75rem);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-10);
}

h3 {
  font-size: clamp(1.5rem, 1.2rem + 0.8vw, 2rem);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-8);
}

h4 {
  font-size: var(--font-size-xl);
  line-height: var(--line-height-snug);
  margin-bottom: var(--space-6);
}

h5 {
  font-size: var(--font-size-lg);
  line-height: var(--line-height-normal);
  margin-bottom: var(--space-4);
}

h6 {
  font-size: var(--font-size-sm);
  line-height: var(--line-height-normal);
  margin-bottom: var(--space-2);
}

p {
  margin-bottom: var(--space-8);
  color: var(--color-text-muted);
}

strong {
  font-weight: 600;
  color: var(--gray-50);
}

code,
pre {
  font-family: var(--font-mono);
}

a {
  position: relative;
  transition: color var(--transition-med),
    text-shadow var(--transition-med);
}

a:hover {
  color: var(--color-accent-cyan);
  text-shadow: 0 0 12px rgba(24, 224, 255, 0.7);
}

a:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 3px;
}

small {
  font-size: var(--font-size-sm);
}

hr {
  border: none;
  border-top: 1px solid var(--color-border-subtle);
  margin: var(--space-16) 0;
}

/* =====================================================================
   Accessibility Helpers
   ===================================================================== */

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

.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;
}

.sr-only-focusable:active,
.sr-only-focusable:focus {
  position: static;
  width: auto;
  height: auto;
  margin: 0;
  overflow: visible;
  clip: auto;
  white-space: normal;
}

/* =====================================================================
   Utility Classes
   ===================================================================== */

/* Layout: Container */

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

.container--wide {
  max-width: 1440px;
}

.section {
  padding-top: var(--space-32);
  padding-bottom: var(--space-32);
}

.section--dense {
  padding-top: var(--space-24);
  padding-bottom: var(--space-24);
}

/* Flex Helpers */

.flex {
  display: flex;
}

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

.flex-row {
  flex-direction: row;
}

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

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

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

.items-start {
  align-items: flex-start;
}

.items-end {
  align-items: flex-end;
}

.justify-center {
  justify-content: center;
}

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

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

.justify-end {
  justify-content: flex-end;
}

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

.gap-8 {
  gap: var(--space-8);
}

.gap-12 {
  gap: var(--space-12);
}

.gap-16 {
  gap: var(--space-16);
}

/* Grid Helpers */

.grid {
  display: grid;
}

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

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

.grid-gap-8 {
  gap: var(--space-8);
}

.grid-gap-16 {
  gap: var(--space-16);
}

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

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

.text-accent {
  color: var(--color-accent-cyan);
}

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

/* Spacing Utilities (margin/padding) */

.mt-0 {
  margin-top: 0;
}

.mt-8 {
  margin-top: var(--space-8);
}

.mt-16 {
  margin-top: var(--space-16);
}

.mb-0 {
  margin-bottom: 0;
}

.mb-8 {
  margin-bottom: var(--space-8);
}

.mb-16 {
  margin-bottom: var(--space-16);
}

.py-16 {
  padding-top: var(--space-16);
  padding-bottom: var(--space-16);
}

.p-8 {
  padding: var(--space-8);
}

.p-16 {
  padding: var(--space-16);
}

/* Backgrounds & Surfaces */

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

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

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

.bg-grid {
  background-image: linear-gradient(
      rgba(255, 255, 255, 0.035) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      rgba(255, 255, 255, 0.035) 1px,
      transparent 1px
    );
  background-size: 40px 40px, 40px 40px;
}

.shadow-soft {
  box-shadow: var(--shadow-soft);
}

.shadow-strong {
  box-shadow: var(--shadow-strong);
}

.glow-primary {
  box-shadow: var(--shadow-glow-primary);
}

.glow-cyan {
  box-shadow: var(--shadow-glow-cyan);
}

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

/* Buttons - industrial / cinematic primary action */

.btn {
  --btn-bg: var(--color-primary);
  --btn-bg-hover: #ff983f;
  --btn-border: var(--color-border-strong);
  --btn-color: #050609;

  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  padding: 0.75rem 1.75rem;
  border-radius: 999px;
  border: 1px solid var(--btn-border);
  background: radial-gradient(
      circle at 20% 0%,
      rgba(255, 255, 255, 0.3) 0,
      transparent 50%
    ),
    linear-gradient(135deg, var(--btn-bg), #ff4d00);
  color: var(--btn-color);
  font-family: var(--font-display);
  font-size: var(--font-size-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: 0 14px 35px rgba(0, 0, 0, 0.7), var(--shadow-glow-primary);
  transition: transform var(--transition-fast),
    box-shadow var(--transition-fast),
    background var(--transition-med),
    border-color var(--transition-fast),
    filter var(--transition-fast);
}

.btn::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    120deg,
    rgba(255, 255, 255, 0.35),
    transparent 40%,
    transparent 60%,
    rgba(255, 255, 255, 0.25)
  );
  opacity: 0;
  transform: translateX(-40%);
  transition: opacity var(--transition-fast),
    transform var(--transition-med);
  pointer-events: none;
}

.btn:hover {
  background: radial-gradient(
      circle at 0 0,
      rgba(255, 255, 255, 0.4) 0,
      transparent 55%
    ),
    linear-gradient(135deg, var(--btn-bg-hover), #ff5e1c);
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.85), var(--shadow-glow-primary);
  filter: brightness(1.02);
}

.btn:hover::before {
  opacity: 0.75;
  transform: translateX(20%);
}

.btn:active {
  transform: translateY(0) scale(0.99);
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.85);
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent-cyan);
  outline-offset: 4px;
}

.btn--ghost {
  --btn-bg: transparent;
  --btn-bg-hover: rgba(255, 122, 26, 0.14);
  --btn-border: var(--color-border-strong);
  --btn-color: var(--color-text);

  background: linear-gradient(
    135deg,
    rgba(255, 122, 26, 0.22),
    rgba(10, 13, 22, 0.9)
  );
  box-shadow: 0 0 0 1px rgba(255, 122, 26, 0.3);
}

.btn--ghost:hover {
  background: linear-gradient(
    135deg,
    rgba(255, 122, 26, 0.32),
    rgba(10, 13, 22, 0.9)
  );
}

.btn--secondary {
  --btn-bg: #111623;
  --btn-bg-hover: #192033;
  --btn-border: var(--gray-700);
  --btn-color: var(--color-text);

  background: linear-gradient(135deg, #151a29, #050609);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.8);
}

.btn--danger {
  --btn-bg: var(--color-danger);
  --btn-bg-hover: #ff5869;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.45;
  cursor: not-allowed;
  box-shadow: none;
}

/* Inputs */

.field {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.field__label {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-soft);
}

input[type="text"],
input[type="email"],
input[type="password"],
input[type="search"],
input[type="number"],
textarea,
select {
  width: 100%;
  padding: 0.65rem 0.9rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border-subtle);
  background-color: #060812;
  color: var(--color-text);
  font-size: var(--font-size-sm);
  outline: none;
  transition: border-color var(--transition-fast),
    box-shadow var(--transition-fast),
    background-color var(--transition-fast);
}

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

input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  border-color: var(--color-accent-cyan);
  box-shadow: 0 0 0 1px rgba(24, 224, 255, 0.7), var(--shadow-soft);
  background-color: #090d16;
}

input[disabled],
textarea[disabled],
select[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
}

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

/* Card - sci-fi panel for content blocks */

.card {
  position: relative;
  border-radius: var(--radius-lg);
  padding: var(--space-16);
  background:
    radial-gradient(circle at top left, rgba(24, 224, 255, 0.09), transparent 55%),
    radial-gradient(circle at bottom right, rgba(255, 122, 26, 0.1), transparent 55%),
    linear-gradient(135deg, #0b0e18, #050609);
  border: 1px solid rgba(86, 102, 151, 0.5);
  box-shadow: var(--shadow-soft);
  overflow: hidden;
}

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1px solid rgba(24, 224, 255, 0.18);
  opacity: 0.35;
  mix-blend-mode: screen;
  pointer-events: none;
}

.card--ghost {
  background: rgba(4, 6, 14, 0.9);
  border-style: dashed;
}

.card__header {
  margin-bottom: var(--space-12);
}

.card__title {
  font-size: var(--font-size-xl);
  margin-bottom: var(--space-4);
}

.card__subtitle {
  font-size: var(--font-size-sm);
  color: var(--color-text-soft);
}

/* Tag / Pill for categories like class, difficulty etc. */

.tag {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(86, 102, 151, 0.7);
  background: linear-gradient(135deg, rgba(11, 14, 24, 0.95), rgba(4, 6, 12, 0.95));
  color: var(--color-text-soft);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

.tag--danger {
  border-color: rgba(255, 59, 78, 0.7);
  color: #ffb8c0;
}

.tag--success {
  border-color: rgba(70, 211, 125, 0.7);
  color: #bff4d2;
}

/* Media frame (for gameplay / cinematic showcases) */

.media-frame {
  position: relative;
  border-radius: var(--radius-xl);
  overflow: hidden;
  background-color: #050609;
  box-shadow: var(--shadow-strong);
  border: 1px solid rgba(24, 224, 255, 0.3);
}

.media-frame::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top, rgba(24, 224, 255, 0.3), transparent 60%);
  mix-blend-mode: screen;
  opacity: 0.4;
  pointer-events: none;
}

.media-frame img,
.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* =====================================================================
   Thematic Accents (Mining / Combat vibes)
   ===================================================================== */

/* Subtle animated gradient border for high-value resources / CTAs */

.glow-border {
  position: relative;
  border-radius: inherit;
  z-index: 0;
}

.glow-border::before {
  content: "";
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: conic-gradient(
    from 180deg,
    #18e0ff,
    #5cff5c,
    #ff7a1a,
    #ff3b4e,
    #18e0ff
  );
  opacity: 0.95;
  filter: blur(1px);
  z-index: -2;
}

.glow-border::after {
  content: "";
  position: absolute;
  inset: 1px;
  border-radius: inherit;
  background: radial-gradient(
      circle at top left,
      rgba(24, 224, 255, 0.25),
      transparent 55%
    ),
    radial-gradient(
      circle at bottom right,
      rgba(255, 122, 26, 0.3),
      transparent 55%
    ),
    #050609;
  z-index: -1;
}

@keyframes pulse-glow {
  0%,
  100% {
    opacity: 0.7;
  }
  50% {
    opacity: 1;
  }
}

.pulse-glow {
  animation: pulse-glow 2.4s ease-in-out infinite;
}

/* Utility for top-down battle / swarm highlight regions */

.panel-grid {
  position: relative;
  background-color: #050609;
  background-image: linear-gradient(
      rgba(24, 224, 255, 0.045) 1px,
      transparent 1px
    ),
    linear-gradient(
      90deg,
      rgba(24, 224, 255, 0.055) 1px,
      transparent 1px
    );
  background-size: 40px 40px, 40px 40px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(54, 60, 86, 0.8);
}

.panel-grid::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 50% 0,
    rgba(92, 255, 92, 0.25),
    transparent 60%
  );
  opacity: 0.5;
  mix-blend-mode: screen;
  pointer-events: none;
}

/* =====================================================================
   End of base.css
   ===================================================================== */