globals.css

@tailwind base;
@tailwind components;
@tailwind utilities;

/* ============================================================
   PBCTF 5.0. Terminal HUD Design System
   Dark cyberpunk / hacker terminal aesthetic.
   Brand: Point Blank · Capture the Flag
   ============================================================ */

:root {
  /* Surfaces. layered dark stack (void → elevated) */
  --surface-void: #050507;
  --surface-base: #0a0a0c;
  --surface-1: #0e0e11;
  --surface-2: #131318;
  --surface-3: #1a1a21;
  --surface-inset: #07070a;

  /* Text */
  --text-primary: #f5f5f7;
  --text-secondary: rgba(245, 245, 247, 0.72);
  --text-muted: rgba(245, 245, 247, 0.5);
  --text-subtle: rgba(245, 245, 247, 0.32);
  --text-disabled: rgba(245, 245, 247, 0.18);

  /* Brand. neon green stays the identity */
  --brand-primary: #00ff88;
  --brand-primary-hover: #4dffae;
  --brand-primary-press: #00cc6f;
  --brand-primary-ink: #03110a;
  --brand-soft: rgba(0, 255, 136, 0.1);
  --brand-soft-2: rgba(0, 255, 136, 0.18);
  --brand-glow: rgba(0, 255, 136, 0.32);
  --brand-glow-strong: rgba(0, 255, 136, 0.55);

  /* Accent. electric cyan, sparingly */
  --accent-cyan: #38bdf8;
  --accent-cyan-soft: rgba(56, 189, 248, 0.16);

  /* Status */
  --success: #00ff88;
  --success-soft: rgba(0, 255, 136, 0.12);
  --warning: #fbbf24;
  --warning-soft: rgba(251, 191, 36, 0.12);
  --danger: #f43f5e;
  --danger-soft: rgba(244, 63, 94, 0.14);
  --info: #38bdf8;
  --info-soft: rgba(56, 189, 248, 0.12);

  /* Borders */
  --border-hairline: rgba(255, 255, 255, 0.06);
  --border-soft: rgba(255, 255, 255, 0.1);
  --border-default: rgba(255, 255, 255, 0.14);
  --border-strong: rgba(255, 255, 255, 0.24);
  --border-brand: rgba(0, 255, 136, 0.28);
  --border-brand-strong: rgba(0, 255, 136, 0.55);

  /* Shadows / glows */
  --glow-sm: 0 0 12px rgba(0, 255, 136, 0.22);
  --glow-md: 0 0 24px rgba(0, 255, 136, 0.32);
  --glow-lg: 0 0 48px rgba(0, 255, 136, 0.4);
  --shadow-card: 0 1px 0 rgba(255, 255, 255, 0.04) inset, 0 12px 32px rgba(0, 0, 0, 0.4);
  --shadow-modal: 0 24px 64px rgba(0, 0, 0, 0.7), 0 0 0 1px rgba(0, 255, 136, 0.12);

  /* Type system */
  --font-display: "JetBrains Mono", "Space Grotesk", ui-monospace, monospace;
  --font-mono: "JetBrains Mono", ui-monospace, "SF Mono", monospace;
  --font-body: "Lexend", "Space Grotesk", system-ui, -apple-system, sans-serif;
  --font-heading: "Space Grotesk", "Lexend", system-ui, sans-serif;

  /* Radii. terminal: tight */
  --radius-xs: 2px;
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 10px;
  --radius-xl: 14px;

  /* Compatibility shims for legacy shadcn primitives */
  --background: 240 6% 4%;
  --foreground: 240 5% 96%;
  --card: 240 6% 5%;
  --card-foreground: 240 5% 96%;
  --popover: 240 6% 7%;
  --popover-foreground: 240 5% 96%;
  --primary: 152 100% 50%;
  --primary-foreground: 152 80% 6%;
  --secondary: 240 5% 11%;
  --secondary-foreground: 240 5% 92%;
  --muted: 240 5% 11%;
  --muted-foreground: 240 5% 60%;
  --accent: 240 5% 14%;
  --accent-foreground: 240 5% 92%;
  --destructive: 350 89% 60%;
  --destructive-foreground: 240 5% 96%;
  --border: 240 5% 16%;
  --input: 240 5% 13%;
  --ring: 152 100% 50%;
  --radius: 6px;
}

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

  * {
    @apply border-border;
  }

  html {
    background: var(--surface-void);
    color-scheme: dark;
  }

  body {
    background: var(--surface-base);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-feature-settings: "ss01", "cv11";
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
  }

  h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--text-primary);
    letter-spacing: -0.02em;
  }

  ::selection {
    background: rgba(0, 255, 136, 0.35);
    color: var(--text-primary);
  }

  /* Focus ring. accessible, on-brand */
  :focus-visible {
    outline: 2px solid var(--brand-primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
  }

  button:focus-visible,
  a:focus-visible {
    outline: 2px solid var(--brand-primary);
    outline-offset: 3px;
  }
}

/* ============================================================
   Background. animated terminal grid + scanlines
   ============================================================ */

@keyframes grid-drift {
  from { background-position: 0 0; }
  to   { background-position: 40px 40px; }
}

@keyframes scanline-drift {
  0%   { transform: translateY(-100%); }
  100% { transform: translateY(100vh); }
}

@keyframes terminal-blink {
  0%, 49%   { opacity: 1; }
  50%, 100% { opacity: 0; }
}

@keyframes pulse-soft {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.65; transform: scale(0.92); }
}

@keyframes glow-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0, 255, 136, 0.35); }
  50%      { box-shadow: 0 0 0 4px rgba(0, 255, 136, 0); }
}

@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes fade-up {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes glitch-x {
  0%, 100% { transform: translateX(0); }
  20%      { transform: translateX(-1px); }
  40%      { transform: translateX(1px); }
  60%      { transform: translateX(-0.5px); }
  80%      { transform: translateX(0.5px); }
}

@layer utilities {
  .anim-blink {
    animation: terminal-blink 1.05s steps(2) infinite;
  }
  .anim-pulse-soft {
    animation: pulse-soft 2.2s ease-in-out infinite;
  }
  .anim-fade-up {
    animation: fade-up 0.35s cubic-bezier(0.22, 1, 0.36, 1) both;
  }
  .anim-glow-pulse {
    animation: glow-pulse 2.4s ease-out infinite;
  }
  .anim-glitch:hover {
    animation: glitch-x 0.28s linear 1;
  }

  /* Terminal grid background. subtle */
  .bg-terminal-grid {
    background-image:
      linear-gradient(rgba(0, 255, 136, 0.045) 1px, transparent 1px),
      linear-gradient(90deg, rgba(0, 255, 136, 0.045) 1px, transparent 1px);
    background-size: 40px 40px;
    background-position: 0 0;
  }

  .bg-terminal-grid-faint {
    background-image:
      linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
      linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
    background-size: 32px 32px;
  }

  /* Halo glow for hero sections */
  .bg-halo {
    background-image: radial-gradient(
      ellipse 80% 60% at 50% 0%,
      rgba(0, 255, 136, 0.18) 0%,
      rgba(0, 255, 136, 0.06) 28%,
      rgba(0, 255, 136, 0) 65%
    );
  }

  .bg-halo-soft {
    background-image: radial-gradient(
      ellipse 70% 50% at 50% 30%,
      rgba(0, 255, 136, 0.1) 0%,
      rgba(0, 255, 136, 0) 60%
    );
  }

  /* Scanline overlay */
  .scanlines::after {
    content: "";
    position: absolute;
    inset: 0;
    pointer-events: none;
    background-image: repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent 2px,
      rgba(0, 255, 136, 0.025) 3px,
      transparent 4px
    );
    mix-blend-mode: screen;
    z-index: 1;
  }

  /* Mono caret blink */
  .caret::after {
    content: "▌";
    margin-left: 0.15em;
    color: var(--brand-primary);
    animation: terminal-blink 1.05s steps(2) infinite;
  }

  /* HUD corner brackets. use as `<div class="hud-corners">` */
  .hud-corners {
    position: relative;
  }
  .hud-corners::before,
  .hud-corners::after {
    content: "";
    position: absolute;
    width: 10px;
    height: 10px;
    border-color: var(--brand-primary);
    border-style: solid;
    pointer-events: none;
    opacity: 0.7;
  }
  .hud-corners::before {
    top: -1px;
    left: -1px;
    border-width: 1px 0 0 1px;
  }
  .hud-corners::after {
    bottom: -1px;
    right: -1px;
    border-width: 0 1px 1px 0;
  }

  /* Scrollbar utilities */
  .no-scrollbar::-webkit-scrollbar { display: none; }
  .no-scrollbar { -ms-overflow-style: none; scrollbar-width: none; }

  .thin-scrollbar::-webkit-scrollbar {
    width: 6px;
    height: 6px;
  }
  .thin-scrollbar::-webkit-scrollbar-track { background: transparent; }
  .thin-scrollbar::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 3px;
  }
  .thin-scrollbar::-webkit-scrollbar-thumb:hover {
    background: rgba(0, 255, 136, 0.3);
  }

  /* Text utilities */
  .text-balance { text-wrap: balance; }
  .text-mono { font-family: var(--font-mono); }

  /* Glass surface. refined, less heavy */
  .surface-card {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0.005));
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-card);
  }

  .surface-elevated {
    background: var(--surface-2);
    border: 1px solid var(--border-default);
  }

  .surface-inset {
    background: var(--surface-inset);
    border: 1px solid var(--border-hairline);
  }

  /* Card surface.
   * Translucent dark tint so the page's terminal grid reads through the
   * card. The card is still measurably "darker" than the page so it
   * registers as elevated, but the grid pattern is preserved as texture.
   *
   * Lift cues:
   *   - 1px inset top highlight (bevel from above)
   *   - quiet drop shadow
   *
   * NO internal gradients or halos — texture comes from the page grid
   * showing through.
   */
  .card-surface {
    background-color: rgba(16, 16, 21, 0.55);
    box-shadow:
      inset 0 1px 0 rgba(255, 255, 255, 0.05),
      0 1px 2px rgba(0, 0, 0, 0.5),
      0 6px 18px -6px rgba(0, 0, 0, 0.55);
  }
}

/* Reduced motion override */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
  .caret::after {
    opacity: 1 !important;
    animation: none !important;
  }
}

/* Strip number input spinners */
input::-webkit-outer-spin-button,
input::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] { -moz-appearance: textfield; }

/* Legacy selectSlide kept for backward compat (used by a dropdown) */
@keyframes selectSlide {
  0%   { transform: scale(0.98); opacity: 0.8; }
  50%  { transform: scale(1.03); }
  100% { transform: scale(1); opacity: 1; }
}
.animate-selectSlide { animation: selectSlide 0.35s ease-out; }

/* Glass utility classes. kept for compatibility but redefined */
.glass-effect {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.04), rgba(255, 255, 255, 0.01));
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-soft);
}

.glass-effect-light {
  background: rgba(255, 255, 255, 0.025);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid var(--border-hairline);
}

/* Hide the floating reCAPTCHA v3 badge. Per Google's terms, the required
   disclosure is shown inline on each auth form instead (see RecaptchaNotice). */
.grecaptcha-badge {
  visibility: hidden;
}