/* ---------- BASE VARIABLES ---------- */
:root {
  --bg: #000000;
  --bg-grad-top: rgba(0, 0, 0, 0.95);
  --bg-grad-mid: rgba(0, 15, 10, 0.6);
  --bg-grad-bottom: rgba(0, 0, 0, 0.95);

  --panel: rgba(10, 10, 10, 0.6);
  --panel-solid: #0f0f0f;
  --accent: #00ff9f;
  --accent-soft: rgba(0, 255, 159, 0.4);
  --accent-strong: rgba(0, 255, 159, 0.9);
  --text-main: #e5e5e5;
  --text-dim: #888;
  --border: rgba(0,255,159,0.25);
  --border-soft: rgba(0,255,159,0.08);

  --radius-lg: 1rem;
  --radius-sm: 0.5rem;
  --mono: ui-monospace, SFMono-Regular, Consolas, Menlo, monospace;
  --sans: system-ui, Roboto, "Helvetica Neue", Arial, sans-serif;
  --gap: 1rem;

  --scanline-color: rgba(0,255,128,0.07);
  --shadow-neon: 0 0 8px rgba(0,255,159,0.6),
                 0 0 16px rgba(0,255,159,0.4),
                 0 0 32px rgba(0,255,159,0.2);

  --shadow-pink: 0 0 6px rgba(255,0,128,0.4),
                 0 0 16px rgba(255,0,128,0.2);
}

/* ---------- RESET / BASICS ---------- */
* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text-main);
  font-family: var(--sans);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow-x: hidden;
}

/* ---------- BACKGROUND EFFECTS ---------- */

/* faint radial vignette so edges go dark */
.vignette {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 40%,
    rgba(0,255,159,0.07) 0%,
    rgba(0,0,0,0) 40%,
    rgba(0,0,0,0.8) 80%);
  mix-blend-mode: screen;
  z-index: 0;
}

/* holo grid / gradient base */
.crt-bg {
  background-image:
    radial-gradient(circle at 50% 10%, rgba(0,255,159,0.12) 0%, rgba(0,0,0,0) 60%),
    linear-gradient(to bottom,
      var(--bg-grad-top) 0%,
      var(--bg-grad-mid) 50%,
      var(--bg-grad-bottom) 100%);
  background-size: cover;
  background-attachment: fixed;
}

/* animated scanlines overlay */
.scanlines {
  pointer-events: none;
  position: fixed;
  inset: 0;
  background-image: repeating-linear-gradient(
    to bottom,
    rgba(0,0,0,0) 0px,
    rgba(0,0,0,0) 2px,
    var(--scanline-color) 3px,
    rgba(0,0,0,0) 4px
  );
  opacity: 0.4;
  mix-blend-mode: screen;
  z-index: 999; /* above everything for CRT feel but still non-blocking */
  animation: scanScroll 6s linear infinite;
}

@keyframes scanScroll {
  0% { background-position-y: 0; }
  100% { background-position-y: 256px; }
}

/* ---------- HOLO / CARD LOOK ---------- */

.holo-card {
  position: relative;
  background: var(--panel);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-soft);
  box-shadow:
    0 20px 40px rgba(0,0,0,0.9),
    0 0 30px rgba(0,255,159,0.15);
  backdrop-filter: blur(6px) saturate(140%);
  -webkit-backdrop-filter: blur(6px) saturate(140%);
  z-index: 1;
}

/* subtle angled sheen */
.holo-card:before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(
    circle at 80% 0%,
    rgba(255,0,128,0.15) 0%,
    rgba(0,0,0,0) 60%
  );
  pointer-events: none;
  mix-blend-mode: screen;
}

/* neon edge frame */
.neon-border {
  box-shadow:
    0 0 4px rgba(0,255,159,0.6),
    0 0 12px rgba(0,255,159,0.4),
    0 0 24px rgba(0,255,159,0.2),
    inset 0 0 6px rgba(0,255,159,0.25),
    inset 0 0 24px rgba(0,0,0,0.8);
  border: 1px solid var(--border);
}

/* ---------- HEADER / FOOTER ---------- */

.app-header {
  border-bottom: 1px solid var(--border);
  padding: var(--gap);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--gap);
  background: rgba(5,5,5,0.6);
}

.title-block h1 {
  margin: 0;
  font-size: 1.1rem;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: -0.03em;
  text-shadow: var(--shadow-neon);
}

.subtitle {
  margin: 0.25rem 0 0;
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.2;
  text-shadow: 0 0 4px rgba(0,0,0,0.8);
}

.glow-text {
  color: var(--accent);
  text-shadow: var(--shadow-neon);
}

/* cyber flicker pulse on main CTA */
.flicker {
  animation: flickerAnim 2.4s infinite steps(2);
}
@keyframes flickerAnim {
  0%, 100% { box-shadow: var(--shadow-neon); }
  50% { box-shadow: 0 0 2px rgba(0,0,0,0.5); }
}

/* footer */
.footer {
  font-size: 0.6rem;
  line-height: 1.4;
  color: var(--text-dim);
  text-align: center;
  padding: 1rem;
  border-top: 1px solid var(--border);
  background: rgba(5,5,5,0.6);
  text-shadow: 0 0 6px rgba(0,255,159,0.4), 0 0 16px rgba(255,0,128,0.2);
}

/* ---------- LAYOUT ---------- */

.layout {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--gap);
  gap: var(--gap);
  position: relative;
  z-index: 1;
}

@media(min-width: 800px) {
  .layout {
    flex-direction: row;
    align-items: stretch;
  }
}

.controls {
  padding: var(--gap);
  flex: 0 0 auto;
  max-width: 400px;
}

.output {
  padding: var(--gap);
  flex: 1;
  min-height: 250px;
  display: flex;
  flex-direction: column;
}

/* ---------- LABELS ---------- */

.section-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  color: var(--accent);
  letter-spacing: 0.07em;
  margin-bottom: 0.5rem;
  font-family: var(--mono);
  text-shadow: var(--shadow-neon);
}

.section-label.small {
  margin-top: 1.5rem;
  color: var(--text-dim);
  text-shadow: var(--shadow-pink);
}

/* ---------- BUTTONS ---------- */

.btn-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill,minmax(min(160px,100%),1fr));
  gap: 0.5rem;
}

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.btn {
  -webkit-appearance: none;
  appearance: none;
  background: #111;
  color: var(--text-main);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  line-height: 1.2;
  font-weight: 500;
  padding: 0.8rem 0.9rem;
  text-align: center;
  width: 100%;
  font-family: var(--sans);
  position: relative;
  box-shadow:
    0 0 8px rgba(0,255,159,0.2),
    0 20px 30px rgba(0,0,0,0.8);
}

.btn:active {
  background: #000;
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: var(--shadow-neon);
}

/* big green pill button */
.btn-accent {
  background: radial-gradient(circle at 20% 20%, var(--accent-strong) 0%, #003a23 60%);
  color: #000;
  border: 1px solid var(--accent);
  font-weight: 600;
  text-shadow: 0 0 4px rgba(0,0,0,0.8);
  box-shadow:
    0 0 8px rgba(0,255,159,0.6),
    0 0 16px rgba(0,255,159,0.4),
    0 0 32px rgba(0,255,159,0.2),
    0 20px 30px rgba(0,0,0,0.9);
}

.btn-accent:active {
  filter: brightness(0.8);
  color: #000;
  box-shadow: var(--shadow-neon);
}

.wide {
  flex: 1 1 auto;
  min-width: 200px;
  font-size: 0.85rem;
}

.small-btn {
  flex: 1 1 auto;
  min-width: 120px;
  font-size: 0.7rem;
  padding: 0.6rem 0.7rem;
}

/* add neon outline hover/focus for normal buttons */
.neon-btn {
  transition: box-shadow 0.12s, border-color 0.12s, color 0.12s, background 0.12s;
}
.neon-btn:active {
  box-shadow: var(--shadow-neon);
  border-color: var(--accent);
  color: var(--accent);
  background: #000;
}

/* ---------- LOG WINDOW ---------- */

.log-window {
  flex: 1 1 auto;
  background: #000;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.75rem;
  font-family: var(--mono);
  font-size: 0.8rem;
  line-height: 1.4;
  color: var(--text-main);
  overflow-y: auto;
  white-space: pre-wrap;
  box-shadow:
    inset 0 0 12px rgba(0,255,159,0.15),
    0 0 24px rgba(0,0,0,0.9);
  position: relative;
}

/* subtle fake terminal glow */
.code-term {
  text-shadow:
    0 0 4px rgba(0,255,159,0.5),
    0 0 8px rgba(0,255,159,0.2);
}

/* individual rolled entries */
.log-entry {
  border-left: 2px solid var(--accent);
  padding-left: 0.5rem;
  margin-bottom: 0.75rem;
  box-shadow: -4px 0 12px rgba(0,255,159,0.4);
}

.log-entry .label {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  text-shadow: var(--shadow-neon);
}

.copy-status {
  min-height: 1rem;
  font-size: 0.7rem;
  color: var(--accent);
  padding-left: 0.25rem;
  text-shadow: var(--shadow-neon);
}