/* ============================================
   dev.zxzx.app — DOS Dark Terminal Interface
   ============================================ */

:root {
  /* DOS terminal palette */
  --dos-bg: #0a0a0a;
  --dos-bg-deep: #050505;
  --dos-panel: #0f0f0f;
  --dos-panel-alt: #141414;
  --dos-border: #333333;
  --dos-border-bright: #555555;
  --dos-green: #33ff33;
  --dos-green-dim: #1a991a;
  --dos-green-dark: #0d4d0d;
  --dos-amber: #ffaa00;
  --dos-amber-dim: #996600;
  --dos-cyan: #00cccc;
  --dos-red: #ff4444;
  --dos-red-dim: #992222;
  --dos-white: #cccccc;
  --dos-gray: #666666;
  --dos-gray-dark: #444444;
  --dos-input-bg: #0a0a0a;
  --dos-titlebar: #0000aa;
  --dos-titlebar-text: #ffffff;

  --font-dos: 'IBM Plex Mono', 'Cascadia Mono', 'Consolas', 'Courier New', monospace;
  --font-vga: 'IBM Plex Mono', 'Courier New', monospace;
}

/* Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  height: 100%;
}

body {
  font-family: var(--font-dos);
  background: var(--dos-bg);
  color: var(--dos-green);
  min-height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  -webkit-font-smoothing: none;
  -moz-osx-font-smoothing: unset;
  overflow-x: hidden;
  font-size: 13px;
  line-height: 1.4;
}

/* CRT Scanlines */
.scanlines {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  background: repeating-linear-gradient(
    0deg,
    transparent,
    transparent 2px,
    rgba(0, 0, 0, 0.08) 2px,
    rgba(0, 0, 0, 0.08) 4px
  );
}

/* CRT screen glow */
.crt-glow {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  background: radial-gradient(
    ellipse at 50% 50%,
    rgba(0, 255, 0, 0.015) 0%,
    transparent 70%
  );
}

/* ── Main Container ── */
#dev-app {
  width: 100%;
  max-width: 820px;
  display: flex;
  flex-direction: column;
  gap: 0;
  position: relative;
  z-index: 1;
  padding: 16px;
}

/* ── DOS Title Bar ── */
.titlebar {
  background: var(--dos-titlebar);
  border: 2px solid var(--dos-border-bright);
  border-bottom: none;
  padding: 3px 6px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.titlebar-left {
  display: flex;
  align-items: center;
  gap: 6px;
}

.titlebar-icon {
  font-size: 14px;
}

.titlebar-text {
  font-family: var(--font-vga);
  font-size: 14px;
  color: var(--dos-titlebar-text);
  font-weight: bold;
  letter-spacing: 1px;
}

.titlebar-controls {
  display: flex;
  gap: 2px;
}

.titlebar-ctrl {
  width: 16px;
  height: 14px;
  background: var(--dos-gray-dark);
  border: 1px outset #888;
  font-size: 9px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--dos-bg);
  font-weight: bold;
  font-family: var(--font-dos);
  cursor: default;
  user-select: none;
}

/* ── Menu Bar ── */
.menu-bar {
  background: var(--dos-white);
  border-left: 2px solid var(--dos-border-bright);
  border-right: 2px solid var(--dos-border-bright);
  padding: 2px 4px;
  display: flex;
  gap: 0;
}

.menu-item {
  font-family: var(--font-dos);
  font-size: 12px;
  color: var(--dos-bg);
  padding: 1px 8px;
  cursor: pointer;
  background: none;
  border: none;
}

.menu-item:hover {
  background: var(--dos-titlebar);
  color: var(--dos-titlebar-text);
}

.menu-item .underline {
  text-decoration: underline;
}

/* ── Tab Bar (DOS-style) ── */
.tab-bar {
  display: flex;
  background: var(--dos-panel);
  border-left: 2px solid var(--dos-border-bright);
  border-right: 2px solid var(--dos-border-bright);
  border-top: 1px solid var(--dos-border);
  padding: 4px 4px 0;
  gap: 2px;
}

.tab-btn {
  font-family: var(--font-dos);
  font-size: 12px;
  padding: 4px 12px;
  background: var(--dos-panel-alt);
  border: 1px solid var(--dos-border);
  border-bottom: none;
  color: var(--dos-gray);
  cursor: pointer;
  transition: all 0.1s;
  position: relative;
  top: 1px;
}

.tab-btn:hover {
  color: var(--dos-green-dim);
  background: var(--dos-panel);
}

.tab-btn.active {
  background: var(--dos-bg);
  color: var(--dos-green);
  border-color: var(--dos-border-bright);
  border-bottom: 1px solid var(--dos-bg);
  z-index: 2;
}

/* ── Panel ── */
.panel {
  background: var(--dos-bg);
  border: 2px solid var(--dos-border-bright);
  overflow: hidden;
}

.panel-header {
  font-family: var(--font-dos);
  font-size: 12px;
  color: var(--dos-amber);
  background: var(--dos-panel-alt);
  padding: 4px 8px;
  border-bottom: 1px solid var(--dos-border);
  font-weight: bold;
}

/* ── Tab Content ── */
.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* ── Status Bar ── */
.status-bar {
  background: var(--dos-panel-alt);
  border: 2px solid var(--dos-border-bright);
  border-top: none;
  padding: 3px 8px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-dos);
  font-size: 11px;
  color: var(--dos-gray);
}

.status-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.status-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lang-bar {
  display: flex;
  gap: 1px;
}

.lang-btn {
  font-family: var(--font-dos);
  font-size: 10px;
  padding: 1px 4px;
  background: var(--dos-panel);
  border: 1px solid var(--dos-border);
  color: var(--dos-gray);
  cursor: pointer;
  transition: all 0.1s;
}

.lang-btn:hover {
  color: var(--dos-green-dim);
  border-color: var(--dos-green-dark);
}

.lang-btn.active {
  background: var(--dos-green-dark);
  color: var(--dos-green);
  border-color: var(--dos-green-dim);
}

/* ── Tool Content Area ── */
.tool-area {
  padding: 10px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.tool-label {
  font-family: var(--font-dos);
  font-size: 12px;
  color: var(--dos-cyan);
  margin-bottom: 2px;
}

.tool-input {
  font-family: var(--font-dos);
  font-size: 12px;
  background: var(--dos-input-bg);
  border: 1px solid var(--dos-border);
  color: var(--dos-green);
  padding: 6px 8px;
  outline: none;
  width: 100%;
  resize: vertical;
  line-height: 1.5;
  transition: border-color 0.15s;
}

.tool-input:focus {
  border-color: var(--dos-green-dim);
  box-shadow: 0 0 4px rgba(0, 255, 0, 0.1);
}

.tool-input::placeholder {
  color: var(--dos-gray-dark);
}

.tool-input-single {
  font-family: var(--font-dos);
  font-size: 12px;
  background: var(--dos-input-bg);
  border: 1px solid var(--dos-border);
  color: var(--dos-green);
  padding: 5px 8px;
  outline: none;
  width: 100%;
  transition: border-color 0.15s;
}

.tool-input-single:focus {
  border-color: var(--dos-green-dim);
  box-shadow: 0 0 4px rgba(0, 255, 0, 0.1);
}

.tool-input-single::placeholder {
  color: var(--dos-gray-dark);
}

/* Buttons */
.tool-btn {
  font-family: var(--font-dos);
  font-size: 12px;
  background: var(--dos-panel-alt);
  border: 1px solid var(--dos-border);
  color: var(--dos-green);
  padding: 5px 16px;
  cursor: pointer;
  transition: all 0.1s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.tool-btn:hover {
  background: var(--dos-green-dark);
  border-color: var(--dos-green-dim);
  color: var(--dos-green);
}

.tool-btn:active {
  background: var(--dos-green-dark);
  border-style: inset;
}

.tool-btn-row {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tool-btn-small {
  font-family: var(--font-dos);
  font-size: 11px;
  background: var(--dos-panel-alt);
  border: 1px solid var(--dos-border);
  color: var(--dos-amber);
  padding: 3px 10px;
  cursor: pointer;
  transition: all 0.1s;
}

.tool-btn-small:hover {
  background: var(--dos-green-dark);
  border-color: var(--dos-green-dim);
  color: var(--dos-green);
}

/* Output area */
.tool-output {
  font-family: var(--font-dos);
  font-size: 12px;
  background: var(--dos-bg-deep);
  border: 1px inset var(--dos-border);
  color: var(--dos-green);
  padding: 8px;
  min-height: 60px;
  max-height: 300px;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
  line-height: 1.5;
}

.tool-output::-webkit-scrollbar {
  width: 8px;
}

.tool-output::-webkit-scrollbar-track {
  background: var(--dos-panel);
}

.tool-output::-webkit-scrollbar-thumb {
  background: var(--dos-border);
}

.tool-output-label {
  font-family: var(--font-dos);
  font-size: 11px;
  color: var(--dos-amber);
  margin-top: 6px;
  margin-bottom: 2px;
}

.tool-output-header {
  font-family: var(--font-dos);
  font-size: 11px;
  color: var(--dos-cyan);
  margin-bottom: 4px;
  padding-bottom: 2px;
  border-bottom: 1px dashed var(--dos-border);
}

/* Colored text utilities */
.text-green { color: var(--dos-green); }
.text-amber { color: var(--dos-amber); }
.text-cyan { color: var(--dos-cyan); }
.text-red { color: var(--dos-red); }
.text-gray { color: var(--dos-gray); }
.text-white { color: var(--dos-white); }

/* ── JWT Decoder ── */
.jwt-section {
  margin-top: 4px;
}

.jwt-part-label {
  font-family: var(--font-dos);
  font-size: 11px;
  font-weight: bold;
  margin-bottom: 2px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.jwt-dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}

.jwt-dot-header { background: var(--dos-cyan); }
.jwt-dot-payload { background: var(--dos-green); }
.jwt-dot-signature { background: var(--dos-red); }

/* ── Epoch Converter ── */
.epoch-now {
  font-family: var(--font-dos);
  font-size: 12px;
  color: var(--dos-amber);
  background: var(--dos-panel-alt);
  border: 1px solid var(--dos-border);
  padding: 6px 10px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.epoch-now-label {
  color: var(--dos-gray);
}

.epoch-now-value {
  color: var(--dos-green);
  font-weight: bold;
}

.epoch-row {
  display: flex;
  gap: 8px;
  align-items: flex-end;
}

.epoch-row .tool-label {
  margin-bottom: 0;
}

.epoch-field {
  flex: 1;
}

.epoch-results {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4px;
}

.epoch-result-item {
  display: flex;
  gap: 6px;
  padding: 3px 6px;
  background: var(--dos-panel-alt);
  border: 1px solid var(--dos-border);
  font-size: 11px;
}

.epoch-result-label {
  color: var(--dos-gray);
  min-width: 90px;
  flex-shrink: 0;
}

.epoch-result-value {
  color: var(--dos-green);
  word-break: break-all;
}

/* ── SQL Formatter ── */
.sql-options {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.sql-option {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-dos);
  font-size: 11px;
  color: var(--dos-gray);
  cursor: pointer;
}

.sql-option input[type="checkbox"] {
  accent-color: var(--dos-green);
  cursor: pointer;
}

.sql-option input[type="radio"] {
  accent-color: var(--dos-green);
  cursor: pointer;
}

/* ── Footer ── */
.dos-footer {
  background: var(--dos-panel-alt);
  border: 2px solid var(--dos-border-bright);
  border-top: none;
  padding: 6px 10px;
  text-align: center;
  font-family: var(--font-dos);
  font-size: 10px;
  color: var(--dos-gray-dark);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--dos-gray);
  text-decoration: none;
  transition: color 0.1s;
}

.footer-link:hover {
  color: var(--dos-green-dim);
}

.footer-sep {
  color: var(--dos-border);
}

/* ── Cursor blink ── */
.cursor-blink {
  animation: blink-cursor 1s step-end infinite;
}

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

/* ── Responsive ── */
@media (max-width: 600px) {
  #dev-app {
    padding: 4px;
  }

  .titlebar-text {
    font-size: 12px;
  }

  .tab-btn {
    font-size: 11px;
    padding: 3px 8px;
  }

  .tool-area {
    padding: 6px;
  }

  .epoch-results {
    grid-template-columns: 1fr;
  }

  .menu-bar {
    display: none;
  }
}

@media (max-width: 400px) {
  .tab-btn {
    font-size: 10px;
    padding: 3px 5px;
  }

  .titlebar-text {
    font-size: 11px;
  }
}