/* ── STORMWAREHOUSE — Dark Theme ── */

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

:root {
  --bg: #1a1a2e;
  --card-bg: #16213e;
  --accent: #e94560;
  --text: #eee;
  --text-muted: #888;
  --border: #2a2a4a;
  --header-h: 54px;
  --tab-h: 44px;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen,
               Ubuntu, Cantarell, 'Helvetica Neue', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
}

/* ── Header ── */
.app-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-h);
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  display: flex;
  align-items: center;
}

.header-inner {
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 0 16px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.app-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: 0.5px;
  color: var(--accent);
}

.app-version {
  font-size: 0.75rem;
  background: var(--accent);
  color: #fff;
  padding: 2px 8px;
  border-radius: 10px;
  font-weight: 600;
}

/* ── Tab Bar ── */
.tab-bar {
  position: fixed;
  top: var(--header-h);
  left: 0;
  right: 0;
  height: var(--tab-h);
  background: var(--card-bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: stretch;
  z-index: 99;
  overflow-x: auto;
}

.tab-btn {
  flex: 0 0 auto;
  padding: 0 24px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  transition: color 0.2s, border-color 0.2s;
  border-bottom: 3px solid transparent;
  white-space: nowrap;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

/* ── Tab Contents ── */
.tab-contents {
  margin-top: calc(var(--header-h) + var(--tab-h));
  padding: 20px 16px;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
}

.tab-content {
  display: none;
}

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

/* ── Tab Header Actions ── */
.tab-header-actions {
  display: flex;
  gap: 10px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 18px;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  border: 1px solid transparent;
  transition: background 0.2s, opacity 0.2s;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-accent {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-accent:hover:not(:disabled) {
  background: #d63850;
}

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-full {
  width: 100%;
  justify-content: center;
  padding: 10px;
  margin-top: 8px;
}

/* ── Cards Grid ── */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 12px;
}

.layout-card {
  background: var(--card-bg);
  border-radius: 8px;
  overflow: hidden;
  position: relative;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  border: 1px solid var(--border);
}

.layout-card:hover {
  transform: scale(1.03);
  box-shadow: 0 4px 20px rgba(233, 69, 96, 0.2);
  border-color: var(--accent);
}

.layout-thumb {
  width: 100%;
  height: auto;
  display: block;
}

.layout-metrics {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 8px 10px;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.85));
  color: #fff;
  font-size: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.metric {
  white-space: nowrap;
}

/* ── Error / Empty ── */
.error-msg,
.empty-msg {
  grid-column: 1 / -1;
  text-align: center;
  padding: 40px 20px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ── Config Form ── */
.config-form {
  max-width: 480px;
  margin-bottom: 24px;
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.form-group input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text);
  font-size: 0.95rem;
}

.form-group input[type="number"]:focus {
  outline: none;
  border-color: var(--accent);
}

.form-group input[type="range"] {
  width: 100%;
  height: 6px;
  -webkit-appearance: none;
  appearance: none;
  background: var(--border);
  border-radius: 3px;
  outline: none;
}

.form-group input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
}

.form-group input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
}

/* ── Run Output ── */
.run-output {
  max-width: 780px;
}

.run-status-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
  padding: 8px 12px;
  background: var(--card-bg);
  border-radius: 6px;
  border: 1px solid var(--border);
}

.run-status-text {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.spinner {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.log-output-box {
  background: #111;
  color: #0f0;
  font-family: 'Courier New', Courier, monospace;
  font-size: 0.78rem;
  line-height: 1.4;
  padding: 12px;
  border-radius: 6px;
  max-height: 60vh;
  overflow-y: auto;
  white-space: pre-wrap;
  word-break: break-all;
}

/* ── About ── */
.about-content h2 {
  margin-bottom: 12px;
}

.about-content h3 {
  margin-top: 20px;
  margin-bottom: 6px;
  color: var(--accent);
  font-size: 1rem;
}

.about-content p {
  margin-bottom: 8px;
  color: #ccc;
}

.about-content ul {
  margin: 6px 0 12px 20px;
  color: #ccc;
}

.about-content li {
  margin-bottom: 4px;
}

/* ── Modal ── */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 200;
  align-items: center;
  justify-content: center;
}

.modal-overlay.open {
  display: flex;
}

.modal-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}

.modal-content img {
  max-width: 100%;
  max-height: 90vh;
  display: block;
  border-radius: 4px;
  border: 1px solid var(--border);
}

.modal-close {
  position: absolute;
  top: -36px;
  right: 0;
  background: transparent;
  border: none;
  color: #fff;
  font-size: 1.6rem;
  cursor: pointer;
  line-height: 1;
  padding: 4px 8px;
}

.modal-close:hover {
  color: var(--accent);
}

/* ── Responsive ── */
@media (max-width: 767px) {
  .cards-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .header-inner {
    padding: 0 10px;
  }

  .app-title {
    font-size: 1rem;
  }

  .tab-btn {
    padding: 0 16px;
    font-size: 0.8rem;
  }
}

@media (max-width: 479px) {
  .cards-grid {
    grid-template-columns: 1fr;
  }

  .tab-contents {
    padding: 14px 10px;
  }

  .config-form {
    max-width: 100%;
  }
}