:root {
  --bg: rgba(0, 0, 0, 0.55);
  --card: rgba(20, 22, 26, 0.75);
  --text: #f3f5f7;
  --muted: #aab2bd;
  --accent: #1ec6d8;         /* slightly brighter for better contrast */
  --accent-contrast: #041a18; /* dark text on bright accent */
  --border: rgba(255, 255, 255, 0.12);
  --danger: #e55353;
  --shadow: 0 8px 24px rgba(0, 0, 0, 0.35);

  /* Focus ring */
  --focus-ring: rgba(30, 198, 216, 0.6);
}

* { box-sizing: border-box; }

/* Scrolling and layout baseline:
   - Avoid hard 100% heights that can lock scroll on some browsers
   - Ensure vertical scrolling is always possible
*/
html {
  min-height: 100%;
}

body {
  min-height: 100vh;
  margin: 0;
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
}

.page-container {
  position: relative;
  z-index: 2;
  min-height: 100%;
  padding: 1rem;
  /* Removed the dark overlay to restore the lighter, glassy UI */
  background: none;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin: 0 auto 1rem auto;
  max-width: 1100px;
}

.app-title {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: 0.25px;
}

.header-actions .btn + .btn { margin-left: 0.5rem; }

.card {
  margin: 0 auto;
  max-width: 1100px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  box-shadow: var(--shadow);
  backdrop-filter: blur(6px);
}

.controls-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

/* Button system (improved contrast and affordance) */
.btn {
  --btn-bg: #2e3340;
  --btn-fg: var(--text);
  --btn-bg-hover: #3b4152;
  --btn-bg-active: #474e62;

  appearance: none;
  -webkit-appearance: none;
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255,255,255,0.06), rgba(0,0,0,0.10)), var(--btn-bg);
  color: var(--btn-fg);
  padding: 0.65rem 1rem;
  border-radius: 12px;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.04) inset,
    0 8px 18px rgba(0,0,0,0.28);
}

.btn:hover {
  background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(0,0,0,0.14)), var(--btn-bg-hover);
  box-shadow:
    0 1px 0 rgba(255,255,255,0.05) inset,
    0 10px 22px rgba(0,0,0,0.32);
}

.btn:active {
  background: linear-gradient(180deg, rgba(0,0,0,0.10), rgba(0,0,0,0.18)), var(--btn-bg-active);
  transform: translateY(1px);
  box-shadow:
    0 0 0 rgba(0,0,0,0),
    inset 0 1px 3px rgba(0,0,0,0.26);
}

.btn:focus-visible {
  outline: 2px solid var(--focus-ring);
  outline-offset: 2px;
  box-shadow: 0 0 0 3px var(--focus-ring), 0 8px 18px rgba(0,0,0,0.28);
}

/* High-visibility primary buttons (applies to “Call now” and others using btn-primary) */
.btn-primary {
  --btn-bg: var(--accent);
  --btn-fg: var(--accent-contrast);
  --btn-bg-hover: #28d4e7; /* lighter hover */
  --btn-bg-active: #1ab3c3; /* pressed */
  border-color: rgba(0,0,0,0.0);
  color: var(--btn-fg);
  background: linear-gradient(180deg, rgba(255,255,255,0.10), rgba(0,0,0,0.12)), var(--btn-bg);
  text-shadow: 0 1px 0 rgba(0,0,0,0.12);
}

.btn-primary:hover {
  background: linear-gradient(180deg, rgba(255,255,255,0.14), rgba(0,0,0,0.12)), var(--btn-bg-hover);
}

.btn-primary:active {
  background: linear-gradient(180deg, rgba(0,0,0,0.10), rgba(0,0,0,0.18)), var(--btn-bg-active);
}

/* Secondary retains subtlety but improves contrast slightly */
.btn-secondary {
  --btn-bg: #2a2f3b;
  --btn-bg-hover: #343a49;
  --btn-bg-active: #3c4356;
}

button:disabled,
.btn:disabled,
[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.65;
  filter: grayscale(8%);
}

.status-area {
  min-height: 1.25rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.muted { color: var(--muted); font-size: 0.9rem; }

hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1rem 0;
}

/* Admin panel */
.admin-panel__header { margin-bottom: 0.75rem; }
.env-editor {
  width: 100%;
  overflow-x: auto;
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  background: rgba(0, 0, 0, 0.2);
}

.env-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}
.env-table th, .env-table td {
  border-bottom: 1px solid var(--border);
  padding: 0.5rem 0.35rem;
  vertical-align: top;
}
.env-table th {
  text-align: left;
  color: var(--muted);
  font-weight: 600;
}
.env-table input, .env-table select, .env-table textarea {
  width: 100%;
  background: #1f2430;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.4rem 0.55rem;
  font-family: inherit;
  font-size: 0.95rem;
}

/* Make table rows a little more touch-friendly */
.env-table tbody tr {
  padding: 0.5rem 0;
}

/* Skeleton */
.skeleton-row {
  height: 1.25rem;
  margin: 0.35rem 0;
  background: linear-gradient(90deg, rgba(255,255,255,0.06), rgba(255,255,255,0.12), rgba(255,255,255,0.06));
  background-size: 300% 100%;
  animation: shimmer 1.2s infinite;
  border-radius: 6px;
}

@keyframes shimmer {
  0% { background-position: 0% 0; }
  100% { background-position: 300% 0; }
}

.form-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 0.75rem;
}

/* Modal */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.55);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10;
}
.modal[aria-hidden="false"] { display: flex; }
.modal__dialog {
  width: min(640px, calc(100vw - 2rem));
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  box-shadow: var(--shadow);
}
.modal__header, .modal__footer {
  padding: 0.75rem 0.9rem;
  border-bottom: 1px solid var(--border);
}
.modal__footer { border-top: 1px solid var(--border); border-bottom: none; display: flex; justify-content: flex-end; gap: 0.5rem; }
.modal__body { padding: 0.9rem; }
.modal__close {
  appearance: none;
  border: none;
  background: transparent;
  color: var(--text);
  font-size: 1.25rem;
  cursor: pointer;
  float: right;
}

textarea#greetingInput {
  width: 100%;
  resize: vertical;
  min-height: 3rem;
  background: #1f2430;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.6rem 0.7rem;
}

/* Toast */
.toast {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  z-index: 12;
  background: rgba(26, 28, 35, 0.98);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.7rem 0.9rem;
  min-width: 260px;
  max-width: min(480px, calc(100vw - 2rem));
  box-shadow: var(--shadow);
  opacity: 0;
  transform: translateY(8px);
  pointer-events: none;
  transition: opacity 0.18s ease, transform 0.18s ease;
}
.toast--show {
  opacity: 1;
  transform: translateY(0);
}
.alert {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.6rem 0.9rem;
  background: rgba(229, 83, 83, 0.15);
  color: #ffd8d8;
}

/* Forms */
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.5rem;
}
.form-help {
  color: var(--muted);
  margin-top: 0.5rem;
}

/* Responsive adjustments for mobile/narrow screens */
@media (max-width: 960px) {
  .page-container { padding: 0.75rem; }
  .card { padding: 0.75rem; border-radius: 10px; }
  .controls-row { gap: 0.5rem; }
  .btn { padding: 0.75rem 0.9rem; font-size: 1rem; border-radius: 12px; }
  .app-title { font-size: 1.15rem; }
}

/* Admin env table stacked layout on small screens */
@media (max-width: 820px) {
  .page-header { padding: 0 0.5rem; align-items: flex-start; gap: 0.5rem; }
  .form-grid { grid-template-columns: 1fr; }
  .controls-row { justify-content: flex-start; }
  .env-table thead { display: none; }
  .env-table, .env-table tbody, .env-table tr, .env-table td, .env-table th {
    display: block;
    width: 100%;
  }
  .env-table tbody tr {
    padding: 0.6rem 0.5rem;
    margin-bottom: 0.4rem;
    border: 1px solid rgba(255,255,255,0.04);
    border-radius: 8px;
    background: rgba(0,0,0,0.04);
  }
  .env-table td {
    padding: 0.25rem 0;
    border: none;
  }
  .env-table td .env-key {
    display: block;
    font-size: 0.9rem;
    color: var(--muted);
    margin-bottom: 0.35rem;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, 'Liberation Mono', 'Courier New', monospace;
  }
  .env-table td .env-value {
    width: 100%;
  }
  .env-table td .env-value input, .env-table td .env-value select, .env-table td .env-value textarea {
    width: 100%;
    padding: 0.6rem 0.7rem;
    font-size: 0.95rem;
  }
  .modal__dialog { width: calc(100% - 1.5rem); border-radius: 10px; }
  .toast { left: 1rem; right: 1rem; bottom: 1rem; max-width: calc(100% - 2rem); }
}

/* Extra small screens */
@media (max-width: 420px) {
  .btn { padding: 0.72rem 0.8rem; font-size: 0.96rem; }
  .app-title { font-size: 1rem; }
  .card { padding: 0.6rem; }
  .status-area { font-size: 0.9rem; }
}