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

:root {
  --bg: #12121E;
  --card: #1E1E2E;
  --input: #2A2A3E;
  --border: #3A3A4E;
  --text: #FFFFFF;
  --muted: #888899;
  --accent: #7C4DFF;
  --green: #2E7D32;
  --red: #C62828;
  --nav-bg: #1A1A2E;
  --key-bg: #1E1E2E;
  --key-hover: #2A2A3E;
}

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow: hidden;
  user-select: none;
  -webkit-user-select: none;
  -webkit-tap-highlight-color: transparent;
}

#app {
  height: 100%;
  display: flex;
  flex-direction: column;
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}

/* ── Views ───────────────────────────────────────────────────────── */
.view {
  display: none;
  flex: 1;
  flex-direction: column;
  overflow-y: auto;
}
.view.active { display: flex; }

/* ── Dialer View ─────────────────────────────────────────────────── */
#view-dialer {
  padding-bottom: 72px; /* space for nav bar */
}

.display-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: center;
  padding: 40px 24px 10px;
}

.number-display {
  font-size: 40px;
  font-weight: 300;
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
  color: var(--text);
  text-align: center;
  min-height: 48px;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  letter-spacing: 2px;
}

.call-status {
  font-size: 13px;
  color: var(--muted);
  text-align: center;
  margin-top: 8px;
  min-height: 20px;
}

.dialpad-area {
  flex: 2;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 0 24px 24px;
}

.dialpad {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin-bottom: 24px;
}

.dialpad-row {
  display: flex;
  gap: 16px;
  justify-content: center;
}

.dialpad-key {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  background: var(--key-bg);
  color: var(--text);
  font-size: 28px;
  font-weight: 400;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  -webkit-tap-highlight-color: transparent;
}

.dialpad-key:active,
.dialpad-key:focus-visible {
  background: var(--key-hover);
  outline: none;
}

.action-row {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 40px;
}

.action-btn {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: none;
  background: var(--key-bg);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
}

.action-btn:active { background: var(--key-hover); }

.call-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  background: var(--green);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s, transform 0.1s;
  box-shadow: 0 4px 12px rgba(46, 125, 50, 0.4);
}

.call-btn:active {
  background: #388E3C;
  transform: scale(0.95);
}

.call-btn.call-active {
  background: var(--red);
  box-shadow: 0 4px 12px rgba(198, 40, 40, 0.4);
}

.call-btn.call-active:active {
  background: #D32F2F;
}

.spacer { width: 56px; height: 56px; }

/* ── Settings View ──────────────────────────────────────────────── */
#view-settings {
  padding: 24px 24px 80px;
  overflow-y: auto;
}

.settings-header {
  text-align: center;
  padding: 24px 0 16px;
}

.settings-header h1 {
  font-size: 28px;
  font-weight: 600;
  margin-top: 8px;
}

.settings-header p {
  font-size: 14px;
  color: var(--muted);
  margin-top: 4px;
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--card);
  border-radius: 16px;
  padding: 20px;
  margin-bottom: 12px;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.field-group label {
  font-size: 13px;
  color: var(--muted);
  font-weight: 500;
}

.field-group input {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--input);
  color: var(--text);
  font-size: 14px;
  outline: none;
  transition: border-color 0.15s;
}

.field-group input:focus {
  border-color: var(--accent);
}

.field-group input::placeholder {
  color: var(--muted);
  opacity: 0.6;
}

.field-help {
  font-size: 11px;
  color: var(--muted);
  opacity: 0.8;
  line-height: 1.4;
}

.password-wrapper {
  position: relative;
}

.password-wrapper input {
  padding-right: 44px;
}

.toggle-vis {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 6px;
}

.toggle-vis:active { background: rgba(255,255,255,0.1); }

.settings-status {
  font-size: 13px;
  text-align: center;
  min-height: 20px;
  color: var(--muted);
}

.save-btn, .clear-btn {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.15s;
}

.save-btn {
  background: var(--accent);
  color: white;
}

.save-btn:active { opacity: 0.85; }

.clear-btn {
  background: var(--input);
  color: var(--muted);
  border: 1px solid var(--border);
}

.clear-btn:active { background: var(--border); }

.clear-btn.confirm {
  color: var(--red);
  border-color: var(--red);
}

.settings-info {
  margin-top: 4px;
}

.info-card {
  background: var(--card);
  border-radius: 16px;
  padding: 20px;
}

.info-card h3 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 12px;
}

.info-card ol {
  font-size: 12px;
  color: var(--muted);
  line-height: 1.8;
  padding-left: 20px;
}

.info-card a {
  color: var(--accent);
  text-decoration: none;
}

/* ── Login / Enroll Views (public/login.html) ───────────────────── */
#view-signin,
#view-enroll {
  padding: 24px;
  justify-content: center;
}

#view-signin .settings-form,
#view-enroll .settings-form {
  margin-bottom: 0;
}

#view-enroll code {
  font-family: 'SF Mono', 'Cascadia Code', 'Fira Code', monospace;
  color: var(--text);
}

#enrollCode {
  text-align: center;
  letter-spacing: 1px;
  text-transform: uppercase;
}

/* ── Navigation Bar ──────────────────────────────────────────────── */
.nav-bar {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  display: flex;
  background: var(--nav-bg);
  border-top: 1px solid var(--border);
  padding: 8px 0;
  padding-bottom: max(8px, env(safe-area-inset-bottom));
  max-width: 480px;
  margin: 0 auto;
  z-index: 100;
}

.nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  color: var(--muted);
  font-size: 11px;
  cursor: pointer;
  padding: 4px 0;
  transition: color 0.15s;
}

.nav-item.active {
  color: var(--accent);
}

.nav-item svg {
  width: 24px;
  height: 24px;
}

/* ── Call in-progress overlay ─────────────────────────────────────── */
.call-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 200;
  gap: 24px;
  padding: 24px;
}

.call-overlay .number {
  font-size: 32px;
  font-weight: 300;
  font-family: 'SF Mono', 'Cascadia Code', monospace;
  color: var(--text);
}

.call-overlay .status {
  font-size: 16px;
  color: var(--muted);
}

.call-overlay .duration {
  font-size: 24px;
  font-weight: 300;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.call-overlay .end-call-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  background: var(--red);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(198, 40, 40, 0.4);
  transition: transform 0.1s;
}

.call-overlay .end-call-btn:active {
  transform: scale(0.95);
}

/* ── Incoming-call overlay ───────────────────────────────────────── */
.incoming-overlay .status {
  font-size: 16px;
  color: var(--muted);
}

.incoming-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 56px;
  margin-top: 8px;
}

.incoming-btn {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  border: none;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.1s;
}

.incoming-btn:active {
  transform: scale(0.95);
}

.incoming-btn.accept-btn {
  background: var(--green);
  box-shadow: 0 4px 12px rgba(46, 125, 50, 0.4);
}

.incoming-btn.reject-btn {
  background: var(--red);
  box-shadow: 0 4px 12px rgba(198, 40, 40, 0.4);
}

.incoming-btn.reject-btn svg {
  transform: rotate(135deg);
}

/* ── Responsive ──────────────────────────────────────────────────── */
@media (max-width: 400px) {
  .dialpad-key { width: 64px; height: 64px; font-size: 24px; }
  .call-btn { width: 64px; height: 64px; }
  .action-btn { width: 48px; height: 48px; }
  .spacer { width: 48px; height: 48px; }
  .number-display { font-size: 32px; }
}