/* ============================================================
   danatel — Custom CSS
   Built on Bootstrap 5 dark theme with custom design tokens
   ============================================================ */

/* ── Imports ───────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

/* ── Design Tokens ─────────────────────────────────────────── */
:root {
  --dt-bg: #0d0f14;
  --dt-bg-card: #161a24;
  --dt-bg-card-hover: #1e2436;
  --dt-bg-input: #1e2436;
  --dt-border: rgba(255, 255, 255, 0.08);
  --dt-border-focus: rgba(99, 102, 241, 0.6);

  --dt-primary: #6366f1;
  --dt-primary-light: #818cf8;
  --dt-primary-dark: #4f46e5;
  --dt-primary-glow: rgba(99, 102, 241, 0.25);

  --dt-success: #10b981;
  --dt-warning: #f59e0b;
  --dt-danger:  #ef4444;
  --dt-info:    #3b82f6;

  --dt-text: #f1f5f9;
  --dt-text-muted: #94a3b8;
  --dt-text-placeholder: #64748b;

  --dt-gradient-hero: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  --dt-gradient-card: linear-gradient(145deg, #161a24, #1e2436);

  --dt-radius: 12px;
  --dt-radius-lg: 20px;
  --dt-shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --dt-shadow-lg: 0 8px 48px rgba(0, 0, 0, 0.6);

  --dt-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ── Base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background-color: var(--dt-bg);
  color: var(--dt-text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
}

/* ── Navigation ─────────────────────────────────────────────── */
.dt-navbar {
  background: rgba(13, 15, 20, 0.9);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--dt-border);
  padding: 0.875rem 0;
  transition: var(--dt-transition);
}

.dt-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--dt-text) !important;
}

.dt-brand-icon {
  font-size: 1.4rem;
}

.dt-brand-text {
  font-size: 1.3rem;
  font-weight: 700;
  background: var(--dt-gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.navbar-nav .nav-link {
  color: var(--dt-text-muted) !important;
  font-weight: 500;
  font-size: 0.9rem;
  transition: var(--dt-transition);
  padding: 0.5rem 0.875rem;
  border-radius: 8px;
}

.navbar-nav .nav-link:hover,
.navbar-nav .nav-link.active {
  color: var(--dt-text) !important;
  background: rgba(255, 255, 255, 0.06);
}

.dt-balance-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: rgba(16, 185, 129, 0.15);
  color: var(--dt-success);
  font-weight: 600;
  font-size: 0.875rem;
  padding: 0.375rem 0.75rem;
  border-radius: 999px;
  border: 1px solid rgba(16, 185, 129, 0.3);
  transition: var(--dt-transition);
}

.dt-balance-pill:hover {
  background: rgba(16, 185, 129, 0.25);
}

.dt-dropdown {
  background: var(--dt-bg-card);
  border: 1px solid var(--dt-border);
  border-radius: var(--dt-radius);
  box-shadow: var(--dt-shadow-lg);
}

.dt-dropdown .dropdown-item {
  color: var(--dt-text-muted);
  font-size: 0.9rem;
  padding: 0.6rem 1rem;
  transition: var(--dt-transition);
}

.dt-dropdown .dropdown-item:hover {
  background: rgba(255,255,255,0.06);
  color: var(--dt-text);
}

/* ── Main Content ────────────────────────────────────────────── */
.dt-main {
  flex: 1;
  padding-top: 76px; /* navbar height */
}

/* ── Footer ─────────────────────────────────────────────────── */
.dt-footer {
  padding: 1.5rem 0;
  border-top: 1px solid var(--dt-border);
  margin-top: 3rem;
}

/* ── Cards ──────────────────────────────────────────────────── */
.dt-card {
  background: var(--dt-bg-card);
  border: 1px solid var(--dt-border);
  border-radius: var(--dt-radius-lg);
  box-shadow: var(--dt-shadow);
  transition: var(--dt-transition);
}

.dt-card:hover {
  border-color: rgba(99, 102, 241, 0.3);
  box-shadow: var(--dt-shadow-lg);
}

.dt-card-header {
  padding: 1.5rem 1.5rem 0;
  border-bottom: none;
}

.dt-card-body {
  padding: 1.5rem;
}

/* ── Auth pages ─────────────────────────────────────────────── */
.dt-auth-wrapper {
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.dt-auth-card {
  width: 100%;
  max-width: 440px;
  background: var(--dt-bg-card);
  border: 1px solid var(--dt-border);
  border-radius: var(--dt-radius-lg);
  padding: 2.5rem;
  box-shadow: var(--dt-shadow-lg);
  position: relative;
  overflow: hidden;
}

.dt-auth-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--dt-gradient-hero);
}

.dt-auth-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.dt-auth-subtitle {
  color: var(--dt-text-muted);
  font-size: 0.9rem;
  margin-bottom: 2rem;
}

/* ── Forms ──────────────────────────────────────────────────── */
.form-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--dt-text-muted);
  margin-bottom: 0.4rem;
}

.form-control, .form-select {
  background: var(--dt-bg-input);
  border: 1px solid var(--dt-border);
  border-radius: 10px;
  color: var(--dt-text);
  font-size: 0.95rem;
  padding: 0.7rem 1rem;
  transition: var(--dt-transition);
}

.form-control:focus, .form-select:focus {
  background: var(--dt-bg-input);
  border-color: var(--dt-primary);
  box-shadow: 0 0 0 3px var(--dt-primary-glow);
  color: var(--dt-text);
  outline: none;
}

.form-control::placeholder {
  color: var(--dt-text-placeholder);
}

.form-control.is-invalid {
  border-color: var(--dt-danger);
}

.form-text, .form-control + small {
  font-size: 0.8rem;
  color: var(--dt-text-placeholder);
}

/* ── Buttons ─────────────────────────────────────────────────── */
.btn {
  font-weight: 600;
  border-radius: 10px;
  transition: var(--dt-transition);
  font-size: 0.9rem;
}

.btn-primary {
  background: var(--dt-primary);
  border-color: var(--dt-primary);
  box-shadow: 0 4px 12px var(--dt-primary-glow);
}

.btn-primary:hover {
  background: var(--dt-primary-dark);
  border-color: var(--dt-primary-dark);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
}

.btn-primary:active { transform: translateY(0); }

.btn-success {
  background: var(--dt-success);
  border-color: var(--dt-success);
}

.btn-danger {
  background: var(--dt-danger);
  border-color: var(--dt-danger);
}

.btn-lg {
  padding: 0.875rem 1.75rem;
  font-size: 1rem;
  border-radius: 12px;
}

/* ── Alerts ─────────────────────────────────────────────────── */
.dt-alert {
  border-radius: var(--dt-radius);
  border: none;
  font-size: 0.9rem;
}

.alert-success { background: rgba(16, 185, 129, 0.15); color: #6ee7b7; }
.alert-error,
.alert-danger  { background: rgba(239, 68, 68, 0.15);  color: #fca5a5; }
.alert-warning { background: rgba(245, 158, 11, 0.15); color: #fcd34d; }
.alert-info    { background: rgba(59, 130, 246, 0.15); color: #93c5fd; }

/* ── Page headers ────────────────────────────────────────────── */
.dt-page-header {
  padding: 2.5rem 0 1.5rem;
}

.dt-page-title {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.dt-page-subtitle {
  color: var(--dt-text-muted);
  font-size: 0.95rem;
}

/* ── Dial Page ───────────────────────────────────────────────── */
.dt-dial-wrapper {
  min-height: calc(100vh - 76px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
  background:
    radial-gradient(circle at 20% 20%, rgba(99,102,241,0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(6,182,212,0.06) 0%, transparent 50%),
    var(--dt-bg);
}

.dt-dial-card {
  width: 100%;
  max-width: 440px;
  background: var(--dt-bg-card);
  border: 1px solid var(--dt-border);
  border-radius: var(--dt-radius-lg);
  padding: 2rem;
  box-shadow: var(--dt-shadow-lg);
  position: relative;
  overflow: hidden;
}

.dt-dial-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--dt-gradient-hero);
}

.dt-balance-display {
  text-align: center;
  margin-bottom: 1.5rem;
  padding: 1rem;
  background: rgba(16, 185, 129, 0.08);
  border: 1px solid rgba(16, 185, 129, 0.2);
  border-radius: var(--dt-radius);
}

.dt-balance-amount {
  font-size: 2rem;
  font-weight: 700;
  color: var(--dt-success);
}

.dt-balance-label {
  font-size: 0.75rem;
  color: var(--dt-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Number display (replaces text input) */
.dt-number-display {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--dt-bg-input);
  border: 1px solid var(--dt-border);
  border-radius: 10px;
  padding: 0.6rem 0.85rem 0.6rem 1.1rem;
  min-height: 3.5rem;
  transition: var(--dt-transition);
}

.dt-number-display:focus-within {
  border-color: var(--dt-primary);
  box-shadow: 0 0 0 3px var(--dt-primary-glow);
}

.dt-number-display-text {
  font-size: 1.45rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  color: var(--dt-text);
  font-variant-numeric: tabular-nums;
  flex: 1;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.dt-backspace-btn {
  background: none;
  border: none;
  color: var(--dt-text-muted);
  cursor: pointer;
  padding: 0.25rem 0.35rem;
  border-radius: 6px;
  flex-shrink: 0;
  transition: var(--dt-transition);
  line-height: 1;
}

.dt-backspace-btn:hover {
  color: var(--dt-danger);
  background: rgba(239, 68, 68, 0.12);
}

.dt-backspace-btn:active { transform: scale(0.9); }

/* ── Numeric keypad ────────────────────────────────────────────── */
.dt-keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.dt-key {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--dt-bg-card-hover);
  border: 1px solid var(--dt-border);
  border-radius: 12px;
  padding: 0.7rem 0.5rem;
  cursor: pointer;
  transition: var(--dt-transition);
  line-height: 1.1;
  user-select: none;
  -webkit-user-select: none;
}

.dt-key:hover {
  background: rgba(99, 102, 241, 0.15);
  border-color: rgba(99, 102, 241, 0.4);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.dt-key:active {
  transform: scale(0.94);
  background: rgba(99, 102, 241, 0.25);
  border-color: var(--dt-primary);
  box-shadow: 0 0 0 2px var(--dt-primary-glow);
}

.dt-key-sym:hover {
  background: rgba(6, 182, 212, 0.12);
  border-color: rgba(6, 182, 212, 0.35);
  box-shadow: 0 4px 12px rgba(6, 182, 212, 0.15);
}

.dt-key-sym:active {
  background: rgba(6, 182, 212, 0.25);
  border-color: #06b6d4;
}

.dt-key-num {
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--dt-text);
  line-height: 1;
}

.dt-key-sub {
  font-size: 0.55rem;
  font-weight: 500;
  color: var(--dt-text-muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  line-height: 1.2;
  min-height: 0.75em;
}

/* Locked state — during call setup */
.dt-keypad--locked .dt-key {
  opacity: 0.45;
  pointer-events: none;
  cursor: not-allowed;
}

.dt-call-status {
  text-align: center;
  padding: 0.75rem;
  border-radius: var(--dt-radius);
  font-size: 0.9rem;
  font-weight: 500;
  transition: var(--dt-transition);
  min-height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.dt-call-status.status-idle     { color: var(--dt-text-muted); }
.dt-call-status.status-calling  { background: rgba(245,158,11,0.12); color: #fcd34d; }
.dt-call-status.status-ringing  { background: rgba(59,130,246,0.12); color: #93c5fd; animation: dt-pulse 1.5s ease-in-out infinite; }
.dt-call-status.status-connected { background: rgba(16,185,129,0.12); color: #6ee7b7; }
.dt-call-status.status-ended    { background: rgba(148,163,184,0.08); color: var(--dt-text-muted); }
.dt-call-status.status-failed   { background: rgba(239,68,68,0.12); color: #fca5a5; }

@keyframes dt-pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.6; }
}

.dt-call-timer {
  font-size: 2rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: var(--dt-success);
  text-align: center;
  font-variant-numeric: tabular-nums;
}

.dt-rate-display {
  font-size: 0.8rem;
  color: var(--dt-text-muted);
  text-align: center;
}

.dt-call-btn {
  width: 100%;
  padding: 1rem;
  font-size: 1.1rem;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--dt-transition);
}

.dt-call-btn:active { transform: scale(0.98); }

/* ── Call History ────────────────────────────────────────────── */
.dt-history-row {
  background: var(--dt-bg-card);
  border: 1px solid var(--dt-border);
  border-radius: var(--dt-radius);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  transition: var(--dt-transition);
}

.dt-history-row:hover {
  border-color: rgba(99,102,241,0.3);
  background: var(--dt-bg-card-hover);
}

.dt-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.dt-status-completed  { background: rgba(16,185,129,0.15); color: #6ee7b7; }
.dt-status-failed     { background: rgba(239,68,68,0.15); color: #fca5a5; }
.dt-status-no_answer  { background: rgba(148,163,184,0.1); color: var(--dt-text-muted); }
.dt-status-busy       { background: rgba(148,163,184,0.1); color: var(--dt-text-muted); }
.dt-status-cancelled  { background: rgba(148,163,184,0.1); color: var(--dt-text-muted); }
.dt-status-initiated  { background: rgba(245,158,11,0.12); color: #fcd34d; }
.dt-status-answered   { background: rgba(59,130,246,0.12); color: #93c5fd; }

/* ── Wallet ─────────────────────────────────────────────────── */
.dt-wallet-hero {
  background: linear-gradient(135deg, rgba(99,102,241,0.15), rgba(6,182,212,0.1));
  border: 1px solid rgba(99,102,241,0.2);
  border-radius: var(--dt-radius-lg);
  padding: 2rem;
  text-align: center;
  margin-bottom: 2rem;
}

.dt-wallet-amount {
  font-size: 3rem;
  font-weight: 700;
  color: var(--dt-text);
}

.dt-wallet-reserved {
  color: var(--dt-text-muted);
  font-size: 0.85rem;
}

.dt-tx-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.875rem 1.25rem;
  background: var(--dt-bg-card);
  border: 1px solid var(--dt-border);
  border-radius: var(--dt-radius);
  margin-bottom: 0.5rem;
  transition: var(--dt-transition);
}

.dt-tx-row:hover { border-color: var(--dt-border-focus); }

.dt-tx-amount-positive { color: var(--dt-success); font-weight: 600; }
.dt-tx-amount-negative { color: var(--dt-danger); font-weight: 600; }

/* ── Top-up amounts ──────────────────────────────────────────── */
.dt-amount-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.dt-amount-card {
  background: var(--dt-bg-card);
  border: 2px solid var(--dt-border);
  border-radius: var(--dt-radius);
  padding: 1.25rem;
  text-align: center;
  cursor: pointer;
  transition: var(--dt-transition);
  position: relative;
}

.dt-amount-card:hover {
  border-color: var(--dt-primary);
  background: rgba(99,102,241,0.08);
}

.dt-amount-card.selected {
  border-color: var(--dt-primary);
  background: rgba(99,102,241,0.12);
  box-shadow: 0 0 0 3px var(--dt-primary-glow);
}

.dt-amount-card .check {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
  color: var(--dt-primary);
  display: none;
}

.dt-amount-card.selected .check { display: block; }

.dt-amount-value {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--dt-text);
}

.dt-amount-label {
  font-size: 0.75rem;
  color: var(--dt-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── OTP ─────────────────────────────────────────────────────── */
.dt-otp-input {
  text-align: center;
  font-size: 2rem;
  letter-spacing: 0.4em;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

/* ── Responsive ─────────────────────────────────────────────── */
@media (max-width: 576px) {
  .dt-amount-cards { grid-template-columns: repeat(3, 1fr); gap: 0.5rem; }
  .dt-amount-value { font-size: 1.4rem; }
  .dt-wallet-amount { font-size: 2.25rem; }
  .dt-auth-card { padding: 1.5rem; }
}

/* ── Utility ─────────────────────────────────────────────────── */
.text-gradient {
  background: var(--dt-gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.dt-section { padding: 3rem 0; }