/* ============================================================
   Buku 555 Berhantu — styles.css
   Haunted notebook theme: aged paper, Buku 555 red/blue palette,
   ghost animations. Mobile-first, WCAG AA contrast, ≥48px tap targets.
   ============================================================ */

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

:root {
  /* Buku 555 palette */
  --red:          #B71C1C;   /* deep notebook red */
  --red-dark:     #7F0000;
  --red-light:    #EF9A9A;
  --blue:         #0D47A1;   /* notebook blue stripe */
  --blue-light:   #BBDEFB;

  /* Paper */
  --paper:        #FAF3E0;   /* aged parchment */
  --paper-dark:   #EDE0C4;   /* darker lined area */
  --paper-line:   #C9B99A;   /* faint ruled lines */
  --ink:          #1A1A1A;   /* dark ink */
  --ink-faded:    #5C4A2A;   /* faded ink for secondary text */

  /* Ghostly accent */
  --ghost-glow:   rgba(255, 255, 255, 0.85);
  --overdue-bg:   #FFF3E0;
  --overdue-border: #E65100;

  /* Feedback */
  --success:      #1B5E20;
  --error:        #B71C1C;

  /* Spacing */
  --radius:       6px;
  --shadow:       0 2px 8px rgba(0,0,0,0.18);

  /* Typography */
  --font-body:    'Georgia', 'Times New Roman', serif;
  --font-ui:      system-ui, -apple-system, sans-serif;
}

html {
  font-size: 18px;           /* NFR-2 */
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--paper-dark);
  color: var(--ink);
  min-height: 100dvh;
  background-image:
    repeating-linear-gradient(
      transparent,
      transparent 27px,
      var(--paper-line) 27px,
      var(--paper-line) 28px
    );
  background-attachment: local;
}

/* ============================================================
   Utility
   ============================================================ */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
  border: 0;
}

/* ============================================================
   HEADER
   ============================================================ */
.app-header {
  background: linear-gradient(135deg, var(--red-dark) 0%, var(--red) 100%);
  color: #fff;
  padding: 0.75rem 1rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
  border-bottom: 4px solid var(--blue);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 640px;
  margin: 0 auto;
}

h1 {
  font-size: 1.4rem;
  font-weight: bold;
  letter-spacing: 0.02em;
  text-shadow: 1px 1px 3px rgba(0,0,0,0.5);
}

.app-subtitle {
  font-size: 0.85rem;
  opacity: 0.85;
  font-style: italic;
}

/* ============================================================
   BUTTONS — all ≥48px touch target (NFR-1)
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  min-width: 48px;
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius);
  font-size: 1rem;
  font-family: var(--font-ui);
  cursor: pointer;
  transition: opacity 0.15s, transform 0.1s;
  text-decoration: none;
  white-space: nowrap;
}

.btn:active {
  transform: scale(0.96);
}

.btn-lang {
  background: rgba(255,255,255,0.2);
  color: #fff;
  font-weight: bold;
  border: 1px solid rgba(255,255,255,0.4);
  min-width: 52px;
}
.btn-lang:hover { background: rgba(255,255,255,0.35); }

.btn-mic {
  background: var(--blue);
  color: #fff;
  font-size: 0.95rem;
}
.btn-mic.recording {
  background: var(--red);
  animation: pulse 1s infinite;
}

.btn-add {
  background: var(--blue);
  color: #fff;
  font-weight: bold;
  font-size: 1rem;
}
.btn-add:hover { background: var(--blue-light); color: var(--ink); }

.btn-pay {
  background: var(--success);
  color: #fff;
  font-size: 0.9rem;
}

.btn-wa {
  background: #25D366;
  color: #fff;
  font-size: 0.9rem;
}

.btn-del {
  background: transparent;
  color: var(--red);
  border: 1px solid var(--red);
  font-size: 0.9rem;
}
.btn-del:hover { background: var(--red); color: #fff; }

.btn-toolbar {
  background: var(--paper-dark);
  color: var(--ink-faded);
  border: 1px solid var(--paper-line);
  font-size: 0.9rem;
}
.btn-toolbar:hover { background: var(--paper-line); }

/* ============================================================
   MAIN LAYOUT
   ============================================================ */
.app-main {
  max-width: 640px;
  margin: 0 auto;
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

/* ============================================================
   ENTRY FORM
   ============================================================ */
.entry-section {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 0.75rem;
  box-shadow: var(--shadow);
  border-left: 5px solid var(--blue);
}

.input-row {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
  flex-wrap: wrap;
}

.entry-input {
  flex: 1 1 200px;
  min-height: 48px;
  padding: 0.5rem 0.75rem;
  font-size: 1rem;
  font-family: var(--font-body);
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  outline: none;
  transition: border-color 0.2s;
}
.entry-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 2px var(--blue-light);
}

/* ============================================================
   SUMMARY BAR
   ============================================================ */
.summary-bar {
  background: linear-gradient(90deg, var(--red-dark), var(--red));
  color: #fff;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.total-label {
  font-size: 0.9rem;
  font-style: italic;
  opacity: 0.9;
}

.total-amount {
  font-size: 1.5rem;
  font-weight: bold;
  letter-spacing: 0.03em;
  text-shadow: 1px 1px 2px rgba(0,0,0,0.3);
}

/* ============================================================
   LEDGER
   ============================================================ */
.ledger-section {
  background: var(--paper);
  border-radius: var(--radius);
  padding: 0.75rem;
  box-shadow: var(--shadow);
}

.section-title {
  font-size: 1.1rem;
  color: var(--red-dark);
  margin-bottom: 0.75rem;
  border-bottom: 2px solid var(--red-light);
  padding-bottom: 0.25rem;
}

.ledger-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.empty-msg {
  text-align: center;
  color: var(--ink-faded);
  font-style: italic;
  padding: 2rem 0;
}

/* ---- Customer group ---- */
.customer-section {
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.customer-name {
  background: var(--blue);
  color: #fff;
  font-size: 1rem;
  padding: 0.5rem 0.75rem;
  font-family: var(--font-ui);
}

/* ---- Entry card ---- */
.entry-card {
  padding: 0.75rem;
  border-bottom: 1px solid var(--paper-line);
  background: var(--paper);
  transition: background 0.2s;
}

.entry-card:last-child { border-bottom: none; }

.entry-card.overdue {
  background: var(--overdue-bg);
  border-left: 4px solid var(--overdue-border);
}

.entry-card.paid {
  opacity: 0.55;
  background: var(--paper-dark);
}

.entry-info {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
  margin-bottom: 0.5rem;
}

.entry-item {
  font-weight: bold;
  color: var(--ink);
  font-size: 1.05rem;
}

.entry-qty {
  color: var(--ink-faded);
  font-size: 0.9rem;
}

.entry-amount {
  background: var(--red);
  color: #fff;
  padding: 0.15rem 0.5rem;
  border-radius: 3px;
  font-weight: bold;
  font-size: 0.95rem;
  margin-left: auto;
}

.entry-due {
  font-size: 0.85rem;
  color: var(--ink-faded);
  width: 100%;
  font-style: italic;
}

.overdue-label {
  font-size: 0.8rem;
  color: var(--overdue-border);
  font-weight: bold;
}

.ghost-icon {
  font-size: 1.2rem;
  animation: float 2.5s ease-in-out infinite;
}

.entry-actions {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  margin-top: 0.25rem;
}

/* ---- Paid section ---- */
.paid-section {
  margin-top: 0.75rem;
  border: 1px solid var(--paper-line);
  border-radius: var(--radius);
  overflow: hidden;
}

.paid-section summary {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  background: var(--paper-dark);
  color: var(--ink-faded);
  font-style: italic;
  font-size: 0.9rem;
  list-style: none;
  min-height: 48px;
  display: flex;
  align-items: center;
}

.paid-section summary::-webkit-details-marker { display: none; }
.paid-section[open] summary { background: var(--paper-line); }

/* ============================================================
   FOOTER
   ============================================================ */
.app-footer {
  background: var(--red-dark);
  color: rgba(255,255,255,0.8);
  padding: 0.75rem 1rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  align-items: center;
  justify-content: center;
  border-top: 4px solid var(--blue);
}

.footer-credit {
  width: 100%;
  text-align: center;
  font-size: 0.8rem;
  opacity: 0.7;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  margin-top: 0.25rem;
}

.footer-ghost {
  filter: brightness(2);
}

/* ============================================================
   TOAST
   ============================================================ */
.toast {
  position: fixed;
  bottom: 1.5rem;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: var(--ink);
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 2rem;
  font-size: 0.95rem;
  box-shadow: var(--shadow);
  z-index: 999;
  transition: transform 0.3s ease;
  pointer-events: none;
  max-width: 90vw;
  text-align: center;
}

.toast.show {
  transform: translateX(-50%) translateY(0);
}

.toast.toast-success { background: var(--success); }
.toast.toast-error   { background: var(--error); }

/* ============================================================
   ANIMATIONS
   ============================================================ */
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%       { transform: translateY(-5px); }
}

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

/* ============================================================
   RESPONSIVE — narrow screens keep big buttons
   ============================================================ */
@media (max-width: 400px) {
  html { font-size: 17px; }
  .input-row { flex-direction: column; }
  .btn-mic, .btn-add { width: 100%; }
  .entry-amount { margin-left: 0; }
}

/* ============================================================
   PHONE DIALOG
   ============================================================ */
.phone-dialog {
  margin: auto; /* undo global reset so the native dialog centres */
  inset: 0;
  border: none;
  border-radius: var(--radius);
  box-shadow: 0 8px 32px rgba(0,0,0,0.35);
  background: var(--paper);
  color: var(--ink);
  padding: 0;
  max-width: min(92vw, 400px);
  width: 100%;
}

/* Native <dialog> backdrop */
.phone-dialog::backdrop {
  background: rgba(0,0,0,0.55);
}

.phone-dialog-form {
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.phone-dialog-title {
  font-size: 1.1rem;
  color: var(--red-dark);
  border-bottom: 2px solid var(--red-light);
  padding-bottom: 0.4rem;
}

.phone-dialog-customer {
  font-size: 0.9rem;
  color: var(--ink-faded);
  font-style: italic;
}

.phone-dialog-label {
  font-size: 0.95rem;
  font-weight: bold;
}

.phone-dialog-input {
  min-height: 52px;
  padding: 0.5rem 0.75rem;
  font-size: 1.15rem;
  font-family: var(--font-ui);
  border: 2px solid var(--paper-line);
  border-radius: var(--radius);
  background: var(--paper);
  color: var(--ink);
  outline: none;
  letter-spacing: 0.05em;
  transition: border-color 0.2s;
}
.phone-dialog-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 2px var(--blue-light);
}

.phone-dialog-actions {
  display: flex;
  gap: 0.5rem;
  justify-content: flex-end;
}

.btn-simpan {
  background: var(--blue);
  color: #fff;
  font-weight: bold;
  min-width: 90px;
}
.btn-simpan:hover { opacity: 0.88; }

.btn-batal {
  background: transparent;
  color: var(--ink-faded);
  border: 1px solid var(--paper-line);
  min-width: 80px;
}
.btn-batal:hover { background: var(--paper-line); }

/* "Tukar nombor" inline link */
.link-tukar {
  display: inline-block;
  font-size: 0.78rem;
  color: var(--blue);
  text-decoration: underline;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0.2rem 0.3rem;
  min-height: 32px;
  font-family: var(--font-ui);
  vertical-align: middle;
}
.link-tukar:hover { color: var(--red-dark); }

/* ============================================================
   PRINT — hide chrome, show clean ledger
   ============================================================ */
@media print {
  .app-header, .entry-section, .app-footer, .entry-actions { display: none !important; }
  .app-main { max-width: 100%; padding: 0; }
  body { background: #fff; font-size: 12pt; }
}

/* ---------- Install button ---------- */
.btn-install[hidden] { display: none; }
.btn-install {
  min-height: 48px; padding: 0 14px; margin-left: 8px;
  background: var(--paper); color: var(--red-dark);
  border: 2px solid var(--paper); border-radius: 10px; font-weight: 700;
}

/* ---------- Siapa paling lama hutang ---------- */
.top-debtors-card[hidden] { display: none; }
.top-debtors-card {
  background: #fff8e7; border: 2px dashed var(--red); border-radius: 12px;
  padding: 12px 16px; margin: 0 0 16px;
}
.top-debtors-title { margin: 0 0 8px; font-size: 1.1rem; color: var(--red-dark); }
.top-debtors-list { margin: 0; padding-left: 1.4em; }
.top-debtors-list li { padding: 6px 0; border-bottom: 1px solid var(--paper-line); }
.top-debtors-list li:last-child { border-bottom: none; }
.top-debtors-list li * + * { margin-left: 8px; }
.top-debtor-name { font-weight: 700; }
.top-debtor-amount { color: var(--red); font-weight: 700; }
.top-debtor-status { font-size: 0.9rem; font-style: italic; }
.top-debtor-row.overdue .top-debtor-status { color: var(--red-dark); }