/* ============================================================
   Hifzhelper — shared components: login, modals, forms, buttons
   ============================================================ */

.pin-box-row {
  display: flex;
  gap: var(--space-sm);
}
.pin-digit {
  width: 100%;
  aspect-ratio: 1;
  text-align: center;
  font-size: 22px;
  padding: 0;
  border: 1px solid var(--color-table-border);
  border-radius: var(--radius-sm);
  background: var(--color-page-bg);
}
.pin-digit:focus {
  outline: none;
  border-color: var(--color-accent);
}

.login-links {
  display: flex;
  justify-content: space-between;
  margin-top: var(--space-md);
}
.link-btn {
  background: none;
  border: none;
  color: var(--color-accent);
  font-size: 12px;
  text-decoration: underline;
  padding: 0;
}
#registerResult {
  font-size: var(--font-size-base);
  color: var(--color-success);
  margin-top: var(--space-sm);
  line-height: 1.5;
}

.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-lg);
}
.login-card {
  width: 100%;
  min-width: 280px; /* safety floor so 25%/50% never gets unusably cramped right at a breakpoint edge */
  background: var(--color-surface);
  border: 1px solid var(--color-table-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}
/* App-wide responsive width protocol (V3.4.2, see --width-tablet/
   --width-desktop in tokens.css): centered by the parent .login-screen's
   flex centering, so no margin:auto needed here. */
@media (min-width: 600px) and (max-width: 899px) {
  .login-card { width: var(--width-tablet); }
}
@media (min-width: 900px) {
  .login-card { width: var(--width-desktop); }
}
.login-card .eyebrow {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-ink-faint);
}
.login-card h1 {
  font-size: 20px;
  margin: var(--space-xs) 0 var(--space-md);
}
.login-card label {
  display: block;
  font-size: var(--font-size-base);
  color: var(--color-ink-soft);
  margin-top: var(--space-md);
  margin-bottom: 4px;
}
.login-card input, .login-card select {
  width: 100%;
  padding: var(--space-sm);
  border: 1px solid var(--color-table-border);
  border-radius: var(--radius-sm);
  background: var(--color-page-bg);
}
.form-hint {
  font-size: 11px;
  color: var(--color-ink-faint);
  margin-top: var(--space-sm);
  line-height: 1.5;
}
.form-error {
  font-size: var(--font-size-base);
  color: var(--color-error);
  margin-top: var(--space-sm);
  min-height: 16px;
}

button.primary {
  font-weight: 600;
  font-size: var(--font-size-base);
  background: var(--color-accent);
  color: #fff;
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-lg);
  width: 100%;
}
@media (min-width: 720px) { button.primary { width: auto; } }
button.primary:disabled { opacity: 0.5; }
button.secondary {
  font-weight: 600;
  font-size: var(--font-size-base);
  background: var(--color-surface);
  color: var(--color-ink);
  border: 1px solid var(--color-table-border);
  border-radius: var(--radius-sm);
  padding: var(--space-sm) var(--space-md);
  width: 100%;
}

.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(43,43,40,0.4);
  display: flex; align-items: flex-end;
  z-index: 300;
}
@media (min-width: 720px) {
  .modal-overlay { align-items: center; justify-content: center; }
}
.modal-card {
  background: var(--color-surface);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: var(--space-lg);
  position: relative;
}
@media (min-width: 720px) {
  .modal-card { border-radius: var(--radius-md); max-width: 480px; }
}
.modal-card .close-btn {
  position: absolute; top: var(--space-md); right: var(--space-md);
  font-size: 20px; color: var(--color-ink-faint);
}
.modal-card h2 { font-size: 16px; margin-bottom: var(--space-md); }
.modal-card label {
  display: block; font-size: var(--font-size-base); color: var(--color-ink-soft);
  margin-top: var(--space-md); margin-bottom: 4px;
}
.modal-card input, .modal-card select, .modal-card textarea {
  width: 100%; padding: var(--space-sm);
  border: 1px solid var(--color-table-border); border-radius: var(--radius-sm);
}
.modal-actions {
  display: flex; flex-direction: column; gap: var(--space-sm); margin-top: var(--space-lg);
}
@media (min-width: 720px) {
  /* Side-by-side once there's room; button.primary/secondary's own
     width:100% would otherwise become a flex-basis and overflow a narrow
     row (CONVENTIONS.md #9), so it's overridden here rather than on the
     button classes themselves. */
  .modal-actions { flex-direction: row; }
  .modal-actions button { flex: 1; width: auto; }
}

/* Icon-as-button (V3.4 design philosophy going forward): no container,
   no border — just an icon, sized as a comfortable tap target. */
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  color: var(--color-ink-soft);
  background: none;
  border: none;
}
.icon-btn svg { width: 20px; height: 20px; }
.icon-btn:active { opacity: 0.6; }
.icon-btn.copied { color: var(--color-success); }

/* Registration-confirmation screen: the student's personal URL, shown as
   read-only text next to a copy icon-button. */
.url-copy-row {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}
.url-copy-row input {
  flex: 1;
  font-family: var(--font-mono);
  font-size: 13px;
}

/* Swipe rail — horizontal-scrolling cards, used wherever there's more
   than one card's worth of content to browse (multiple entries in a day,
   archived reflections, graphical history views). */
.swipe-rail {
  display: flex;
  gap: var(--space-md);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  padding-bottom: var(--space-sm);
  -webkit-overflow-scrolling: touch;
}
.swipe-rail .rail-card {
  flex: 0 0 85%;
  scroll-snap-align: start;
  background: var(--color-surface);
  border: 1px solid var(--color-table-border);
  border-radius: var(--radius-md);
  padding: var(--space-md);
}
@media (min-width: 720px) {
  .swipe-rail .rail-card { flex: 0 0 340px; }
}