/* ==========================================================================
   DRE Customer Portal — shared stylesheet
   Dependency-free. Used by index.html, login.html, verify.html, dashboard.html
   ========================================================================== */

:root {
  --dre-navy: #0f2942;
  --dre-navy-dark: #0a1c2e;
  --dre-teal: #0f766e;
  --dre-teal-light: #14b8a6;
  --dre-ink: #1b2733;
  --dre-slate: #52606d;
  --dre-slate-light: #8896a5;
  --dre-line: #dfe5eb;
  --dre-bg: #f6f8fa;
  --dre-white: #ffffff;
  --dre-ok-bg: #e8f6f1;
  --dre-ok-text: #0f6b52;
  --dre-warn-bg: #fdf3e7;
  --dre-warn-text: #92600a;
  --dre-err-bg: #fdecec;
  --dre-err-text: #9b2226;
  --dre-radius: 10px;
  --dre-shadow: 0 1px 2px rgba(15, 41, 66, 0.06), 0 4px 16px rgba(15, 41, 66, 0.06);
  --dre-font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  font-family: var(--dre-font);
  color: var(--dre-ink);
  background: var(--dre-bg);
  font-size: 16px;
  line-height: 1.5;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

a { color: var(--dre-teal); text-decoration: none; }
a:hover { text-decoration: underline; }

h1, h2, h3 { color: var(--dre-navy); line-height: 1.25; margin: 0 0 0.5em; }
h1 { font-size: 1.75rem; }
h2 { font-size: 1.3rem; }
h3 { font-size: 1.05rem; }
p { margin: 0 0 1em; color: var(--dre-slate); }

/* ---------------------------------------------------------------- header */
.dre-header {
  background: var(--dre-navy);
  color: #fff;
  padding: 0.9rem 1.5rem;
}
.dre-header-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}
.dre-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.01em;
}
.dre-brand:hover { text-decoration: none; }
.dre-mark {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: 8px;
  background: var(--dre-teal-light);
  color: var(--dre-navy-dark);
  font-weight: 800;
  font-size: 0.85rem;
}
.dre-brand-sub {
  font-weight: 400;
  font-size: 0.78rem;
  color: #c6d3de;
  display: block;
}
.dre-header-actions { display: flex; align-items: center; gap: 1rem; font-size: 0.9rem; }
.dre-header-actions a { color: #dbe7f0; }
.dre-header-actions .dre-user { color: #cfe0ea; }

/* ---------------------------------------------------------------- layout */
.dre-main {
  flex: 1;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  padding: 2rem 1.5rem 3rem;
}
.dre-main.dre-narrow { max-width: 640px; }

.dre-footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--dre-slate-light);
  font-size: 0.82rem;
  border-top: 1px solid var(--dre-line);
  background: var(--dre-white);
}

/* ---------------------------------------------------------------- cards */
.dre-card {
  background: var(--dre-white);
  border: 1px solid var(--dre-line);
  border-radius: var(--dre-radius);
  box-shadow: var(--dre-shadow);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}
.dre-card-tight { padding: 1.1rem 1.4rem; }

.dre-intro { text-align: center; margin-bottom: 2rem; }
.dre-intro p { max-width: 560px; margin-left: auto; margin-right: auto; }

/* ---------------------------------------------------------------- forms */
.dre-form-section { margin-bottom: 1.75rem; }
.dre-form-section:last-of-type { margin-bottom: 0; }
.dre-form-section h3 {
  border-bottom: 1px solid var(--dre-line);
  padding-bottom: 0.5rem;
  margin-bottom: 1rem;
}

.dre-field { margin-bottom: 1.1rem; }
.dre-field label {
  display: block;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--dre-navy);
  margin-bottom: 0.35rem;
}
.dre-field .dre-hint {
  display: block;
  font-weight: 400;
  color: var(--dre-slate-light);
  font-size: 0.8rem;
  margin-top: 0.3rem;
}
.dre-required { color: var(--dre-err-text); }

.dre-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 620px) {
  .dre-row { grid-template-columns: 1fr; }
}

input[type="text"],
input[type="email"],
input[type="tel"],
input[type="number"],
input[type="date"],
select,
textarea {
  width: 100%;
  padding: 0.6rem 0.75rem;
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--dre-ink);
  background: #fff;
  border: 1px solid #c9d3dc;
  border-radius: 7px;
  transition: border-color 0.15s, box-shadow 0.15s;
}
textarea { resize: vertical; min-height: 90px; }
input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--dre-teal);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.15);
}
input[aria-invalid="true"], textarea[aria-invalid="true"] {
  border-color: var(--dre-err-text);
}

.dre-checkbox-field {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
}
.dre-checkbox-field input[type="checkbox"] {
  margin-top: 0.2rem;
  width: 17px;
  height: 17px;
  flex-shrink: 0;
}
.dre-checkbox-field label { font-weight: 400; color: var(--dre-slate); font-size: 0.9rem; }

/* ---------------------------------------------------------------- buttons */
.dre-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.7rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: inherit;
  border-radius: 7px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background 0.15s, opacity 0.15s, box-shadow 0.15s;
}
.dre-btn-primary {
  background: var(--dre-teal);
  color: #fff;
}
.dre-btn-primary:hover { background: #0c5e57; }
.dre-btn-primary:disabled { opacity: 0.6; cursor: not-allowed; }
.dre-btn-secondary {
  background: #fff;
  color: var(--dre-navy);
  border-color: #c9d3dc;
}
.dre-btn-secondary:hover { background: #f2f5f7; }
.dre-btn-block { width: 100%; }
.dre-btn-sm { padding: 0.4rem 0.9rem; font-size: 0.85rem; }
.dre-btn-danger { background: #fff; color: var(--dre-err-text); border-color: #eec5c6; }
.dre-btn-danger:hover { background: var(--dre-err-bg); }

/* ---------------------------------------------------------------- spinner */
.dre-spinner {
  display: inline-block;
  width: 15px;
  height: 15px;
  border: 2px solid rgba(255,255,255,0.4);
  border-top-color: #fff;
  border-radius: 50%;
  animation: dre-spin 0.7s linear infinite;
}
.dre-spinner-dark {
  border-color: rgba(15,41,66,0.2);
  border-top-color: var(--dre-navy);
}
@keyframes dre-spin { to { transform: rotate(360deg); } }

/* ---------------------------------------------------------------- alerts */
.dre-alert {
  border-radius: 8px;
  padding: 0.85rem 1rem;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  display: none;
}
.dre-alert.is-visible { display: block; }
.dre-alert-error { background: var(--dre-err-bg); color: var(--dre-err-text); border: 1px solid #f3c8c9; }
.dre-alert-success { background: var(--dre-ok-bg); color: var(--dre-ok-text); border: 1px solid #b9e3d4; }
.dre-alert-info { background: #eaf2fb; color: #1c4d80; border: 1px solid #c9def4; }
.dre-field-error {
  color: var(--dre-err-text);
  font-size: 0.82rem;
  margin-top: 0.35rem;
  display: none;
}
.dre-field-error.is-visible { display: block; }

/* ---------------------------------------------------------------- states */
.dre-state {
  text-align: center;
  padding: 2rem 1rem;
}
.dre-state-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
  font-size: 1.6rem;
  font-weight: 700;
}
.dre-state-icon.ok { background: var(--dre-ok-bg); color: var(--dre-ok-text); }
.dre-state-icon.err { background: var(--dre-err-bg); color: var(--dre-err-text); }
.dre-state-icon.info { background: #eaf2fb; color: #1c4d80; }

.dre-kv {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.4rem 1rem;
  text-align: left;
  max-width: 360px;
  margin: 1.25rem auto 0;
  font-size: 0.92rem;
}
.dre-kv dt { color: var(--dre-slate); font-weight: 600; }
.dre-kv dd { margin: 0; color: var(--dre-ink); }

/* ---------------------------------------------------------------- claims list */
.dre-stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}
@media (max-width: 620px) {
  .dre-stats-row { grid-template-columns: 1fr; }
}
.dre-stat {
  background: var(--dre-white);
  border: 1px solid var(--dre-line);
  border-radius: var(--dre-radius);
  padding: 1.1rem 1.3rem;
  box-shadow: var(--dre-shadow);
}
.dre-stat .dre-stat-label { font-size: 0.8rem; color: var(--dre-slate-light); text-transform: uppercase; letter-spacing: 0.03em; }
.dre-stat .dre-stat-value { font-size: 1.5rem; font-weight: 700; color: var(--dre-navy); margin-top: 0.2rem; }

.dre-claim-list { display: flex; flex-direction: column; gap: 0.75rem; }
.dre-claim-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background: var(--dre-white);
  border: 1px solid var(--dre-line);
  border-radius: var(--dre-radius);
  padding: 1rem 1.25rem;
  cursor: pointer;
  transition: border-color 0.15s, box-shadow 0.15s;
}
.dre-claim-row:hover { border-color: var(--dre-teal); box-shadow: var(--dre-shadow); }
.dre-claim-main { display: flex; flex-direction: column; gap: 0.2rem; }
.dre-claim-number { font-weight: 700; color: var(--dre-navy); font-size: 0.95rem; }
.dre-claim-sub { font-size: 0.85rem; color: var(--dre-slate); }
.dre-claim-amount { font-weight: 700; color: var(--dre-navy); font-size: 1.05rem; text-align: right; }
.dre-claim-meta { text-align: right; font-size: 0.8rem; color: var(--dre-slate-light); margin-top: 0.15rem; }

.dre-badge {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
  background: #eef1f4;
  color: var(--dre-slate);
}
.dre-badge-new, .dre-badge-under_review { background: #eaf2fb; color: #1c4d80; }
.dre-badge-active, .dre-badge-negotiation { background: var(--dre-warn-bg); color: var(--dre-warn-text); }
.dre-badge-legal { background: #f3e8fd; color: #6b21a8; }
.dre-badge-settled, .dre-badge-closed { background: var(--dre-ok-bg); color: var(--dre-ok-text); }
.dre-badge-write_off, .dre-badge-rejected { background: var(--dre-err-bg); color: var(--dre-err-text); }

/* ---------------------------------------------------------------- claim detail */
.dre-back-link { display: inline-flex; align-items: center; gap: 0.4rem; margin-bottom: 1rem; font-size: 0.9rem; }

.dre-progress {
  display: flex;
  gap: 0.4rem;
  margin: 1.25rem 0 0.4rem;
}
.dre-progress-step {
  flex: 1;
  height: 8px;
  border-radius: 4px;
  background: #e6eaee;
}
.dre-progress-step.is-done { background: var(--dre-teal); }
.dre-progress-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.72rem;
  color: var(--dre-slate-light);
  margin-bottom: 1.25rem;
}

.dre-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.9rem 1.5rem;
  margin-top: 1rem;
}
@media (max-width: 620px) {
  .dre-detail-grid { grid-template-columns: 1fr; }
}
.dre-detail-grid dt { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.03em; color: var(--dre-slate-light); margin: 0; }
.dre-detail-grid dd { margin: 0.15rem 0 0; color: var(--dre-ink); font-size: 0.95rem; }

.dre-doc-list, .dre-note-list { list-style: none; margin: 0; padding: 0; }
.dre-doc-item, .dre-note-item {
  border: 1px solid var(--dre-line);
  border-radius: 8px;
  padding: 0.8rem 1rem;
  margin-bottom: 0.6rem;
}
.dre-doc-item { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.dre-doc-name { font-weight: 600; color: var(--dre-navy); font-size: 0.9rem; }
.dre-doc-meta { font-size: 0.78rem; color: var(--dre-slate-light); }
.dre-note-head { display: flex; justify-content: space-between; font-size: 0.8rem; color: var(--dre-slate-light); margin-bottom: 0.35rem; }
.dre-note-author { font-weight: 700; color: var(--dre-navy); }
.dre-note-body { font-size: 0.92rem; color: var(--dre-ink); white-space: pre-wrap; word-break: break-word; }

.dre-dropzone {
  border: 2px dashed #c9d3dc;
  border-radius: 8px;
  padding: 1.5rem;
  text-align: center;
  color: var(--dre-slate);
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s;
}
.dre-dropzone:hover, .dre-dropzone.is-dragover { border-color: var(--dre-teal); background: #f0faf8; }
.dre-dropzone input[type="file"] { display: none; }

.dre-empty {
  text-align: center;
  padding: 2.5rem 1rem;
  color: var(--dre-slate);
}

/* ---------------------------------------------------------------- utility */
.dre-hidden { display: none !important; }
.dre-mt { margin-top: 1.5rem; }
.dre-center { text-align: center; }
.dre-flex-between { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.dre-small { font-size: 0.85rem; color: var(--dre-slate-light); }