/* ═══════════════════════════════════════════════════════
   VetTrack Pro — App Stylesheet
   Night mode: Black + Green   |   Day mode: White + Gold
═══════════════════════════════════════════════════════ */

/* ── Theme Variables ────────────────────────────────── */
:root[data-theme="dark"] {
  --bg:           #0a0f0a;
  --bg2:          #0e160e;
  --bg-card:      #111c11;
  --bg-sidebar:   #0c150c;
  --bg-input:     #0f1a0f;
  --border:       #1a331a;
  --border-soft:  #152815;
  --text:         #dff5df;
  --text2:        #8cb88c;
  --text-muted:   #4a664a;
  --accent:       #00c853;
  --accent2:      #00e676;
  --accent-dim:   rgba(0,200,83,.12);
  --accent-glow:  rgba(0,200,83,.22);
  --danger:       #ff5252;
  --warning:      #ffab40;
  --info:         #40c4ff;
  --success:      #69f0ae;
  --nav-bg:       rgba(10,15,10,.97);
  --shadow:       0 4px 32px rgba(0,0,0,.55);
  --shadow-sm:    0 2px 8px rgba(0,0,0,.4);
  --scrollbar-bg: #0e160e;
  --scrollbar-fg: #1a331a;
  --radius:       .5rem;
  --radius-sm:    .35rem;
}

:root[data-theme="light"] {
  --bg:           #fafaf6;
  --bg2:          #f5f0e8;
  --bg-card:      #ffffff;
  --bg-sidebar:   #fff8ed;
  --bg-input:     #faf6ec;
  --border:       #e2cfa0;
  --border-soft:  #f0e4c0;
  --text:         #1a1200;
  --text2:        #5a4810;
  --text-muted:   #9a8840;
  --accent:       #c08020;
  --accent2:      #e09830;
  --accent-dim:   rgba(192,128,32,.1);
  --accent-glow:  rgba(192,128,32,.2);
  --danger:       #c62828;
  --warning:      #e65100;
  --info:         #0277bd;
  --success:      #2e7d32;
  --nav-bg:       rgba(250,250,246,.97);
  --shadow:       0 4px 24px rgba(0,0,0,.08);
  --shadow-sm:    0 2px 8px rgba(0,0,0,.05);
  --scrollbar-bg: #f5f0e8;
  --scrollbar-fg: #e2cfa0;
  --radius:       .5rem;
  --radius-sm:    .35rem;
}

/* ── Reset ──────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 15px; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: background .3s, color .3s;
}
a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent2); text-decoration: underline; }
img { max-width: 100%; }

/* ── Scrollbar ──────────────────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-bg); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-fg); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ── Navbar ─────────────────────────────────────────── */
.vtk-navbar {
  position: sticky; top: 0; z-index: 1050;
  background: var(--nav-bg);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  display: flex;
  align-items: center;
  gap: .75rem;
  padding: .55rem 1.25rem;
  height: 58px;
}
.vtk-hamburger {
  background: none; border: 1px solid var(--border);
  border-radius: var(--radius-sm); padding: .3rem .5rem;
  color: var(--text2); cursor: pointer; display: flex; align-items: center;
  font-size: 1.15rem; flex-shrink: 0;
  transition: all .2s;
}
.vtk-hamburger:hover { border-color: var(--accent); color: var(--accent); }
.vtk-brand {
  display: flex; align-items: center; gap: .5rem;
  font-weight: 700; font-size: 1.1rem; color: var(--accent);
  text-decoration: none; flex-shrink: 0;
}
.vtk-brand:hover { color: var(--accent2); text-decoration: none; }
.brand-icon {
  width: 32px; height: 32px;
  background: var(--accent-dim); border: 1px solid var(--accent);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center; font-size: .95rem;
}
.vtk-nav-center {
  display: flex; align-items: center; gap: .2rem; flex: 1;
}
.vtk-nav-center .nav-link {
  color: var(--text2); padding: .38rem .7rem; border-radius: var(--radius-sm);
  font-size: .86rem; font-weight: 500; white-space: nowrap;
  transition: all .2s; text-decoration: none;
}
.vtk-nav-center .nav-link:hover,
.vtk-nav-center .nav-link.active {
  color: var(--accent); background: var(--accent-dim);
}
.vtk-nav-right {
  display: flex; align-items: center; gap: .5rem; margin-left: auto;
}
.theme-wrap { display: flex; align-items: center; gap: .4rem; }
.theme-icon  { font-size: .95rem; }
.theme-toggle {
  width: 46px; height: 24px; border-radius: 12px;
  background: var(--border); border: none; cursor: pointer;
  position: relative; transition: background .3s;
}
.theme-toggle::after {
  content: ''; position: absolute; top: 3px; left: 3px;
  width: 18px; height: 18px; border-radius: 50%;
  background: var(--accent); transition: transform .3s;
}
[data-theme="light"] .theme-toggle::after { transform: translateX(22px); }

/* ── Dropdown ────────────────────────────────────────── */
.vtk-dropdown { position: relative; }
.vtk-dropdown-toggle {
  background: none; border: none; color: var(--text2);
  font-size: .86rem; font-weight: 500; cursor: pointer;
  padding: .38rem .7rem; border-radius: var(--radius-sm);
  display: flex; align-items: center; gap: .35rem;
  transition: all .2s; white-space: nowrap;
}
.vtk-dropdown-toggle:hover { color: var(--accent); background: var(--accent-dim); }
.vtk-dropdown-menu {
  display: none; position: absolute; top: calc(100% + 4px); left: 0;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); min-width: 180px; z-index: 200;
  padding: .3rem 0; box-shadow: var(--shadow);
}
.vtk-dropdown-menu-right { left: auto; right: 0; }
.vtk-dropdown-menu a, .vtk-dropdown-menu button {
  display: block; padding: .5rem 1rem;
  color: var(--text2); font-size: .86rem; text-decoration: none;
  background: none; border: none; width: 100%; text-align: left;
  cursor: pointer; transition: all .15s;
}
.vtk-dropdown-menu a:hover, .vtk-dropdown-menu button:hover {
  color: var(--accent); background: var(--accent-dim); text-decoration: none;
}
.vtk-dropdown.open .vtk-dropdown-menu { display: block; }

/* ── Sidebar ─────────────────────────────────────────── */
.vtk-layout { display: flex; flex: 1; }
.vtk-sidebar {
  width: 238px; flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column; gap: .1rem;
  padding: 1.25rem 0;
  transition: transform .3s;
}
.sidebar-group {
  padding: .25rem 1.1rem .3rem;
  font-size: .68rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .09em;
  color: var(--text-muted);
}
.sidebar-link {
  display: flex; align-items: center; gap: .6rem;
  padding: .48rem 1.25rem;
  color: var(--text2); text-decoration: none;
  font-size: .875rem; font-weight: 500;
  border-left: 3px solid transparent;
  transition: all .2s;
}
.sidebar-link i { width: 18px; text-align: center; font-size: .95rem; }
.sidebar-link:hover, .sidebar-link.active {
  color: var(--accent); background: var(--accent-dim);
  border-left-color: var(--accent); text-decoration: none;
}
@media (max-width: 768px) {
  .vtk-sidebar {
    position: fixed; z-index: 1040; top: 58px;
    height: calc(100vh - 58px); transform: translateX(-100%);
  }
  .vtk-sidebar.open { transform: translateX(0); }
  .vtk-nav-center { display: none; }
  .vtk-nav-center.open { display: flex; flex-direction: column; position: absolute; top: 58px; left: 0; right: 0; background: var(--nav-bg); border-bottom: 1px solid var(--border); padding: .5rem 1rem; z-index: 1030; }
}

/* ── Main content ────────────────────────────────────── */
.vtk-main { flex: 1; padding: 1.75rem; overflow-x: hidden; min-width: 0; }
@media (max-width: 768px) { .vtk-main { padding: 1rem; } }

/* ── Page header ─────────────────────────────────────── */
.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  flex-wrap: wrap; gap: .75rem; margin-bottom: 1.75rem;
}
.page-header h1 { font-size: 1.35rem; font-weight: 700; color: var(--text); margin: 0; }
.breadcrumb {
  display: flex; align-items: center; gap: .35rem; flex-wrap: wrap;
  font-size: .78rem; color: var(--text-muted); margin-top: .2rem;
  list-style: none; padding: 0;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }
.breadcrumb-sep { color: var(--text-muted); }

/* ── Cards ───────────────────────────────────────────── */
.vtk-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow-sm);
  transition: border-color .2s, box-shadow .2s;
  overflow: hidden;
}
.vtk-card:hover { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent-glow), var(--shadow-sm); }
.vtk-card-header {
  padding: .9rem 1.2rem; border-bottom: 1px solid var(--border);
  font-weight: 600; font-size: .875rem;
  display: flex; align-items: center; gap: .5rem;
  color: var(--text);
}
.vtk-card-body { padding: 1.2rem; }
.vtk-card-footer {
  padding: .75rem 1.2rem; border-top: 1px solid var(--border);
  display: flex; align-items: center; justify-content: flex-end; gap: .5rem;
}

/* Stat cards */
.stat-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); padding: 1.1rem 1.25rem;
  position: relative; overflow: hidden; transition: all .2s;
}
.stat-card::before {
  content: ''; position: absolute; top: 0; left: 0; right: 0; height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.stat-card:hover { transform: translateY(-2px); border-color: var(--accent); }
.stat-icon {
  width: 38px; height: 38px; border-radius: 9px;
  background: var(--accent-dim); border: 1px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent); font-size: 1.05rem; margin-bottom: .6rem;
}
.stat-value { font-size: 1.75rem; font-weight: 700; color: var(--text); line-height: 1; }
.stat-label { font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; color: var(--text-muted); margin-top: .2rem; }
.stat-sub   { font-size: .75rem; color: var(--success); margin-top: .15rem; }

/* ── Tables ──────────────────────────────────────────── */
.vtk-table-wrap { overflow-x: auto; border-radius: var(--radius); border: 1px solid var(--border); }
.vtk-table { width: 100%; border-collapse: collapse; }
.vtk-table thead th {
  background: var(--bg2); color: var(--text-muted);
  font-size: .7rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: .07em; padding: .7rem 1rem;
  border-bottom: 1px solid var(--border); white-space: nowrap;
}
.vtk-table tbody tr { border-bottom: 1px solid var(--border-soft); transition: background .15s; }
.vtk-table tbody tr:last-child { border-bottom: none; }
.vtk-table tbody tr:hover { background: var(--accent-dim); }
.vtk-table td { padding: .7rem 1rem; font-size: .875rem; vertical-align: middle; color: var(--text); }

/* ── Forms ───────────────────────────────────────────── */
.form-group { margin-bottom: .9rem; }
.vtk-label {
  display: block; font-size: .72rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: .06em;
  color: var(--text-muted); margin-bottom: .3rem;
}
.vtk-input, .vtk-select, .vtk-textarea {
  width: 100%; background: var(--bg-input);
  border: 1px solid var(--border); border-radius: var(--radius-sm);
  color: var(--text); padding: .48rem .75rem; font-size: .875rem;
  font-family: inherit; transition: border-color .2s, box-shadow .2s; outline: none;
}
.vtk-input::placeholder { color: var(--text-muted); }
.vtk-input:focus, .vtk-select:focus, .vtk-textarea:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-glow);
}
.vtk-textarea { resize: vertical; min-height: 80px; }
.vtk-select option { background: var(--bg-card); color: var(--text); }
.form-hint { font-size: .75rem; color: var(--text-muted); margin-top: .25rem; }

/* ── Buttons ─────────────────────────────────────────── */
.vtk-btn {
  display: inline-flex; align-items: center; gap: .4rem;
  padding: .48rem 1rem; border-radius: var(--radius-sm);
  font-size: .875rem; font-weight: 500; cursor: pointer;
  border: 1px solid transparent; text-decoration: none;
  transition: all .2s; white-space: nowrap; font-family: inherit;
  line-height: 1.4;
}
.vtk-btn:hover { text-decoration: none; }
.vtk-btn:disabled { opacity: .5; cursor: not-allowed; pointer-events: none; }
.vtk-btn-primary { background: var(--accent); color: #000; border-color: var(--accent); }
.vtk-btn-primary:hover { background: var(--accent2); border-color: var(--accent2); color: #000; }
.vtk-btn-outline { background: transparent; color: var(--accent); border-color: var(--accent); }
.vtk-btn-outline:hover { background: var(--accent-dim); color: var(--accent); }
.vtk-btn-ghost { background: transparent; color: var(--text2); border-color: var(--border); }
.vtk-btn-ghost:hover { color: var(--text); border-color: var(--text2); }
.vtk-btn-danger { background: transparent; color: var(--danger); border-color: var(--danger); }
.vtk-btn-danger:hover { background: rgba(255,82,82,.1); }
.vtk-btn-sm { padding: .3rem .65rem; font-size: .8rem; }
.vtk-btn-lg { padding: .7rem 1.5rem; font-size: 1rem; }
.vtk-btn-block { width: 100%; justify-content: center; }

/* ── Badges ──────────────────────────────────────────── */
.vtk-badge {
  display: inline-flex; align-items: center;
  padding: .18rem .55rem; border-radius: 100px;
  font-size: .68rem; font-weight: 600; text-transform: uppercase; letter-spacing: .04em;
}
.badge-success { background: rgba(0,200,83,.15);  color: var(--success); }
.badge-danger  { background: rgba(255,82,82,.15);  color: var(--danger); }
.badge-warning { background: rgba(255,171,64,.15); color: var(--warning); }
.badge-info    { background: rgba(64,196,255,.15); color: var(--info); }
.badge-muted   { background: var(--border);        color: var(--text-muted); }
.badge-accent  { background: var(--accent-dim);    color: var(--accent); }

/* ── Alerts ──────────────────────────────────────────── */
.vtk-alert {
  padding: .65rem 1rem; border-radius: var(--radius);
  font-size: .875rem; display: flex; align-items: flex-start; gap: .6rem;
  margin-bottom: .6rem; animation: slideDown .25s ease;
}
@keyframes slideDown { from { opacity:0; transform:translateY(-8px); } to { opacity:1; transform:none; } }
.vtk-alert-success { background: rgba(0,200,83,.1);   border: 1px solid rgba(0,200,83,.3);  color: var(--success); }
.vtk-alert-danger  { background: rgba(255,82,82,.1);   border: 1px solid rgba(255,82,82,.3);  color: var(--danger); }
.vtk-alert-warning { background: rgba(255,171,64,.1);  border: 1px solid rgba(255,171,64,.3); color: var(--warning); }
.vtk-alert-info    { background: rgba(64,196,255,.1);  border: 1px solid rgba(64,196,255,.3); color: var(--info); }
.vtk-alert-close   { margin-left: auto; background: none; border: none; color: inherit; cursor: pointer; font-size: 1.1rem; padding: 0 .2rem; }

/* ── Pagination ──────────────────────────────────────── */
.vtk-pagination { display: flex; gap: .25rem; align-items: center; justify-content: center; margin-top: 1.25rem; flex-wrap: wrap; }
.vtk-pagination a, .vtk-pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 34px; height: 34px; padding: 0 .5rem;
  border-radius: var(--radius-sm); font-size: .85rem; text-decoration: none;
  border: 1px solid var(--border); color: var(--text2); transition: all .2s;
}
.vtk-pagination a:hover { border-color: var(--accent); color: var(--accent); text-decoration: none; }
.vtk-pagination .active  { background: var(--accent); border-color: var(--accent); color: #000; font-weight: 600; }
.vtk-pagination .disabled { opacity: .4; pointer-events: none; }

/* ── Modal ───────────────────────────────────────────── */
.vtk-modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.72);
  backdrop-filter: blur(4px); z-index: 1060;
  display: flex; align-items: center; justify-content: center; padding: 1rem;
  animation: fadeIn .2s;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }
.vtk-modal {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: 0 24px 64px rgba(0,0,0,.55);
  width: 100%; max-width: 560px; max-height: 92vh; overflow-y: auto;
  animation: scaleIn .2s;
}
@keyframes scaleIn { from { opacity:0; transform:scale(.96); } to { opacity:1; transform:none; } }
.vtk-modal .modal-header {
  padding: .9rem 1.25rem; border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.vtk-modal .modal-header h3 { font-size: 1rem; font-weight: 600; margin: 0; color: var(--text); }
.vtk-modal .modal-close { background: none; border: none; color: var(--text-muted); font-size: 1.3rem; cursor: pointer; padding: 0 .25rem; }
.vtk-modal .modal-body   { padding: 1.25rem; }
.vtk-modal .modal-footer { padding: .9rem 1.25rem; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: .5rem; }

/* ── Charts ──────────────────────────────────────────── */
.chart-wrap { position: relative; }

/* ── Footer ──────────────────────────────────────────── */
.vtk-footer {
  background: var(--bg-sidebar); border-top: 1px solid var(--border);
  padding: 1.1rem 1.5rem;
  display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap;
  gap: .6rem; font-size: .78rem; color: var(--text-muted); margin-top: auto;
}
.vtk-footer-links { display: flex; gap: .9rem; flex-wrap: wrap; }
.vtk-footer-links a { color: var(--text-muted); }
.vtk-footer-links a:hover { color: var(--accent); text-decoration: none; }

/* ── Utilities ───────────────────────────────────────── */
.text-accent   { color: var(--accent) !important; }
.text-muted-v  { color: var(--text-muted) !important; }
.text-success  { color: var(--success) !important; }
.text-danger   { color: var(--danger) !important; }
.text-mono     { font-family: 'JetBrains Mono', monospace; }
.grid-2  { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px,1fr)); gap: 1rem; }
.grid-3  { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px,1fr)); gap: 1rem; }
.grid-4  { display: grid; grid-template-columns: repeat(auto-fill, minmax(175px,1fr)); gap: 1rem; }
.gap-1   { gap: .25rem; } .gap-2 { gap: .5rem; } .gap-3 { gap: .75rem; }
.flex    { display: flex; } .flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.w-full  { width: 100%; } .mt-4 { margin-top: 1rem; } .mb-4 { margin-bottom: 1rem; }
.two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.three-col { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) {
  .two-col, .three-col { grid-template-columns: 1fr; }
}
.vtk-spinner {
  display: inline-block; width: 20px; height: 20px;
  border: 2px solid var(--border); border-top-color: var(--accent);
  border-radius: 50%; animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ── Auth pages ──────────────────────────────────────── */
.auth-wrap {
  min-height: 80vh; display: flex; align-items: center;
  justify-content: center; padding: 2rem 1rem;
}
.auth-card {
  width: 100%; max-width: 440px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius); box-shadow: var(--shadow);
  overflow: hidden;
}
.auth-card-top {
  text-align: center; padding: 2rem 1.5rem 1rem;
}
.auth-icon {
  width: 58px; height: 58px; border-radius: 15px;
  background: var(--accent-dim); border: 1px solid var(--accent);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.6rem; margin: 0 auto .9rem;
}
.auth-card-body { padding: 1.25rem 1.5rem 1.5rem; }
.pw-strength { height: 4px; border-radius: 2px; background: var(--border); transition: all .3s; margin-top: 4px; }

/* ── Policy pages ────────────────────────────────────── */
.policy-body { line-height: 1.8; color: var(--text2); }
.policy-body h2 { color: var(--text); font-size: 1.05rem; margin: 1.25rem 0 .5rem; }
.policy-body p, .policy-body ul, .policy-body li { font-size: .9rem; }
.policy-body ul { margin: .5rem 0 .5rem 1.5rem; }
.policy-nav { display: flex; gap: .5rem; flex-wrap: wrap; margin-top: 1rem; }