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

/* ── Variables ─────────────────────────────────────── */
:root {
  --bg:          #0d0f1a;
  --bg2:         #13162a;
  --bg3:         #1a1e38;
  --card:        rgba(255,255,255,0.04);
  --border:      rgba(255,255,255,0.08);
  --border2:     rgba(255,255,255,0.14);
  --text:        #f1f5f9;
  --text2:       #94a3b8;
  --text3:       #64748b;
  --accent:      #f59e0b;
  --accent-dim:  rgba(245,158,11,0.15);
  --accent-h:    #fbbf24;
  --success:     #10b981;
  --success-dim: rgba(16,185,129,0.13);
  --danger:      #ef4444;
  --danger-dim:  rgba(239,68,68,0.13);
  --warning:     #f59e0b;
  --info:        #3b82f6;
  --info-dim:    rgba(59,130,246,0.13);
  --sidebar:     240px;
  --header:      60px;
  --r:           12px;
  --r-sm:        8px;
  --shadow:      0 8px 32px rgba(0,0,0,0.45);
  --t:           all .2s ease;
}

/* ── Reset ─────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 15px; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); min-height: 100vh; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }
input, select, textarea { font-family: inherit; }
img { max-width: 100%; }

/* ── Layout ─────────────────────────────────────────── */
.app-layout { display: flex; min-height: 100vh; }

/* Sidebar */
.sidebar {
  width: var(--sidebar);
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: transform .3s ease;
}
.sidebar-logo {
  padding: 1.2rem 1.4rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
}
.sidebar-logo-img {
  max-width: 140px;
  height: auto;
  filter: drop-shadow(0 0 8px rgba(245,158,11,.15));
}

.sidebar-nav { flex: 1; padding: 1rem .7rem; overflow-y: auto; }
.nav-section { margin-bottom: 1.5rem; }
.nav-label {
  font-size: .65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--text3);
  padding: 0 .6rem .5rem;
}
.nav-item {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: .65rem .8rem;
  border-radius: var(--r-sm);
  color: var(--text2);
  font-size: .88rem;
  font-weight: 500;
  transition: var(--t);
  margin-bottom: 2px;
}
.nav-item:hover { background: var(--card); color: var(--text); }
.nav-item.active { background: var(--accent-dim); color: var(--accent); }
.nav-item .nav-icon { font-size: 1.1rem; width: 20px; text-align: center; }

.sidebar-footer {
  padding: .9rem 1.2rem;
  border-top: 1px solid var(--border);
}
.user-info { display: flex; align-items: center; gap: .7rem; }
.user-avatar {
  width: 34px; height: 34px;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  font-weight: 700; font-size: .8rem; color: var(--accent);
}
.user-name { font-size: .82rem; font-weight: 600; line-height: 1.2; }
.user-role { font-size: .7rem; color: var(--text3); text-transform: capitalize; }
.btn-logout {
  margin-left: auto;
  background: none; border: none;
  color: var(--text3);
  font-size: 1.1rem;
  transition: var(--t);
}
.btn-logout:hover { color: var(--danger); }

/* Main content */
.main-content {
  margin-left: var(--sidebar);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}
.page-header {
  padding: 1.4rem 2rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg);
  position: sticky; top: 0; z-index: 10;
}
.page-title { font-size: 1.3rem; font-weight: 700; }
.page-subtitle { font-size: .8rem; color: var(--text2); margin-top: 2px; }
.page-body { padding: 1.8rem 2rem; flex: 1; }

/* ── Cards ──────────────────────────────────────────── */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.4rem;
  backdrop-filter: blur(10px);
}
.card-header {
  display: flex; align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}
.card-title { font-weight: 600; font-size: .95rem; }

/* ── Stats Grid ─────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(190px,1fr)); gap: 1rem; margin-bottom: 1.5rem; }
.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 1.3rem 1.4rem;
  display: flex; align-items: center; gap: 1rem;
  transition: var(--t);
  position: relative;
  overflow: hidden;
}
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0;
  width: 3px; height: 100%;
}
.stat-card.amber::before { background: var(--accent); }
.stat-card.green::before  { background: var(--success); }
.stat-card.red::before    { background: var(--danger); }
.stat-card.blue::before   { background: var(--info); }
.stat-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); border-color: var(--border2); }

.stat-icon {
  width: 44px; height: 44px;
  border-radius: var(--r-sm);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; flex-shrink: 0;
}
.stat-icon.amber { background: var(--accent-dim); }
.stat-icon.green { background: var(--success-dim); }
.stat-icon.red   { background: var(--danger-dim); }
.stat-icon.blue  { background: var(--info-dim); }
.stat-value { font-size: 1.6rem; font-weight: 700; line-height: 1; }
.stat-label { font-size: .75rem; color: var(--text2); margin-top: 3px; }

/* ── Buttons ─────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; gap: .45rem;
  padding: .55rem 1.1rem;
  border-radius: var(--r-sm);
  border: none;
  font-size: .85rem; font-weight: 500;
  transition: var(--t);
  line-height: 1;
}
.btn-primary { background: var(--accent); color: #000; }
.btn-primary:hover { background: var(--accent-h); transform: translateY(-1px); }
.btn-secondary { background: var(--card); border: 1px solid var(--border2); color: var(--text); }
.btn-secondary:hover { background: var(--bg3); }
.btn-danger  { background: var(--danger-dim); color: var(--danger); border: 1px solid rgba(239,68,68,.25); }
.btn-danger:hover  { background: var(--danger); color: #fff; }
.btn-success { background: var(--success-dim); color: var(--success); border: 1px solid rgba(16,185,129,.25); }
.btn-success:hover { background: var(--success); color: #fff; }
.btn-icon { padding: .5rem; border-radius: var(--r-sm); }
.btn-sm { padding: .38rem .75rem; font-size: .78rem; }
.btn-lg { padding: .75rem 1.6rem; font-size: .95rem; }

/* ── Table ──────────────────────────────────────────── */
.table-wrap { overflow-x: auto; border-radius: var(--r); }
table { width: 100%; border-collapse: collapse; font-size: .85rem; }
thead th {
  background: var(--bg3);
  padding: .75rem 1rem;
  text-align: left; font-weight: 600;
  font-size: .75rem; text-transform: uppercase; letter-spacing: .8px;
  color: var(--text2);
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: .8rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
tbody tr { transition: var(--t); }
tbody tr:hover { background: rgba(255,255,255,.03); }
tbody tr:last-child td { border-bottom: none; }

/* ── Badges ─────────────────────────────────────────── */
.badge {
  display: inline-flex; align-items: center;
  padding: .2rem .6rem;
  border-radius: 20px;
  font-size: .72rem; font-weight: 600;
}
.badge-success { background: var(--success-dim); color: var(--success); }
.badge-warning { background: var(--accent-dim);  color: var(--accent); }
.badge-danger  { background: var(--danger-dim);  color: var(--danger); }
.badge-info    { background: var(--info-dim);    color: var(--info); }
.badge-gray    { background: rgba(148,163,184,.13); color: var(--text2); }

/* ── Forms ──────────────────────────────────────────── */
.form-group { margin-bottom: 1rem; }
.form-label { display: block; font-size: .82rem; font-weight: 500; margin-bottom: .4rem; color: var(--text2); }
.form-control {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--r-sm);
  color: var(--text);
  padding: .6rem .85rem;
  font-size: .88rem;
  transition: var(--t);
  outline: none;
}
.form-control:focus { border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-dim); }
.form-control::placeholder { color: var(--text3); }
select.form-control option { background: var(--bg2); }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1rem; }
.col-span-2 { grid-column: span 2; }
.col-span-3 { grid-column: span 3; }

/* ── Modal ──────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.65);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center;
  padding: 1rem;
  opacity: 0; pointer-events: none;
  transition: opacity .25s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }
.modal {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--r);
  width: 100%; max-width: 580px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow);
  transform: translateY(20px);
  transition: transform .25s;
}
.modal-overlay.open .modal { transform: translateY(0); }
.modal-header {
  padding: 1.2rem 1.4rem;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-weight: 700; font-size: 1rem; }
.modal-close {
  background: none; border: none;
  color: var(--text2); font-size: 1.3rem;
  transition: var(--t);
}
.modal-close:hover { color: var(--danger); transform: rotate(90deg); }
.modal-body { padding: 1.4rem; }
.modal-footer {
  padding: 1rem 1.4rem;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: .6rem;
}

/* ── Search Bar ─────────────────────────────────────── */
.search-bar {
  display: flex; align-items: center; gap: .8rem;
  margin-bottom: 1.2rem;
  flex-wrap: wrap;
}
.search-input-wrap { position: relative; flex: 1; min-width: 200px; }
.search-input-wrap .search-icon {
  position: absolute; left: .8rem; top: 50%; transform: translateY(-50%);
  color: var(--text3); font-size: .9rem;
}
.search-input-wrap input { padding-left: 2.2rem; }

/* ── Toolbar ─────────────────────────────────────────── */
.toolbar { display: flex; align-items: center; justify-content: space-between; margin-bottom: 1.2rem; flex-wrap: wrap; gap: .7rem; }

/* ── Product Image ──────────────────────────────────── */
.prod-img { width: 42px; height: 42px; border-radius: var(--r-sm); object-fit: cover; background: var(--bg3); border: 1px solid var(--border); }
.prod-img-placeholder {
  width: 42px; height: 42px;
  border-radius: var(--r-sm);
  background: var(--bg3);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem; color: var(--text3);
}

/* ── Stock Indicator ─────────────────────────────────── */
.stock-bar-wrap { width: 80px; height: 6px; background: var(--bg3); border-radius: 3px; overflow: hidden; }
.stock-bar { height: 100%; border-radius: 3px; transition: width .4s; }
.stock-bar.ok    { background: var(--success); }
.stock-bar.low   { background: var(--warning); }
.stock-bar.empty { background: var(--danger); }

/* ── Toast ──────────────────────────────────────────── */
#toast-container { position: fixed; bottom: 1.5rem; right: 1.5rem; z-index: 9999; display: flex; flex-direction: column; gap: .5rem; }
.toast {
  display: flex; align-items: center; gap: .7rem;
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: var(--r-sm);
  padding: .75rem 1rem;
  font-size: .85rem;
  box-shadow: var(--shadow);
  animation: slideIn .3s ease;
  max-width: 340px;
}
.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger); }
.toast.warning { border-left: 3px solid var(--warning); }
@keyframes slideIn { from { opacity:0; transform:translateX(20px); } to { opacity:1; transform:translateX(0); } }
@keyframes slideOut { from { opacity:1; } to { opacity:0; transform:translateX(20px); } }

/* ── Loading ─────────────────────────────────────────── */
.spinner {
  width: 36px; height: 36px;
  border: 3px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-overlay {
  position: absolute; inset: 0;
  background: rgba(13,15,26,.7);
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--r);
  z-index: 5;
}

/* ── Empty State ─────────────────────────────────────── */
.empty-state {
  text-align: center; padding: 3.5rem 1rem; color: var(--text2);
}
.empty-state .empty-icon { font-size: 3rem; margin-bottom: .8rem; opacity: .5; }
.empty-state h3 { font-size: 1rem; font-weight: 600; margin-bottom: .4rem; }
.empty-state p  { font-size: .85rem; color: var(--text3); }

/* ── Login Page ─────────────────────────────────────── */
.login-page {
  min-height: 100vh;
  display: flex;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}
.login-bg {
  position: absolute; inset: 0;
  background: radial-gradient(ellipse 80% 80% at 50% -10%, rgba(245,158,11,.18) 0%, transparent 60%);
}
.login-particles { position: absolute; inset: 0; overflow: hidden; }
.login-particles span {
  position: absolute;
  width: 2px; height: 2px;
  background: var(--accent);
  border-radius: 50%;
  animation: float linear infinite;
  opacity: .4;
}
@keyframes float {
  from { transform: translateY(100vh); opacity: 0; }
  10%  { opacity: .5; }
  90%  { opacity: .4; }
  to   { transform: translateY(-10vh); opacity: 0; }
}
.login-panel {
  margin: auto;
  width: 100%; max-width: 400px;
  position: relative; z-index: 1;
  padding: 1rem;
}
.login-box {
  background: rgba(19,22,42,.9);
  border: 1px solid var(--border2);
  border-radius: 20px;
  padding: 2.5rem 2rem;
  box-shadow: 0 24px 80px rgba(0,0,0,.5);
  backdrop-filter: blur(20px);
}
.login-logo {
  text-align: center; margin-bottom: 2rem;
}
.login-logo-img {
  max-width: 220px;
  height: auto;
  margin: 0 auto 1.5rem;
  display: block;
  filter: drop-shadow(0 0 15px rgba(245,158,11,.3));
  animation: float-logo 3s ease-in-out infinite;
}
@keyframes float-logo {
  0%,100% { transform: translateY(0); filter: drop-shadow(0 0 15px rgba(245,158,11,.3)); }
  50%     { transform: translateY(-5px); filter: drop-shadow(0 0 25px rgba(245,158,11,.5)); }
}
.login-logo p { font-size: .82rem; color: var(--text2); margin-top: .3rem; }
.login-btn {
  width: 100%; padding: .85rem;
  background: var(--accent); color: #000;
  border: none; border-radius: var(--r-sm);
  font-size: .95rem; font-weight: 700;
  transition: var(--t); margin-top: .5rem;
}
.login-btn:hover { background: var(--accent-h); transform: translateY(-1px); box-shadow: 0 8px 20px rgba(245,158,11,.3); }
.login-error {
  background: var(--danger-dim); border: 1px solid rgba(239,68,68,.3);
  border-radius: var(--r-sm); padding: .6rem .9rem;
  font-size: .83rem; color: var(--danger);
  margin-top: .8rem; display: none;
}
.login-error.show { display: block; animation: shake .3s; }
@keyframes shake {
  0%,100% { transform:translateX(0); }
  25% { transform:translateX(-6px); }
  75% { transform:translateX(6px); }
}

/* ── Responsive ─────────────────────────────────────── */
@media (max-width: 768px) {
  :root { --sidebar: 0px; }
  .sidebar { transform: translateX(-240px); width: 240px; }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .page-body { padding: 1rem; }
  .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
  .col-span-2, .col-span-3 { grid-column: span 1; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr; }
}

/* ── Utilities ──────────────────────────────────────── */
.text-accent  { color: var(--accent); }
.text-success { color: var(--success); }
.text-danger  { color: var(--danger); }
.text-muted   { color: var(--text2); }
.text-sm      { font-size: .8rem; }
.fw-600       { font-weight: 600; }
.fw-700       { font-weight: 700; }
.gap-1 { gap: .5rem; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.flex-wrap { flex-wrap: wrap; }
.mt-1 { margin-top: .5rem; }
.mt-2 { margin-top: 1rem; }
.mb-1 { margin-bottom: .5rem; }
.mb-2 { margin-bottom: 1rem; }
.w-100 { width: 100%; }