/* ============================================================
   assets/css/style.css - Engineering Portal Styles
   Design: Industrial Precision - Dark sidebar, clean data UI
   ============================================================ */

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

:root {
  --clr-primary:   #1a6bff;
  --clr-primary-d: #1255cc;
  --clr-accent:    #ff6b1a;
  --clr-success:   #16a34a;
  --clr-warning:   #d97706;
  --clr-danger:    #dc2626;
  --clr-info:      #0891b2;

  --sidebar-w:     260px;
  --sidebar-bg:    #0f172a;
  --sidebar-hover: #1e293b;
  --sidebar-text:  #94a3b8;
  --sidebar-active:#1a6bff;

  --bg-body:       #f1f5f9;
  --bg-card:       #ffffff;
  --bg-input:      #f8fafc;

  --text-primary:  #0f172a;
  --text-secondary:#64748b;
  --text-muted:    #94a3b8;

  --border:        #e2e8f0;
  --border-dark:   #cbd5e1;

  --radius:        10px;
  --radius-sm:     6px;
  --shadow:        0 1px 3px rgba(0,0,0,.08), 0 4px 16px rgba(0,0,0,.05);
  --shadow-md:     0 4px 12px rgba(0,0,0,.12);
  --transition:    all .18s ease;

  --font-body:     'DM Sans', sans-serif;
  --font-mono:     'Space Mono', monospace;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 15px; scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg-body);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

/* ---- LAYOUT ---- */
.layout { display: flex; min-height: 100vh; }

/* ---- SIDEBAR ---- */
.sidebar {
  width: var(--sidebar-w);
  background: var(--sidebar-bg);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 100;
  transition: var(--transition);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: #334155 transparent;
}

.sidebar-logo {
  padding: 22px 20px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center; gap: 10px;
}
.sidebar-logo .logo-icon {
  width: 36px; height: 36px;
  background: var(--clr-primary);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 18px; color: #fff; font-weight: 700;
  font-family: var(--font-mono);
}
.sidebar-logo .logo-text { color: #fff; font-size: 14px; font-weight: 600; line-height: 1.3; }
.sidebar-logo .logo-sub  { color: var(--sidebar-text); font-size: 11px; }

.sidebar-user {
  padding: 14px 20px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  display: flex; align-items: center; gap: 10px;
}
.user-avatar {
  width: 34px; height: 34px; border-radius: 50%;
  background: linear-gradient(135deg, var(--clr-primary), var(--clr-accent));
  display: flex; align-items: center; justify-content: center;
  color: #fff; font-size: 13px; font-weight: 700; flex-shrink: 0;
}
.user-info .user-name  { color: #e2e8f0; font-size: 13px; font-weight: 600; }
.user-info .user-role  { color: var(--sidebar-text); font-size: 11px; text-transform: capitalize; }

.sidebar-nav { flex: 1; padding: 12px 10px; }

.nav-section { margin-bottom: 6px; }
.nav-section-label {
  color: #475569; font-size: 10px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .08em;
  padding: 8px 10px 4px;
}

.nav-item {
  display: flex; align-items: center; gap: 10px;
  padding: 9px 10px;
  color: var(--sidebar-text);
  text-decoration: none;
  border-radius: 7px;
  font-size: 13.5px; font-weight: 500;
  transition: var(--transition);
  margin-bottom: 2px;
  cursor: pointer;
}
.nav-item:hover { background: var(--sidebar-hover); color: #e2e8f0; }
.nav-item.active { background: rgba(26,107,255,.15); color: var(--clr-primary); }
.nav-item .icon { font-size: 15px; width: 20px; text-align: center; flex-shrink: 0; }
.nav-item .badge {
  margin-left: auto;
  background: var(--clr-accent);
  color: #fff; font-size: 10px;
  padding: 1px 6px; border-radius: 10px;
}

.sidebar-footer {
  padding: 14px 10px;
  border-top: 1px solid rgba(255,255,255,.06);
}

/* ---- MAIN CONTENT ---- */
.main-content {
  margin-left: var(--sidebar-w);
  flex: 1;
  display: flex; flex-direction: column;
  min-height: 100vh;
}

/* ---- TOP BAR ---- */
.topbar {
  background: var(--bg-card);
  border-bottom: 1px solid var(--border);
  padding: 0 28px;
  height: 58px;
  display: flex; align-items: center; justify-content: space-between;
  position: sticky; top: 0; z-index: 50;
  box-shadow: 0 1px 0 var(--border);
}

.topbar-title { font-size: 16px; font-weight: 700; color: var(--text-primary); }
.topbar-right { display: flex; align-items: center; gap: 14px; }
.topbar-time {
  font-family: var(--font-mono);
  font-size: 12px; color: var(--text-secondary);
  background: var(--bg-body); padding: 4px 10px; border-radius: 5px;
}

/* ---- PAGE CONTENT ---- */
.page-content { padding: 26px 28px; flex: 1; }

/* ---- CARDS ---- */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
  gap: 10px;
}
.card-title { font-size: 14px; font-weight: 700; color: var(--text-primary); }
.card-body { padding: 20px; }

/* ---- STAT CARDS ---- */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 16px; margin-bottom: 24px; }

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  display: flex; flex-direction: column; gap: 6px;
  position: relative; overflow: hidden;
  transition: var(--transition);
}
.stat-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }
.stat-card::before {
  content: '';
  position: absolute; top: 0; left: 0; right: 0;
  height: 3px;
}
.stat-card.blue::before   { background: var(--clr-primary); }
.stat-card.green::before  { background: var(--clr-success); }
.stat-card.orange::before { background: var(--clr-accent); }
.stat-card.red::before    { background: var(--clr-danger); }
.stat-card.teal::before   { background: var(--clr-info); }

.stat-label { font-size: 12px; color: var(--text-secondary); font-weight: 500; }
.stat-value { font-size: 22px; font-weight: 700; color: var(--text-primary); font-family: var(--font-mono); }
.stat-sub   { font-size: 11px; color: var(--text-muted); }
.stat-icon  {
  position: absolute; right: 14px; top: 14px;
  font-size: 26px; opacity: .12;
}

/* ---- TABLES ---- */
.table-responsive { overflow-x: auto; }

table.data-table {
  width: 100%; border-collapse: collapse;
  font-size: 13.5px;
}
.data-table thead th {
  background: var(--bg-body);
  color: var(--text-secondary);
  font-size: 11px; font-weight: 700;
  text-transform: uppercase; letter-spacing: .06em;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}
.data-table tbody tr { transition: background .1s; }
.data-table tbody tr:hover { background: #f8fafc; }
.data-table tbody td {
  padding: 11px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
  vertical-align: middle;
}
.data-table tbody tr:last-child td { border-bottom: none; }

/* ---- BADGES ---- */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 20px;
  font-size: 11px; font-weight: 600;
  text-transform: uppercase; letter-spacing: .04em;
}
.badge-blue    { background: #dbeafe; color: #1d4ed8; }
.badge-green   { background: #dcfce7; color: #15803d; }
.badge-orange  { background: #ffedd5; color: #c2410c; }
.badge-red     { background: #fee2e2; color: #b91c1c; }
.badge-gray    { background: #f1f5f9; color: #475569; }
.badge-teal    { background: #cffafe; color: #0e7490; }
.badge-yellow  { background: #fef9c3; color: #a16207; }

/* ---- FORMS ---- */
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-grid-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-full { grid-column: 1 / -1; }

.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-label { font-size: 12px; font-weight: 600; color: var(--text-secondary); }
.form-label .req { color: var(--clr-danger); }

.form-control {
  padding: 9px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-input);
  font-size: 13.5px; color: var(--text-primary);
  font-family: var(--font-body);
  transition: var(--transition);
  width: 100%;
}
.form-control:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(26,107,255,.1);
  background: #fff;
}
.form-control.is-invalid { border-color: var(--clr-danger); }
.form-error { font-size: 11px; color: var(--clr-danger); }

select.form-control { cursor: pointer; }
textarea.form-control { min-height: 80px; resize: vertical; }

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 600;
  cursor: pointer; transition: var(--transition);
  border: 1.5px solid transparent;
  font-family: var(--font-body);
  white-space: nowrap;
  text-decoration: none;
}
.btn:disabled { opacity: .55; cursor: not-allowed; }

.btn-primary   { background: var(--clr-primary); color: #fff; border-color: var(--clr-primary); }
.btn-primary:hover { background: var(--clr-primary-d); }
.btn-success   { background: var(--clr-success); color: #fff; }
.btn-danger    { background: var(--clr-danger); color: #fff; }
.btn-warning   { background: var(--clr-warning); color: #fff; }
.btn-secondary { background: #e2e8f0; color: var(--text-primary); border-color: var(--border); }
.btn-secondary:hover { background: #cbd5e1; }
.btn-outline   { background: transparent; color: var(--clr-primary); border-color: var(--clr-primary); }
.btn-outline:hover { background: var(--clr-primary); color: #fff; }
.btn-sm { padding: 5px 10px; font-size: 12px; }
.btn-icon { padding: 7px; border-radius: 6px; background: var(--bg-body); border: 1px solid var(--border); color: var(--text-secondary); }
.btn-icon:hover { background: var(--border); }

/* ---- MODALS ---- */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.45);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
  opacity: 0; pointer-events: none;
  transition: opacity .2s;
}
.modal-overlay.open { opacity: 1; pointer-events: all; }

.modal {
  background: var(--bg-card);
  border-radius: var(--radius);
  width: 100%; max-width: 620px;
  max-height: 90vh; overflow-y: auto;
  box-shadow: 0 20px 60px rgba(0,0,0,.25);
  transform: translateY(16px);
  transition: transform .2s;
}
.modal-overlay.open .modal { transform: translateY(0); }
.modal-lg { max-width: 820px; }

.modal-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--border);
  display: flex; align-items: center; justify-content: space-between;
}
.modal-title { font-size: 15px; font-weight: 700; }
.modal-close { background: none; border: none; cursor: pointer; font-size: 18px; color: var(--text-muted); padding: 2px; }
.modal-body  { padding: 22px; }
.modal-footer {
  padding: 14px 22px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: flex-end; gap: 10px;
}

/* ---- ALERTS ---- */
.alert {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  font-size: 13px; font-weight: 500;
  display: flex; align-items: flex-start; gap: 8px;
  margin-bottom: 16px;
}
.alert-success { background: #dcfce7; color: #15803d; border: 1px solid #bbf7d0; }
.alert-error   { background: #fee2e2; color: #b91c1c; border: 1px solid #fecaca; }
.alert-warning { background: #fef9c3; color: #a16207; border: 1px solid #fde68a; }
.alert-info    { background: #dbeafe; color: #1d4ed8; border: 1px solid #bfdbfe; }

/* ---- TOAST ---- */
#toast-container {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 9999; display: flex; flex-direction: column; gap: 10px;
}
.toast {
  background: var(--sidebar-bg); color: #e2e8f0;
  padding: 12px 18px; border-radius: 8px;
  font-size: 13px; font-weight: 500;
  box-shadow: 0 8px 24px rgba(0,0,0,.3);
  display: flex; align-items: center; gap: 10px;
  min-width: 280px; max-width: 380px;
  animation: toastIn .25s ease;
  border-left: 4px solid var(--clr-primary);
}
.toast.success { border-color: var(--clr-success); }
.toast.error   { border-color: var(--clr-danger); }
.toast.warning { border-color: var(--clr-warning); }
@keyframes toastIn { from { transform: translateX(20px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* ---- MISC ---- */
.text-muted    { color: var(--text-muted); }
.text-success  { color: var(--clr-success); }
.text-danger   { color: var(--clr-danger); }
.text-mono     { font-family: var(--font-mono); }
.fw-600        { font-weight: 600; }
.d-flex        { display: flex; }
.align-center  { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2         { gap: 8px; }
.gap-3         { gap: 14px; }
.mb-4          { margin-bottom: 20px; }
.mt-4          { margin-top: 20px; }
.spinner { width: 18px; height: 18px; border: 2.5px solid rgba(255,255,255,.3); border-top-color: #fff; border-radius: 50%; animation: spin .6s linear infinite; display: inline-block; }
@keyframes spin { to { transform: rotate(360deg); } }

/* ---- SEARCH & FILTER BAR ---- */
.filter-bar {
  display: flex; align-items: center; gap: 10px;
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  flex-wrap: wrap;
}
.search-input {
  padding: 7px 12px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 13px; background: var(--bg-input);
  min-width: 220px;
}
.search-input:focus { outline: none; border-color: var(--clr-primary); }

/* ---- PAGINATION ---- */
.pagination { display: flex; align-items: center; gap: 4px; justify-content: flex-end; padding: 14px 20px; }
.pg-btn {
  padding: 5px 11px; border-radius: 5px;
  border: 1px solid var(--border);
  background: var(--bg-card); color: var(--text-secondary);
  font-size: 12px; cursor: pointer; transition: var(--transition);
}
.pg-btn:hover   { background: var(--bg-body); }
.pg-btn.active  { background: var(--clr-primary); color: #fff; border-color: var(--clr-primary); }

/* ---- CHART CONTAINERS ---- */
.chart-wrap { position: relative; height: 240px; }

/* ---- LOGIN PAGE ---- */
.login-page {
  min-height: 100vh;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 50%, #0f172a 100%);
  display: flex; align-items: center; justify-content: center;
  padding: 20px;
}
.login-card {
  background: #fff; border-radius: 14px;
  padding: 42px 40px; width: 100%; max-width: 400px;
  box-shadow: 0 24px 80px rgba(0,0,0,.4);
}
.login-logo { text-align: center; margin-bottom: 28px; }
.login-logo .logo-big {
  width: 56px; height: 56px; border-radius: 14px;
  background: var(--clr-primary);
  display: flex; align-items: center; justify-content: center;
  font-size: 26px; font-weight: 700; color: #fff;
  font-family: var(--font-mono);
  margin: 0 auto 12px;
}
.login-logo h1 { font-size: 20px; font-weight: 800; color: var(--text-primary); }
.login-logo p  { font-size: 12.5px; color: var(--text-muted); margin-top: 4px; }

/* ---- RESPONSIVE ---- */
.sidebar-toggle { display: none; }

@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .sidebar-toggle { display: flex; }
  .form-grid, .form-grid-3 { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 500px) {
  .stats-grid { grid-template-columns: 1fr; }
  .page-content { padding: 16px; }
}