/* =======================================================================
   kJ ENGINEERING ERP — CORE STYLESHEET
   Design language: Modern industrial SaaS. Dark blue + dark orange.
   High contrast, sharp borders, disciplined type scale.
   ======================================================================= */

:root {
  /* ---- Brand palette ---- */
  --kj-navy-950:   #0f1f33;
  --kj-navy-900:   #1a365d;   /* primary */
  --kj-navy-800:   #234876;
  --kj-navy-700:   #2c5c94;
  --kj-navy-100:   #e7edf5;

  --kj-orange-700: #b4530f;
  --kj-orange-600: #dd6b20;   /* accent */
  --kj-orange-500: #f0812e;
  --kj-orange-100: #fdece0;

  --kj-ink:        #16212e;
  --kj-slate-600:  #4a5a6b;
  --kj-slate-400:  #7f909f;
  --kj-slate-200:  #dbe2e8;
  --kj-slate-100:  #eef1f4;
  --kj-white:      #ffffff;
  --kj-bg:         #f4f6f8;

  --kj-success:    #1e8a5f;
  --kj-danger:     #c0392b;
  --kj-warning:    #d99a1b;

  /* ---- Type ---- */
  --font-display: 'Rajdhani', 'Segoe UI', sans-serif;
  --font-body:    'Inter', 'Segoe UI', Arial, sans-serif;
  --font-mono:    'JetBrains Mono', 'Consolas', monospace;

  /* ---- Structure ---- */
  --radius-sm: 3px;
  --radius-md: 4px;
  --sidebar-w: 264px;
  --sidebar-w-collapsed: 76px;
  --header-h: 68px;

  --shadow-sm: 0 1px 2px rgba(15, 31, 51, 0.08);
  --shadow-md: 0 4px 14px rgba(15, 31, 51, 0.10);
  --shadow-lg: 0 10px 30px rgba(15, 31, 51, 0.16);

  --transition-fast: 150ms ease;
  --transition-med: 250ms cubic-bezier(.4,0,.2,1);
}

/* ---- Reset ---- */
*, *::before, *::after { box-sizing: border-box; }
html, body {
  margin: 0; padding: 0;
  font-family: var(--font-body);
  color: var(--kj-ink);
  background: var(--kj-bg);
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3, h4 { font-family: var(--font-display); margin: 0; letter-spacing: 0.01em; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
:focus-visible {
  outline: 2px solid var(--kj-orange-600);
  outline-offset: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}

/* =======================================================================
   LOGIN PAGE
   ======================================================================= */
.login-body {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  background-color: var(--kj-navy-950);
}

.login-bg-image {
  position: absolute;
  inset: 0;
  background-image: var(--login-bg-url);
  background-size: cover;
  background-position: center;
  opacity: 0.3;
  filter: saturate(1.05);
  z-index: 0;
}

.login-bg-overlay {
  position: absolute;
  inset: 0;
  background: rgba(26, 54, 93, 0.75);
  z-index: 1;
}

.login-card-wrap {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: 400px;
  padding: 0 20px;
}

.login-card {
  background: var(--kj-white);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: 40px;
}

.login-heading {
  font-size: 2.1rem;
  font-weight: 700;
  color: var(--kj-navy-900);
  text-align: center;
  margin-bottom: 6px;
  letter-spacing: 0.02em;
}

.login-subheading {
  text-align: center;
  font-size: 0.88rem;
  color: var(--kj-slate-600);
  margin-bottom: 28px;
}

.login-error {
  background: #fbeae8;
  border: 1px solid #f0c4bd;
  color: var(--kj-danger);
  font-size: 0.82rem;
  padding: 10px 14px;
  border-radius: var(--radius-sm);
  margin-bottom: 18px;
}

.kj-field {
  position: relative;
  margin-bottom: 18px;
}

.kj-field .field-icon {
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--kj-navy-900);
  border-radius: 5px 0 0 5px;
  color: var(--kj-white);
  pointer-events: none;
}
.kj-field .field-icon svg { width: 18px; height: 18px; }

.kj-field input {
  width: 100%;
  padding: 13px 14px 13px 56px;
  border: 1.5px solid var(--kj-navy-900);
  border-radius: 5px;
  font-size: 0.95rem;
  color: var(--kj-ink);
  background: var(--kj-white);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}
.kj-field input::placeholder { color: var(--kj-slate-400); }
.kj-field input:focus {
  border-color: var(--kj-orange-600);
  box-shadow: 0 0 0 3px rgba(221,107,32,0.15);
  outline: none;
}

.login-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin: 22px 0 26px;
}

.kj-checkbox {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  color: var(--kj-slate-600);
}
.kj-checkbox input { accent-color: var(--kj-orange-600); width: 15px; height: 15px; }

.btn-login {
  background: var(--kj-orange-600);
  color: var(--kj-white);
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 12px 28px;
  border-radius: 5px;
  letter-spacing: 0.02em;
  transition: background var(--transition-fast), transform var(--transition-fast);
}
.btn-login:hover { background: var(--kj-orange-700); }
.btn-login:active { transform: translateY(1px); }

.login-forgot {
  text-align: center;
  font-size: 0.83rem;
  color: var(--kj-slate-600);
}
.login-forgot a {
  color: var(--kj-orange-600);
  font-weight: 600;
}
.login-forgot a:hover { text-decoration: underline; }

/* =======================================================================
   APP SHELL — HEADER + SIDEBAR + CONTENT
   ======================================================================= */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ---- Sidebar ---- */
.sidebar {
  width: var(--sidebar-w);
  flex-shrink: 0;
  background: var(--kj-navy-900);
  background-image: linear-gradient(180deg, var(--kj-navy-900) 0%, var(--kj-navy-950) 100%);
  color: var(--kj-white);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0; bottom: 0;
  z-index: 40;
  transition: width var(--transition-med);
  border-right: 1px solid rgba(255,255,255,0.06);
}
.sidebar.collapsed { width: var(--sidebar-w-collapsed); }

.sidebar-brand {
  height: var(--header-h);
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
  flex-shrink: 0;
  overflow: hidden;
}
.sidebar-brand img {
  height: 32px;
  width: 32px;
  object-fit: contain;
  flex-shrink: 0;
  border-radius: var(--radius-sm);
  background: var(--kj-white);
  padding: 3px;
}
.sidebar-brand .brand-text {
  font-family: var(--font-display);
  font-size: 1.02rem;
  font-weight: 700;
  white-space: nowrap;
  color: var(--kj-white);
}
.sidebar-brand .brand-text small {
  display: block;
  font-family: var(--font-body);
  font-size: 0.62rem;
  font-weight: 500;
  color: var(--kj-orange-500);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.sidebar.collapsed .brand-text { display: none; }

.sidebar-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 10px;
}
.sidebar-nav::-webkit-scrollbar { width: 5px; }
.sidebar-nav::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.15); border-radius: 3px; }

.nav-item {
  display: flex;
  align-items: center;
  gap: 13px;
  padding: 11px 14px;
  margin-bottom: 3px;
  border-radius: var(--radius-sm);
  color: rgba(255,255,255,0.78);
  font-size: 0.87rem;
  font-weight: 500;
  border-left: 3px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}
.nav-item svg { width: 19px; height: 19px; flex-shrink: 0; }
.nav-item:hover {
  background: rgba(221,107,32,0.14);
  color: var(--kj-white);
  border-left-color: var(--kj-orange-600);
}
.nav-item.active {
  background: rgba(221,107,32,0.22);
  color: var(--kj-white);
  border-left-color: var(--kj-orange-600);
  font-weight: 600;
}
.sidebar.collapsed .nav-item span.label { display: none; }
.sidebar.collapsed .nav-item { justify-content: center; }

.sidebar-footer {
  padding: 14px 20px;
  border-top: 1px solid rgba(255,255,255,0.08);
  font-size: 0.7rem;
  color: rgba(255,255,255,0.4);
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
}
.sidebar.collapsed .sidebar-footer { text-align: center; }
.sidebar.collapsed .sidebar-footer .full-text { display: none; }

/* ---- Main column ---- */
.main-col {
  flex: 1;
  margin-left: var(--sidebar-w);
  display: flex;
  flex-direction: column;
  min-width: 0;
  transition: margin-left var(--transition-med);
}
.main-col.expanded { margin-left: var(--sidebar-w-collapsed); }

/* ---- Header ---- */
.app-header {
  height: var(--header-h);
  background: var(--kj-white);
  border-bottom: 1px solid var(--kj-slate-200);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 26px;
  position: sticky;
  top: 0;
  z-index: 30;
  gap: 20px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
  min-width: 0;
}

.sidebar-toggle {
  background: var(--kj-slate-100);
  border: 1px solid var(--kj-slate-200);
  border-radius: var(--radius-sm);
  width: 36px; height: 36px;
  display: flex; align-items: center; justify-content: center;
  color: var(--kj-navy-900);
  flex-shrink: 0;
  transition: background var(--transition-fast);
}
.sidebar-toggle:hover { background: var(--kj-orange-100); color: var(--kj-orange-600); }
.sidebar-toggle svg { width: 18px; height: 18px; }

.header-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}
.header-logo img {
  height: 38px;
  width: auto;
  object-fit: contain;
}
.header-logo .company-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1rem;
  color: var(--kj-navy-900);
  white-space: nowrap;
}

.header-center {
  flex: 1;
  display: flex;
  justify-content: center;
  max-width: 460px;
}

.search-bar {
  position: relative;
  width: 100%;
}
.search-bar input {
  width: 100%;
  padding: 9px 14px 9px 38px;
  border: 1px solid var(--kj-slate-200);
  background: var(--kj-slate-100);
  border-radius: var(--radius-sm);
  font-size: 0.86rem;
  transition: border-color var(--transition-fast), background var(--transition-fast);
}
.search-bar input:focus {
  background: var(--kj-white);
  border-color: var(--kj-navy-700);
  outline: none;
}
.search-bar svg {
  position: absolute;
  left: 12px; top: 50%;
  transform: translateY(-50%);
  width: 16px; height: 16px;
  color: var(--kj-slate-400);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 22px;
  flex-shrink: 0;
}

.digital-clock {
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--kj-navy-900);
  background: var(--kj-slate-100);
  border: 1px solid var(--kj-slate-200);
  border-radius: var(--radius-sm);
  padding: 7px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  line-height: 1.1;
  min-width: 108px;
}
.digital-clock .clock-date {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 0.62rem;
  color: var(--kj-slate-600);
  letter-spacing: 0.04em;
}

.user-badge {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 8px 6px 6px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--kj-slate-200);
  cursor: pointer;
  transition: background var(--transition-fast);
}
.user-badge:hover { background: var(--kj-slate-100); }
.user-avatar {
  width: 32px; height: 32px;
  border-radius: 50%;
  background: var(--kj-navy-900);
  color: var(--kj-white);
  display: flex; align-items: center; justify-content: center;
  font-weight: 700;
  font-size: 0.82rem;
  flex-shrink: 0;
}
.user-meta { line-height: 1.2; }
.user-meta .u-name { font-size: 0.82rem; font-weight: 600; color: var(--kj-ink); }
.user-meta .u-role { font-size: 0.68rem; color: var(--kj-slate-600); text-transform: uppercase; letter-spacing: 0.04em; }

/* ---- Content panel ---- */
.content-panel {
  flex: 1;
  padding: 28px 30px 50px;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
  flex-wrap: wrap;
  gap: 12px;
}

.breadcrumb {
  font-size: 0.78rem;
  color: var(--kj-slate-600);
  margin-bottom: 4px;
}
.breadcrumb span.current { color: var(--kj-orange-600); font-weight: 600; }

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--kj-navy-900);
}

.module-placeholder {
  background: var(--kj-white);
  border: 1px solid var(--kj-slate-200);
  border-top: 3px solid var(--kj-orange-600);
  border-radius: var(--radius-md);
  padding: 60px 40px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}
.module-placeholder .ph-icon {
  width: 56px; height: 56px;
  margin: 0 auto 20px;
  color: var(--kj-navy-700);
  opacity: 0.8;
}
.module-placeholder h2 {
  font-size: 1.3rem;
  color: var(--kj-navy-900);
  margin-bottom: 8px;
}
.module-placeholder p {
  color: var(--kj-slate-600);
  font-size: 0.9rem;
  max-width: 440px;
  margin: 0 auto;
}
.module-placeholder .ph-tag {
  display: inline-block;
  margin-top: 18px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--kj-orange-700);
  background: var(--kj-orange-100);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
}

/* Stat cards used on dashboard */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: 18px;
  margin-bottom: 26px;
}
.stat-card {
  background: var(--kj-white);
  border: 1px solid var(--kj-slate-200);
  border-radius: var(--radius-md);
  padding: 20px 22px;
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--kj-navy-900);
}
.stat-card.accent { border-left-color: var(--kj-orange-600); }
.stat-card .stat-label {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--kj-slate-600);
  font-weight: 600;
  margin-bottom: 8px;
}
.stat-card .stat-value {
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--kj-navy-900);
}

/* ---- Overlay for mobile sidebar ---- */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(15,31,51,0.5);
  z-index: 39;
}
.sidebar-overlay.show { display: block; }

/* =======================================================================
   RESPONSIVE
   ======================================================================= */
@media (max-width: 992px) {
  .header-center { display: none; }
  .sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-w);
  }
  .sidebar.mobile-open { transform: translateX(0); }
  .main-col, .main-col.expanded { margin-left: 0; }
}

@media (max-width: 600px) {
  .content-panel { padding: 18px 14px 40px; }
  .digital-clock { display: none; }
  .user-meta { display: none; }
  .app-header { padding: 0 14px; }
  .login-card { padding: 34px 24px 28px; }
}