/* ================================================================
   GOADMINUP — Design System
   Black & White / Modern / Clean
   ================================================================ */

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

/* ----------------------------------------------------------------
   CSS Custom Properties
   ---------------------------------------------------------------- */
:root {
  --color-black:      #000000;
  --color-white:      #ffffff;
  --color-gray-50:    #f9f9f9;
  --color-gray-100:   #f3f3f3;
  --color-gray-200:   #e8e8e8;
  --color-gray-300:   #d4d4d4;
  --color-gray-400:   #a3a3a3;
  --color-gray-500:   #737373;
  --color-gray-600:   #525252;
  --color-gray-700:   #404040;
  --color-gray-800:   #262626;
  --color-gray-900:   #171717;

  --sidebar-bg:       var(--color-black);
  --sidebar-text:     var(--color-white);
  --sidebar-hover:    #1a1a1a;
  --sidebar-active:   #2a2a2a;
  --sidebar-border:   #2e2e2e;
  --sidebar-width:    260px;

  --content-bg:       var(--color-white);
  --content-text:     var(--color-gray-900);
  --content-secondary: var(--color-gray-500);

  --header-bg:        var(--color-white);
  --header-border:    var(--color-gray-200);

  --card-bg:          var(--color-white);
  --card-border:      var(--color-gray-200);
  --card-shadow:      0 1px 3px rgba(0,0,0,0.07), 0 1px 2px rgba(0,0,0,0.04);
  --card-shadow-hover: 0 4px 14px rgba(0,0,0,0.10);
  --card-radius:      10px;

  --font-family:      'Inter', system-ui, -apple-system, sans-serif;
  --transition:       150ms ease;
  --transition-slow:  300ms ease;
}

/* ----------------------------------------------------------------
   Reset & Base
   ---------------------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  font-family: var(--font-family);
  color: var(--content-text);
  background: var(--color-gray-50);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }

/* ----------------------------------------------------------------
   App Shell
   ---------------------------------------------------------------- */
.app-shell {
  display: flex;
  min-height: 100vh;
}

/* ----------------------------------------------------------------
   Sidebar
   ---------------------------------------------------------------- */
.sidebar {
  width: var(--sidebar-width);
  background: var(--sidebar-bg);
  color: var(--sidebar-text);
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0; left: 0;
  height: 100vh;
  z-index: 100;
  overflow-y: auto;
  overflow-x: hidden;
  transition: transform var(--transition-slow);
}

.sidebar::-webkit-scrollbar { width: 4px; }
.sidebar::-webkit-scrollbar-track { background: transparent; }
.sidebar::-webkit-scrollbar-thumb { background: var(--sidebar-border); border-radius: 2px; }

.sidebar-logo {
  padding: 24px 20px 20px;
  border-bottom: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}

.sidebar-logo img {
  width: 180px;
  height: auto;
  object-fit: contain;
  display: block;
}

.sidebar-logo-text { display: none; }

.sidebar-nav { flex: 1; padding: 10px 0; }

.sidebar-nav-label {
  font-size: 0.6875rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-gray-600);
  padding: 14px 20px 5px;
  display: block;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 9px 20px;
  color: var(--color-gray-400);
  font-size: 0.875rem;
  font-weight: 500;
  position: relative;
  transition: background var(--transition), color var(--transition);
}
.sidebar-nav-item:hover {
  background: var(--sidebar-hover);
  color: var(--color-white);
}
.sidebar-nav-item.active {
  background: var(--sidebar-active);
  color: var(--color-white);
}
.sidebar-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0; top: 4px; bottom: 4px;
  width: 3px;
  background: var(--color-white);
  border-radius: 0 2px 2px 0;
}
.sidebar-nav-item svg {
  width: 17px;
  height: 17px;
  flex-shrink: 0;
  stroke-width: 1.75;
}

.sidebar-user {
  padding: 14px 18px;
  border-top: 1px solid var(--sidebar-border);
  display: flex;
  align-items: center;
  gap: 11px;
  flex-shrink: 0;
}
.sidebar-user-avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--sidebar-active);
  border: 1px solid var(--sidebar-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--color-white);
  flex-shrink: 0;
}
.sidebar-user-info { flex: 1; min-width: 0; }
.sidebar-user-name {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-white);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sidebar-user-role { font-size: 0.75rem; color: var(--color-gray-500); }
.sidebar-logout-btn {
  background: none;
  border: none;
  color: var(--color-gray-600);
  padding: 4px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  transition: color var(--transition);
}
.sidebar-logout-btn:hover { color: var(--color-white); }
.sidebar-logout-btn svg { width: 16px; height: 16px; }

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

.page-header {
  background: var(--header-bg);
  border-bottom: 1px solid var(--header-border);
  padding: 0 32px;
  height: 60px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 50;
}
.page-header-title {
  font-size: 1.0625rem;
  font-weight: 700;
  color: var(--content-text);
}
.page-header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}
.page-body { padding: 28px 32px; flex: 1; }

/* ----------------------------------------------------------------
   Cards
   ---------------------------------------------------------------- */
.card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  overflow: hidden;
  transition: box-shadow var(--transition-slow);
}
.card:hover { box-shadow: var(--card-shadow-hover); }

.card-header {
  padding: 18px 22px;
  border-bottom: 1px solid var(--card-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.card-title { font-size: 0.9375rem; font-weight: 600; }
.card-body { padding: 22px; }

.stat-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: var(--card-radius);
  box-shadow: var(--card-shadow);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: box-shadow var(--transition-slow);
}
.stat-card:hover { box-shadow: var(--card-shadow-hover); }
.stat-card-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--content-secondary);
}
.stat-card-value {
  font-size: 1.875rem;
  font-weight: 700;
  line-height: 1;
}

/* ----------------------------------------------------------------
   Tables
   ---------------------------------------------------------------- */
.table-container { overflow-x: auto; }

table { width: 100%; border-collapse: collapse; font-size: 0.875rem; }
thead { background: var(--color-gray-50); }
th {
  text-align: left;
  padding: 11px 16px;
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--content-secondary);
  border-bottom: 1px solid var(--card-border);
  white-space: nowrap;
}
td {
  padding: 13px 16px;
  border-bottom: 1px solid var(--color-gray-100);
  vertical-align: middle;
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: var(--color-gray-50); }

/* ----------------------------------------------------------------
   Buttons
   ---------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 8px 16px;
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: background var(--transition), border-color var(--transition), opacity var(--transition);
  white-space: nowrap;
  line-height: 1.4;
}
.btn-primary {
  background: var(--color-black);
  color: var(--color-white);
  border-color: var(--color-black);
}
.btn-primary:hover { opacity: 0.80; }

.btn-outline {
  background: transparent;
  color: var(--content-text);
  border-color: var(--color-gray-300);
}
.btn-outline:hover { background: var(--color-gray-100); }

.btn-danger {
  background: #dc2626;
  color: #fff;
  border-color: #dc2626;
}
.btn-danger:hover { opacity: 0.85; }

.btn-sm { padding: 5px 11px; font-size: 0.8125rem; }
.btn svg { width: 14px; height: 14px; flex-shrink: 0; }

/* ----------------------------------------------------------------
   Forms
   ---------------------------------------------------------------- */
.form-group { margin-bottom: 18px; }
.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: 5px;
}
.form-control {
  width: 100%;
  padding: 8px 12px;
  font-size: 0.875rem;
  font-family: var(--font-family);
  color: var(--content-text);
  background: var(--color-white);
  border: 1px solid var(--color-gray-300);
  border-radius: 6px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.form-control:focus {
  border-color: var(--color-black);
  box-shadow: 0 0 0 3px rgba(0,0,0,0.07);
}
.form-control.is-invalid { border-color: #dc2626; }
.form-error { font-size: 0.75rem; color: #dc2626; margin-top: 4px; }
.form-check { display: flex; align-items: center; gap: 8px; }
.form-check input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--color-black); cursor: pointer; }
.form-check label { font-size: 0.875rem; font-weight: 500; cursor: pointer; }

/* ----------------------------------------------------------------
   Badges
   ---------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 8px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
}
.badge-success  { background: #dcfce7; color: #15803d; }
.badge-danger   { background: #fee2e2; color: #b91c1c; }
.badge-warning  { background: #fef9c3; color: #854d0e; }
.badge-gray     { background: var(--color-gray-100); color: var(--color-gray-700); }
.badge-black    { background: var(--color-black); color: var(--color-white); }

/* ----------------------------------------------------------------
   Flash Alerts
   ---------------------------------------------------------------- */
.flash-container { padding: 10px 32px 0; }
.alert {
  padding: 11px 15px;
  border-radius: 7px;
  font-size: 0.875rem;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}
.alert-success { background: #f0fdf4; color: #15803d; border: 1px solid #bbf7d0; }
.alert-danger  { background: #fef2f2; color: #b91c1c; border: 1px solid #fecaca; }
.alert-info    { background: #eff6ff; color: #1d4ed8; border: 1px solid #bfdbfe; }
.alert-warning { background: #fffbeb; color: #92400e; border: 1px solid #fde68a; }
.alert-close {
  background: none; border: none; font-size: 1.1rem;
  cursor: pointer; opacity: 0.5; color: inherit; padding: 0; line-height: 1;
}
.alert-close:hover { opacity: 1; }

/* ----------------------------------------------------------------
   Login Page
   ---------------------------------------------------------------- */
.login-shell { display: flex; min-height: 100vh; }

.login-left {
  width: 44%;
  background: var(--color-black);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 48px;
  gap: 28px;
}
.login-left-logo { width: 220px; height: auto; }
.login-left-tagline {
  color: var(--color-gray-500);
  font-size: 0.875rem;
  text-align: center;
  max-width: 260px;
  line-height: 1.65;
}

.login-right {
  flex: 1;
  background: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 48px;
}
.login-form-container { width: 100%; max-width: 380px; }
.login-title { font-size: 1.5rem; font-weight: 700; margin-bottom: 6px; }
.login-subtitle { font-size: 0.875rem; color: var(--content-secondary); margin-bottom: 32px; }

/* ----------------------------------------------------------------
   Utility Classes
   ---------------------------------------------------------------- */
.d-flex         { display: flex; }
.align-center   { align-items: center; }
.justify-between { justify-content: space-between; }
.justify-end    { justify-content: flex-end; }
.gap-8          { gap: 8px; }
.gap-12         { gap: 12px; }
.gap-16         { gap: 16px; }
.mb-16          { margin-bottom: 16px; }
.mb-24          { margin-bottom: 24px; }
.mb-28          { margin-bottom: 28px; }
.mt-8           { margin-top: 8px; }
.text-sm        { font-size: 0.875rem; }
.text-xs        { font-size: 0.75rem; }
.text-secondary { color: var(--content-secondary); }
.fw-600         { font-weight: 600; }
.fw-700         { font-weight: 700; }
.w-full         { width: 100%; }
.text-center    { text-align: center; }

/* ----------------------------------------------------------------
   Responsive
   ---------------------------------------------------------------- */
@media (max-width: 900px) {
  .sidebar { transform: translateX(-100%); }
  .sidebar.open { transform: translateX(0); }
  .main-content { margin-left: 0; }
  .sidebar-toggle { display: flex; }
  .page-header { padding: 0 18px; }
  .page-body { padding: 20px 18px; }
  .flash-container { padding: 10px 18px 0; }
}

@media (max-width: 600px) {
  .login-left { display: none; }
  .login-right { padding: 32px 24px; }
}