/* ─── Reset & Base ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* Palette */
  --clr-bg:         #F8FAFC;
  --clr-surface:    #FFFFFF;
  --clr-border:     #E2E8F0;
  --clr-primary:    #1E3A5F;
  --clr-primary-h:  #16304F;
  --clr-accent:     #0EA5E9;
  --clr-accent-h:   #0284C7;
  --clr-success:    #22C55E;
  --clr-warning:    #F59E0B;
  --clr-danger:     #EF4444;
  --clr-text:       #0F172A;
  --clr-muted:      #64748B;
  --clr-subtle:     #CBD5E1;

  /* Typography */
  --font-main: 'Inter', system-ui, sans-serif;
  --fs-xs:   0.75rem;
  --fs-sm:   0.875rem;
  --fs-base: 1rem;
  --fs-lg:   1.125rem;
  --fs-xl:   1.25rem;
  --fs-2xl:  1.5rem;
  --fs-3xl:  1.875rem;

  /* Spacing */
  --radius-sm:  6px;
  --radius-md:  10px;
  --radius-lg:  16px;
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08);
  --shadow-md:  0 4px 16px rgba(0,0,0,.10);
  --shadow-lg:  0 8px 32px rgba(0,0,0,.12);

  /* Transitions */
  --t-fast: 150ms ease;
  --t-base: 250ms ease;
}

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-main);
  font-size: var(--fs-base);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--clr-accent); text-decoration: none; transition: color var(--t-fast); }
a:hover { color: var(--clr-accent-h); }

img { max-width: 100%; display: block; }

/* ─── Typography ─────────────────────────────────────────────────────── */
h1, h2, h3, h4, h5 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--clr-text);
}
h1 { font-size: var(--fs-3xl); }
h2 { font-size: var(--fs-2xl); }
h3 { font-size: var(--fs-xl); }
h4 { font-size: var(--fs-lg); }

p { color: var(--clr-muted); line-height: 1.7; }

/* ─── Navbar ─────────────────────────────────────────────────────────── */
.navbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--clr-surface);
  border-bottom: 1px solid var(--clr-border);
  box-shadow: var(--shadow-sm);
}

.navbar__inner {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.navbar__brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--clr-primary);
  text-decoration: none;
}

.navbar__brand-icon {
  width: 36px;
  height: 36px;
  background: var(--clr-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}

.navbar__brand-icon svg { color: #fff; }

.navbar__nav {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
}

.navbar__nav a {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--clr-muted);
  transition: background var(--t-fast), color var(--t-fast);
  text-decoration: none;
}

.navbar__nav a:hover,
.navbar__nav a.active {
  background: var(--clr-bg);
  color: var(--clr-primary);
}

.navbar__nav a.active { font-weight: 600; }

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar__user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-radius: var(--radius-md);
  border: 1px solid var(--clr-border);
  background: var(--clr-bg);
  cursor: pointer;
  transition: box-shadow var(--t-fast);
}
.navbar__user:hover { box-shadow: var(--shadow-sm); }

.navbar__avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--clr-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--fs-sm);
  font-weight: 700;
  color: #fff;
}

.navbar__username {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-text);
}

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  transition: background var(--t-fast);
}
.navbar__hamburger:hover { background: var(--clr-bg); }

.navbar__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--t-base), opacity var(--t-base);
}

/* Mobile menu */
.navbar__mobile {
  display: none;
  position: fixed;
  inset: 64px 0 0 0;
  background: var(--clr-surface);
  border-top: 1px solid var(--clr-border);
  z-index: 99;
  padding: 16px;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform var(--t-base);
}

.navbar__mobile.open {
  display: block;
  transform: translateX(0);
}

.navbar__mobile-nav {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.navbar__mobile-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--clr-muted);
  text-decoration: none;
  transition: background var(--t-fast), color var(--t-fast);
}

.navbar__mobile-nav a:hover,
.navbar__mobile-nav a.active {
  background: var(--clr-bg);
  color: var(--clr-primary);
}

.navbar__mobile-divider {
  height: 1px;
  background: var(--clr-border);
  margin: 12px 0;
}

.navbar__mobile-logout {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-md);
  font-size: var(--fs-base);
  font-weight: 500;
  color: var(--clr-danger);
  background: none;
  border: none;
  cursor: pointer;
  transition: background var(--t-fast);
  text-align: left;
}
.navbar__mobile-logout:hover { background: #FEF2F2; }

/* ─── Buttons ─────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-weight: 600;
  font-family: var(--font-main);
  cursor: pointer;
  border: 1px solid transparent;
  transition: background var(--t-fast), box-shadow var(--t-fast), transform var(--t-fast);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  line-height: 1;
}

.btn:active { transform: translateY(1px); }
.btn:disabled { opacity: .5; cursor: not-allowed; transform: none; }

.btn-primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}
.btn-primary:hover:not(:disabled) {
  background: var(--clr-primary-h);
  box-shadow: 0 4px 12px rgba(30,58,95,.25);
}

.btn-accent {
  background: var(--clr-accent);
  color: #fff;
  border-color: var(--clr-accent);
}
.btn-accent:hover:not(:disabled) {
  background: var(--clr-accent-h);
  box-shadow: 0 4px 12px rgba(14,165,233,.30);
}

.btn-outline {
  background: transparent;
  color: var(--clr-primary);
  border-color: var(--clr-border);
}
.btn-outline:hover:not(:disabled) {
  background: var(--clr-bg);
  border-color: var(--clr-primary);
}

.btn-ghost {
  background: transparent;
  color: var(--clr-muted);
  border-color: transparent;
}
.btn-ghost:hover:not(:disabled) { background: var(--clr-bg); color: var(--clr-text); }

.btn-danger {
  background: var(--clr-danger);
  color: #fff;
  border-color: var(--clr-danger);
}
.btn-danger:hover:not(:disabled) {
  background: #DC2626;
  box-shadow: 0 4px 12px rgba(239,68,68,.25);
}

.btn-sm { padding: 7px 14px; font-size: var(--fs-xs); }
.btn-lg { padding: 14px 28px; font-size: var(--fs-base); }
.btn-full { width: 100%; }

.btn-loading {
  position: relative;
  color: transparent !important;
  pointer-events: none;
}
.btn-loading::after {
  content: '';
  position: absolute;
  inset: 0;
  margin: auto;
  width: 18px;
  height: 18px;
  border: 2px solid rgba(255,255,255,.35);
  border-top-color: #fff;
  border-radius: 50%;
  animation: spin .65s linear infinite;
}

/* ─── Form Elements ──────────────────────────────────────────────────── */
.form-group { display: flex; flex-direction: column; gap: 6px; }

.form-label {
  font-size: var(--fs-sm);
  font-weight: 600;
  color: var(--clr-text);
}

.form-label .required { color: var(--clr-danger); margin-left: 2px; }

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  font-family: var(--font-main);
  color: var(--clr-text);
  background: var(--clr-surface);
  transition: border-color var(--t-fast), box-shadow var(--t-fast);
  outline: none;
  line-height: 1.5;
}

.form-control::placeholder { color: var(--clr-subtle); }

.form-control:focus {
  border-color: var(--clr-accent);
  box-shadow: 0 0 0 3px rgba(14,165,233,.12);
}

.form-control.error { border-color: var(--clr-danger); }
.form-control.error:focus { box-shadow: 0 0 0 3px rgba(239,68,68,.12); }

.form-hint {
  font-size: var(--fs-xs);
  color: var(--clr-muted);
}
.form-error {
  font-size: var(--fs-xs);
  color: var(--clr-danger);
  display: none;
}
.form-error.visible { display: block; }

.input-wrap { position: relative; }

.input-wrap .form-control { padding-right: 42px; }

.input-icon {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--clr-muted);
  cursor: pointer;
  background: none;
  border: none;
  padding: 2px;
  display: flex;
  align-items: center;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

/* ─── Cards ──────────────────────────────────────────────────────────── */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--clr-border);
}

.card-title {
  font-size: var(--fs-lg);
  font-weight: 700;
  color: var(--clr-text);
}

/* ─── Badge / Chip ───────────────────────────────────────────────────── */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: 600;
}

.badge-success { background: #DCFCE7; color: #166534; }
.badge-warning { background: #FEF3C7; color: #92400E; }
.badge-danger  { background: #FEE2E2; color: #991B1B; }
.badge-info    { background: #E0F2FE; color: #075985; }
.badge-muted   { background: var(--clr-bg); color: var(--clr-muted); border: 1px solid var(--clr-border); }

/* ─── Toast Notification System ──────────────────────────────────────── */
#toast-container {
  position: fixed;
  top: 80px;
  right: 20px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
  max-width: 360px;
  width: calc(100vw - 40px);
}

.toast {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 14px 16px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  pointer-events: all;
  animation: toastIn var(--t-base) ease forwards;
  position: relative;
  overflow: hidden;
}

.toast.removing { animation: toastOut var(--t-base) ease forwards; }

.toast::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  width: 100%;
  animation: toastBar 4s linear forwards;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
}

.toast-success::after { background: var(--clr-success); }
.toast-error::after   { background: var(--clr-danger); }
.toast-warning::after { background: var(--clr-warning); }
.toast-info::after    { background: var(--clr-accent); }

.toast-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  margin-top: 1px;
}

.toast-success .toast-icon { color: var(--clr-success); }
.toast-error   .toast-icon { color: var(--clr-danger); }
.toast-warning .toast-icon { color: var(--clr-warning); }
.toast-info    .toast-icon { color: var(--clr-accent); }

.toast-body { flex: 1; min-width: 0; }

.toast-title {
  font-size: var(--fs-sm);
  font-weight: 700;
  color: var(--clr-text);
  line-height: 1.3;
}

.toast-msg {
  font-size: var(--fs-xs);
  color: var(--clr-muted);
  margin-top: 2px;
  line-height: 1.5;
}

.toast-close {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--clr-subtle);
  padding: 2px;
  flex-shrink: 0;
  transition: color var(--t-fast);
  line-height: 1;
}
.toast-close:hover { color: var(--clr-muted); }

/* ─── Page Layout ────────────────────────────────────────────────────── */
.page-wrapper {
  max-width: 1200px;
  margin: 0 auto;
  padding: 32px 24px;
}

.page-header { margin-bottom: 28px; }

.page-title {
  font-size: var(--fs-2xl);
  font-weight: 700;
  color: var(--clr-text);
}

.page-subtitle {
  font-size: var(--fs-sm);
  color: var(--clr-muted);
  margin-top: 4px;
}

/* ─── Risk Badge ─────────────────────────────────────────────────────── */
.risk-indicator {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: var(--fs-xs);
  font-weight: 700;
}

.risk-low    { background: #DCFCE7; color: #166534; }
.risk-medium { background: #FEF3C7; color: #92400E; }
.risk-high   { background: #FEE2E2; color: #991B1B; }

.risk-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

.risk-low    .risk-dot { background: var(--clr-success); }
.risk-medium .risk-dot { background: var(--clr-warning); }
.risk-high   .risk-dot { background: var(--clr-danger); }

/* ─── Divider ────────────────────────────────────────────────────────── */
.divider {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--clr-muted);
  font-size: var(--fs-xs);
}
.divider::before, .divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--clr-border);
}

/* ─── Animations ─────────────────────────────────────────────────────── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .4; }
}

@keyframes toastIn {
  from { opacity: 0; transform: translateX(120%); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes toastOut {
  from { opacity: 1; transform: translateX(0); }
  to   { opacity: 0; transform: translateX(120%); }
}

@keyframes toastBar {
  from { width: 100%; }
  to   { width: 0; }
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ─── Responsive ─────────────────────────────────────────────────────── */
@media (max-width: 1024px) {
  .page-wrapper { padding: 24px 20px; }
  .navbar__inner { padding: 0 20px; }
  .form-row { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .navbar__nav,
  .navbar__actions { display: none; }
  .navbar__hamburger { display: flex; }

  .page-wrapper { padding: 20px 16px; }

  .form-row { grid-template-columns: 1fr; }

  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-xl); }

  .card { padding: 18px; }

  #toast-container { top: 72px; right: 12px; left: 12px; max-width: none; width: auto; }
}

@media (max-width: 480px) {
  .navbar__inner { padding: 0 14px; height: 56px; }
  .navbar__mobile { top: 56px; }
  .navbar__brand { font-size: var(--fs-base); }
  .navbar__brand-icon { width: 30px; height: 30px; }

  .page-wrapper { padding: 16px 14px; }

  .btn-lg { padding: 13px 22px; }

  h1 { font-size: var(--fs-xl); }

  .card { padding: 16px; border-radius: var(--radius-md); }

  #toast-container { top: 66px; right: 10px; left: 10px; }
}

/* ─── Utilities ──────────────────────────────────────────────────────── */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.text-muted { color: var(--clr-muted); }
.text-danger { color: var(--clr-danger); }
.text-success { color: var(--clr-success); }
.text-center { text-align: center; }
.fw-600 { font-weight: 600; }
.fw-700 { font-weight: 700; }
.mt-4 { margin-top: 4px; }
.mt-8 { margin-top: 8px; }
.mt-12 { margin-top: 12px; }
.mt-16 { margin-top: 16px; }
.mt-24 { margin-top: 24px; }
.gap-8 { gap: 8px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.justify-between { justify-content: space-between; }
.flex-col { flex-direction: column; }