/* ─────────────────────────────────────────────────────────────────────────
   CSS Custom Properties — single source of truth for all theme colors.
   Never hardcode hex values in Tailwind classes or inline styles; always
   reference these variables.
───────────────────────────────────────────────────────────────────────── */
:root {
  /* Backgrounds */
  --clr-bg:         #050d1a;
  --clr-surface:    #0a1628;
  --clr-surface-2:  #0f2040;
  --clr-surface-3:  #163058;

  /* Borders */
  --clr-border:     rgba(100, 116, 139, 0.2);
  --clr-border-mid: rgba(100, 116, 139, 0.35);

  /* Brand / Primary */
  --clr-primary:       #3b82f6;
  --clr-primary-light: #60a5fa;
  --clr-primary-dim:   rgba(59, 130, 246, 0.15);
  --clr-primary-ring:  rgba(59, 130, 246, 0.4);

  /* Text */
  --clr-text:        #e2e8f0;
  --clr-text-sub:    #cbd5e1;
  --clr-text-muted:  #94a3b8;
  --clr-text-faint:  #64748b;

  /* Status */
  --clr-success:      #4ade80;
  --clr-success-bg:   rgba(34, 197, 94, 0.12);
  --clr-success-ring: rgba(34, 197, 94, 0.25);

  --clr-warning:      #fbbf24;
  --clr-warning-bg:   rgba(234, 179, 8, 0.12);
  --clr-warning-ring: rgba(234, 179, 8, 0.25);

  --clr-danger:       #f87171;
  --clr-danger-bg:    rgba(239, 68, 68, 0.12);
  --clr-danger-ring:  rgba(239, 68, 68, 0.25);

  --clr-info:         #818cf8;
  --clr-info-bg:      rgba(99, 102, 241, 0.12);
  --clr-info-ring:    rgba(99, 102, 241, 0.25);

  /* Misc */
  --radius-card: 0.75rem;
  --sidebar-w:   16rem;
  --transition:  150ms ease;
}

/* ── Reset ──────────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background-color: var(--clr-bg);
  color: var(--clr-text);
  font-family: 'Inter', system-ui, sans-serif;
}

/* ── Custom Scrollbar ───────────────────────────────────────────────────── */
::-webkit-scrollbar          { width: 5px; height: 5px; }
::-webkit-scrollbar-track    { background: var(--clr-surface); }
::-webkit-scrollbar-thumb    { background: var(--clr-surface-3); border-radius: 9999px; }
::-webkit-scrollbar-thumb:hover { background: var(--clr-primary); }

/* ── Sidebar nav items ──────────────────────────────────────────────────── */
.nav-item {
  color: var(--clr-text-muted);
  transition: background-color var(--transition), color var(--transition);
}
.nav-item:hover {
  background-color: rgba(255, 255, 255, 0.05);
  color: var(--clr-text);
}
.nav-active {
  background-color: var(--clr-primary-dim);
  color: var(--clr-primary-light);
}

/* ── Section label ──────────────────────────────────────────────────────── */
.section-label {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--clr-text-faint);
  margin-bottom: 1rem;
}

/* ── Filter / tab buttons ───────────────────────────────────────────────── */
.filter-btn {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 0.375rem 0.75rem;
  border-radius: 0.5rem;
  border: 1px solid var(--clr-surface-3);
  color: var(--clr-text-muted);
  background: transparent;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition), border-color var(--transition);
}
.filter-btn:hover,
.filter-btn:focus-visible {
  border-color: var(--clr-primary);
  color: var(--clr-primary-light);
  outline: none;
}
.filter-active {
  background-color: var(--clr-primary-dim);
  border-color: var(--clr-primary-ring);
  color: var(--clr-primary-light);
}

/* ── Table helpers ──────────────────────────────────────────────────────── */
.th-cell {
  padding: 0.75rem 1.25rem;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--clr-text-faint);
}
.td-cell {
  padding: 0.875rem 1.25rem;
  vertical-align: middle;
}

/* ── Status badges ──────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: 9999px;
  white-space: nowrap;
  letter-spacing: 0.02em;
}
.badge-active {
  background-color: var(--clr-success-bg);
  color: var(--clr-success);
  border: 1px solid var(--clr-success-ring);
}
.badge-inactive {
  background-color: var(--clr-danger-bg);
  color: var(--clr-danger);
  border: 1px solid var(--clr-danger-ring);
}
.badge-progress {
  background-color: var(--clr-warning-bg);
  color: var(--clr-warning);
  border: 1px solid var(--clr-warning-ring);
}
.badge-complete {
  background-color: var(--clr-success-bg);
  color: var(--clr-success);
  border: 1px solid var(--clr-success-ring);
}
.badge-on-hold {
  background-color: var(--clr-info-bg);
  color: var(--clr-info);
  border: 1px solid var(--clr-info-ring);
}
.badge-cancelled {
  background-color: rgba(100,116,139,0.12);
  color: var(--clr-text-faint);
  border: 1px solid rgba(100,116,139,0.25);
}
/* Invoice-specific badges */
.badge-draft {
  background-color: rgba(100,116,139,0.12);
  color: var(--clr-text-muted);
  border: 1px solid rgba(100,116,139,0.3);
}
.badge-sent {
  background-color: var(--clr-primary-dim);
  color: var(--clr-primary-light);
  border: 1px solid var(--clr-primary-ring);
}
.badge-overdue {
  background-color: var(--clr-danger-bg);
  color: var(--clr-danger);
  border: 1px solid var(--clr-danger-ring);
}

/* ── Skeleton loader ────────────────────────────────────────────────────── */
@keyframes shimmer {
  0%   { background-position: -600px 0; }
  100% { background-position:  600px 0; }
}
.card-skeleton {
  background: linear-gradient(
    90deg,
    var(--clr-surface)   25%,
    var(--clr-surface-2) 50%,
    var(--clr-surface)   75%
  );
  background-size: 600px 100%;
  animation: shimmer 1.4s infinite linear;
}

/* ── Toast notifications ────────────────────────────────────────────────── */
#toast-container {
  position: fixed;
  bottom: 1.25rem;
  right: 1.25rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}
.toast {
  pointer-events: auto;
  display: flex;
  align-items: center;
  gap: 0.625rem;
  padding: 0.75rem 1rem;
  border-radius: 0.625rem;
  font-size: 0.8125rem;
  font-weight: 500;
  border: 1px solid transparent;
  backdrop-filter: blur(8px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
  animation: toast-in 0.25s ease forwards;
  max-width: 22rem;
}
.toast-success { background: rgba(15, 32, 64, 0.95); border-color: var(--clr-success-ring); color: var(--clr-success); }
.toast-error   { background: rgba(15, 32, 64, 0.95); border-color: var(--clr-danger-ring);  color: var(--clr-danger); }
.toast-info    { background: rgba(15, 32, 64, 0.95); border-color: var(--clr-primary-ring); color: var(--clr-primary-light); }

@keyframes toast-in {
  from { opacity: 0; transform: translateY(0.5rem); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes toast-out {
  from { opacity: 1; transform: translateY(0); }
  to   { opacity: 0; transform: translateY(0.5rem); }
}
.toast.removing { animation: toast-out 0.2s ease forwards; }

/* ── Modal ──────────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(3px);
  z-index: 400;
  display: flex;
  align-items: flex-end;   /* mobile: sheet from bottom */
  justify-content: center;
  padding: 0;
  opacity: 0;
  transition: opacity 0.2s ease;
}
/* On md+ screens, center the modal */
@media (min-width: 768px) {
  .modal-backdrop {
    align-items: center;
    padding: 1.5rem;
  }
}
.modal-backdrop.open { opacity: 1; }

.modal-box {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-mid);
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  width: 100%;
  max-height: 92dvh;
  overflow-y: auto;
  transform: translateY(100%);
  transition: transform 0.25s ease;
}
@media (min-width: 768px) {
  .modal-box {
    border-radius: var(--radius-card);
    width: 100%;
    max-width: 560px;
    max-height: 90dvh;
    transform: translateY(1rem) scale(0.98);
    transition: transform 0.2s ease, opacity 0.2s ease;
    opacity: 0;
  }
}
.modal-backdrop.open .modal-box {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* ── Confirm dialog (smaller modal variant) ─────────────────────────────── */
.confirm-box {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border-mid);
  border-radius: var(--radius-card) var(--radius-card) 0 0;
  width: 100%;
  max-width: 400px;
  transform: translateY(100%);
  transition: transform 0.25s ease;
  padding: 1.5rem;
}
@media (min-width: 768px) {
  .confirm-box {
    border-radius: var(--radius-card);
    transform: translateY(1rem) scale(0.98);
    opacity: 0;
    transition: transform 0.2s ease, opacity 0.2s ease;
  }
}
.modal-backdrop.open .confirm-box {
  transform: translateY(0) scale(1);
  opacity: 1;
}

/* ── Form elements ──────────────────────────────────────────────────────── */
.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.375rem;
}
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  background: var(--clr-surface-2);
  border: 1px solid var(--clr-border-mid);
  border-radius: 0.5rem;
  color: var(--clr-text);
  font-size: 0.875rem;
  padding: 0.625rem 0.875rem;
  transition: border-color var(--transition), box-shadow var(--transition);
  outline: none;
  font-family: inherit;
}
.form-input::placeholder,
.form-textarea::placeholder { color: var(--clr-text-faint); }
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px var(--clr-primary-dim);
}
.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 1rem;
  padding-right: 2.25rem;
}
.form-select option { background: var(--clr-surface-2); color: var(--clr-text); }
.form-textarea { resize: vertical; min-height: 5rem; }

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.375rem;
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.5rem 1rem;
  border-radius: 0.5rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color var(--transition), border-color var(--transition),
              color var(--transition), box-shadow var(--transition), transform var(--transition);
  outline: none;
  white-space: nowrap;
}
.btn:focus-visible { box-shadow: 0 0 0 3px var(--clr-primary-ring); }
.btn:active        { transform: scale(0.97); }

.btn-primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}
.btn-primary:hover { background: var(--clr-primary-light); border-color: var(--clr-primary-light); }

.btn-ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border-color: var(--clr-border-mid);
}
.btn-ghost:hover { background: rgba(255,255,255,0.05); color: var(--clr-text); border-color: var(--clr-text-faint); }

.btn-danger {
  background: var(--clr-danger-bg);
  color: var(--clr-danger);
  border-color: var(--clr-danger-ring);
}
.btn-danger:hover { background: rgba(239,68,68,0.2); }

.btn-icon {
  padding: 0.45rem;
  border-radius: 0.45rem;
  background: transparent;
  border-color: var(--clr-border-mid);
  color: var(--clr-text-muted);
}
.btn-icon:hover { background: rgba(255,255,255,0.06); color: var(--clr-text); }

/* ── Avatar initials ────────────────────────────────────────────────────── */
.avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 9999px;
  font-weight: 700;
  letter-spacing: 0.02em;
  flex-shrink: 0;
  text-transform: uppercase;
  font-size: 0.75rem;
}

/* ── Empty state ────────────────────────────────────────────────────────── */
.empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 4rem 1rem;
  color: var(--clr-text-faint);
  gap: 0.75rem;
  text-align: center;
}
.empty-state svg { color: var(--clr-surface-3); }
.empty-state p   { font-size: 0.875rem; }

/* ── Card ───────────────────────────────────────────────────────────────── */
.card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-card);
}

/* ── Notification Panel (right-side drawer) ─────────────────────────── */
#notif-overlay       { pointer-events: none; }
#notif-overlay.open  { pointer-events: auto; opacity: 1 !important; }
#notif-drawer.open   { transform: translateX(0) !important; }

.notif-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 0.875rem 1.25rem;
  border-bottom: 1px solid var(--clr-border);
  transition: background 0.15s ease;
}
.notif-item:last-child  { border-bottom: none; }
.notif-item.unread      { background: rgba(99,102,241,0.06); }
.notif-item:hover       { background: var(--clr-surface-2); }

.notif-icon {
  width: 2rem;
  height: 2rem;
  border-radius: 0.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.notif-title {
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  line-height: 1.4;
}
.notif-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--clr-primary);
  flex-shrink: 0;
}
.notif-msg {
  font-size: 0.75rem;
  color: var(--clr-text-muted);
  margin-top: 0.2rem;
  line-height: 1.45;
}
.notif-time {
  font-size: 0.6875rem;
  color: var(--clr-text-faint);
  margin-top: 0.3rem;
}
.notif-dismiss {
  width: 1.5rem;
  height: 1.5rem;
  border-radius: 0.375rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--clr-text-faint);
  border: none;
  background: transparent;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.notif-dismiss:hover {
  background: var(--clr-danger-bg);
  color: var(--clr-danger);
}

/* ── Light Theme ─────────────────────────────────────────────────────────
   Applied when <html data-theme="light">.
   All other styling uses CSS variables from :root so they adapt automatically.
───────────────────────────────────────────────────────────────────────── */
[data-theme="light"] {
  --clr-bg:         #f1f5f9;
  --clr-surface:    #ffffff;
  --clr-surface-2:  #f8fafc;
  --clr-surface-3:  #e2e8f0;

  --clr-border:     rgba(30, 41, 59, 0.12);
  --clr-border-mid: rgba(30, 41, 59, 0.2);

  --clr-primary:       #2563eb;
  --clr-primary-light: #3b82f6;
  --clr-primary-dim:   rgba(37, 99, 235, 0.08);
  --clr-primary-ring:  rgba(37, 99, 235, 0.25);

  --clr-text:        #0f172a;
  --clr-text-sub:    #1e293b;
  --clr-text-muted:  #475569;
  --clr-text-faint:  #94a3b8;

  --clr-success:      #15803d;
  --clr-success-bg:   rgba(21, 128, 61, 0.08);
  --clr-success-ring: rgba(21, 128, 61, 0.2);

  --clr-warning:      #b45309;
  --clr-warning-bg:   rgba(180, 83, 9, 0.08);
  --clr-warning-ring: rgba(180, 83, 9, 0.2);

  --clr-danger:       #dc2626;
  --clr-danger-bg:    rgba(220, 38, 38, 0.08);
  --clr-danger-ring:  rgba(220, 38, 38, 0.2);

  --clr-info:         #4f46e5;
  --clr-info-bg:      rgba(79, 70, 229, 0.08);
  --clr-info-ring:    rgba(79, 70, 229, 0.2);
}

/* The header has a hardcoded dark rgba background — override it */
[data-theme="light"] header {
  background: rgba(248, 250, 252, 0.92) !important;
}

/* Welcome banner: keep saturated blue so white text stays readable in light mode */
[data-theme="light"] #overview-banner {
  background: linear-gradient(to right, #1e3a8a, #1d4ed8, #2563eb) !important;
}
/* Restore white text inside the banner (overrides the broad .text-white rule below) */
[data-theme="light"] #overview-banner .text-white {
  color: #fff !important;
}

/* Toast uses a hardcoded dark background — override it */
[data-theme="light"] .toast {
  background: rgba(255, 255, 255, 0.97) !important;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
}

/* Tailwind's text-white is used on titles/icons throughout the layout.
   In light mode, override it so text remains readable on light surfaces.
   Exception: elements inside the primary-color logo box look fine with white. */
[data-theme="light"] .text-white {
  color: var(--clr-text) !important;
}