@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --bg-body: #0a0a1a;
  --bg-surface: #12122a;
  --bg-card: #1a1a35;
  --bg-card-hover: #222245;
  --bg-input: #1e1e3a;
  --accent: #3b82f6;
  --accent-light: #60a5fa;
  --accent-gradient: linear-gradient(135deg, #2563eb 0%, #60a5fa 100%);
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #555570;
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(59, 130, 246, 0.3);
  --success: #10b981;
  --success-bg: rgba(16, 185, 129, 0.12);
  --danger: #ef4444;
  --danger-bg: rgba(239, 68, 68, 0.12);
  --warning: #f59e0b;
  --warning-bg: rgba(245, 158, 11, 0.12);
  --info: #3b82f6;
  --info-bg: rgba(59, 130, 246, 0.12);
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-pill: 50px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --transition: all 0.2s ease;
  --sidebar-width: 240px;
  --bottomnav-height: 72px;
}
* { box-sizing: border-box; }
body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
  margin: 0;
}
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }

/* SIDEBAR */
.app-sidebar {
  position: fixed; top: 0; left: 0;
  width: var(--sidebar-width); height: 100vh;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  z-index: 1040; transition: transform 0.3s ease;
}
.sidebar-brand {
  padding: 20px; font-size: 1.1rem; font-weight: 700;
  color: var(--text-primary); text-decoration: none;
  display: flex; align-items: center; gap: 10px;
  border-bottom: 1px solid var(--border);
}
.brand-icon {
  width: 34px; height: 34px;
  background: var(--accent-gradient);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}
.sidebar-nav {
  flex: 1; padding: 12px 10px;
  list-style: none; overflow-y: auto; margin: 0;
}
.sidebar-nav .nav-section {
  font-size: 0.65rem; font-weight: 600;
  text-transform: uppercase; letter-spacing: 1.5px;
  color: var(--text-muted); padding: 16px 12px 6px;
}
.sidebar-nav .nav-link {
  display: flex; align-items: center; gap: 10px;
  padding: 10px 12px; color: var(--text-secondary);
  text-decoration: none; border-radius: var(--radius-md);
  font-size: 0.85rem; font-weight: 500;
  transition: var(--transition); margin-bottom: 2px;
}
.sidebar-nav .nav-link:hover {
  background: rgba(124, 92, 252, 0.08); color: var(--text-primary);
}
.sidebar-nav .nav-link.active {
  background: rgba(124, 92, 252, 0.15); color: var(--accent-light);
}
.sidebar-nav .nav-link i { font-size: 1.1rem; width: 20px; text-align: center; }
.sidebar-footer {
  padding: 14px; border-top: 1px solid var(--border);
}

/* MAIN */
.app-main {
  margin-left: var(--sidebar-width);
  min-height: 100vh; padding: 24px 28px 32px;
}

/* BOTTOM NAV */
.app-bottomnav {
  display: none; position: fixed; bottom: 0; left: 0; right: 0;
  height: var(--bottomnav-height);
  background: rgba(18, 18, 42, 0.95);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--border);
  z-index: 1040;
}
.bottomnav-inner {
  display: flex; justify-content: space-around;
  align-items: center; height: 100%;
}
.bottomnav-item {
  display: flex; flex-direction: column; align-items: center; gap: 3px;
  text-decoration: none; color: var(--text-muted);
  font-size: 0.6rem; font-weight: 500; padding: 8px 10px;
  transition: var(--transition);
}
.bottomnav-item i { font-size: 1.25rem; }
.bottomnav-item.active, .bottomnav-item:hover { color: var(--accent-light); }

/* RESPONSIVE */
@media (max-width: 991.98px) {
  .app-sidebar { transform: translateX(-100%); }
  .app-sidebar.show { transform: translateX(0); }
  .app-main { margin-left: 0; padding: 16px 14px calc(var(--bottomnav-height) + 16px); }
  .app-bottomnav { display: block; }
  .sidebar-overlay {
    display: none; position: fixed; inset: 0;
    background: rgba(0,0,0,0.5); z-index: 1039;
  }
  .sidebar-overlay.show { display: block; }
}

/* PAGE HEADER */
.page-header { margin-bottom: 24px; }
.page-title { font-size: 1.6rem; font-weight: 700; }
.page-subtitle { font-size: 0.85rem; color: var(--text-secondary); margin-top: 2px; }

/* CARDS */
.card-dark {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); transition: var(--transition);
}
.card-dark:hover { border-color: var(--border-accent); }
.card-dark .card-body { padding: 20px; }
.card-gradient {
  background: var(--accent-gradient); border: none;
  border-radius: var(--radius-lg); color: #fff;
}
.card-gradient .card-body { padding: 20px; }

/* KPI */
.kpi-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 18px;
  transition: var(--transition); text-decoration: none; display: block; color: inherit;
}
.kpi-card:hover { border-color: var(--border-accent); transform: translateY(-2px); color: inherit; }
.kpi-label {
  font-size: 0.75rem; font-weight: 600; color: var(--text-secondary);
  text-transform: uppercase; letter-spacing: 0.5px;
}
.kpi-value { font-size: 1.6rem; font-weight: 700; margin-top: 6px; }
.kpi-value.positive { color: var(--success); }
.kpi-value.negative { color: var(--danger); }

/* STATUS PILLS */
.status-pill {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 3px 10px; border-radius: var(--radius-pill);
  font-size: 0.7rem; font-weight: 600;
}
.status-pill.pending { background: var(--warning-bg); color: var(--warning); }
.status-pill.received, .status-pill.paid, .status-pill.done {
  background: var(--success-bg); color: var(--success);
}

/* TRANSACTIONS */
.transaction-list { list-style: none; padding: 0; margin: 0; }
.transaction-item {
  display: flex; align-items: center;
  padding: 12px 16px; border-bottom: 1px solid var(--border);
  transition: var(--transition); gap: 12px;
}
.transaction-item:last-child { border-bottom: none; }
.transaction-item:hover { background: rgba(255,255,255,0.02); }
.transaction-icon {
  width: 38px; height: 38px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem; flex-shrink: 0;
}
.transaction-icon.income { background: var(--success-bg); color: var(--success); }
.transaction-icon.expense { background: var(--danger-bg); color: var(--danger); }
.transaction-info { flex: 1; min-width: 0; }
.transaction-label {
  font-size: 0.88rem; font-weight: 500;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.transaction-meta { font-size: 0.72rem; color: var(--text-secondary); margin-top: 1px; }
.transaction-amount { font-size: 0.92rem; font-weight: 600; white-space: nowrap; }
.transaction-amount.positive { color: var(--success); }
.transaction-amount.negative { color: var(--danger); }
.transaction-actions { display: flex; gap: 2px; flex-shrink: 0; }

/* BUTTONS */
.btn-accent {
  background: var(--accent-gradient); color: #fff; border: none;
  border-radius: var(--radius-md); padding: 9px 20px;
  font-weight: 600; font-size: 0.85rem; transition: var(--transition);
  cursor: pointer; display: inline-flex; align-items: center; gap: 6px;
}
.btn-accent:hover { opacity: 0.9; transform: translateY(-1px); color: #fff; }
.btn-ghost {
  background: transparent; color: var(--text-secondary);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 8px 16px; font-weight: 500; font-size: 0.85rem;
  transition: var(--transition); cursor: pointer;
}
.btn-ghost:hover { background: rgba(255,255,255,0.05); color: var(--text-primary); }
.btn-icon {
  width: 34px; height: 34px; border-radius: var(--radius-sm);
  display: inline-flex; align-items: center; justify-content: center;
  border: none; background: transparent; color: var(--text-secondary);
  transition: var(--transition); padding: 0; cursor: pointer;
}
.btn-icon:hover { background: rgba(255,255,255,0.08); color: var(--text-primary); }
.btn-icon.success:hover { color: var(--success); background: var(--success-bg); }
.btn-icon.danger:hover { color: var(--danger); background: var(--danger-bg); }
.btn-icon.warning:hover { color: var(--warning); background: var(--warning-bg); }

/* FORMS */
.form-dark { background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius-md); color: var(--text-primary);
  padding: 9px 13px; font-size: 0.88rem; transition: var(--transition);
  width: 100%;
}
.form-dark:focus { border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(124,92,252,0.15); outline: none; background: var(--bg-input); color: var(--text-primary);
}
.form-dark::placeholder { color: var(--text-muted); }
.form-label-dark { font-size: 0.78rem; font-weight: 500; color: var(--text-secondary); margin-bottom: 5px; }
select.form-dark option { background: var(--bg-surface); color: var(--text-primary); }

/* MODALS */
.modal-content {
  background: var(--bg-surface) !important; border: 1px solid var(--border) !important;
  border-radius: var(--radius-xl) !important; color: var(--text-primary);
}
.modal-header { border-bottom: 1px solid var(--border) !important; padding: 18px 22px !important; }
.modal-title { font-weight: 600 !important; font-size: 1.05rem !important; }
.modal-body { padding: 22px !important; }
.modal-footer { border-top: 1px solid var(--border) !important; padding: 14px 22px !important; }
.btn-close { filter: invert(1) grayscale(100%) brightness(200%); }
.modal .form-control, .modal .form-select {
  background: var(--bg-input); border: 1px solid var(--border);
  color: var(--text-primary); border-radius: var(--radius-md);
}
.modal .form-control:focus, .modal .form-select:focus {
  border-color: var(--accent); box-shadow: 0 0 0 3px rgba(124,92,252,0.15);
  background: var(--bg-input); color: var(--text-primary);
}
.modal .form-label { color: var(--text-secondary); font-size: 0.78rem; font-weight: 500; }
.modal .form-select option { background: var(--bg-surface); color: var(--text-primary); }

/* TABS */
.nav-tabs-dark { border: none; gap: 4px; margin-bottom: 20px; flex-wrap: nowrap; overflow-x: auto; }
.nav-tabs-dark .nav-link {
  background: transparent; border: none; color: var(--text-secondary);
  font-weight: 500; font-size: 0.85rem; padding: 9px 18px;
  border-radius: var(--radius-pill); transition: var(--transition); white-space: nowrap;
}
.nav-tabs-dark .nav-link:hover { color: var(--text-primary); background: rgba(255,255,255,0.05); }
.nav-tabs-dark .nav-link.active { background: var(--accent-gradient); color: #fff; }

/* CHART */
.chart-container {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-lg); padding: 18px;
}

/* SECTIONS */
.section-title {
  font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
  letter-spacing: 1px; color: var(--text-muted); margin-bottom: 12px;
  padding-bottom: 8px;
}

/* COLLAPSE TOGGLE */
.collapse-toggle {
  display: flex; align-items: center; gap: 8px;
  padding: 10px 14px; background: rgba(255,255,255,0.03);
  border: 1px solid var(--border); border-radius: var(--radius-md);
  color: var(--text-secondary); font-size: 0.82rem; font-weight: 500;
  cursor: pointer; transition: var(--transition); text-decoration: none; width: 100%;
}
.collapse-toggle:hover { background: rgba(255,255,255,0.06); color: var(--text-primary); }

/* QUICK ACTIONS */
.quick-actions { display: flex; gap: 6px; overflow-x: auto; padding-bottom: 4px; scrollbar-width: none; }
.quick-actions::-webkit-scrollbar { display: none; }
.quick-action-btn {
  display: flex; align-items: center; gap: 5px;
  padding: 7px 14px; background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-pill); color: var(--text-secondary);
  font-size: 0.78rem; font-weight: 500; white-space: nowrap;
  text-decoration: none; transition: var(--transition);
}
.quick-action-btn:hover { border-color: var(--accent); color: var(--accent-light); }
.quick-action-btn.active { background: var(--accent-gradient); border-color: transparent; color: #fff; }

/* HOME */
.home-card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 24px;
  text-decoration: none; color: var(--text-primary);
  display: flex; flex-direction: column; gap: 14px;
  transition: var(--transition); height: 100%;
}
.home-card:hover {
  border-color: var(--accent); transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(124,92,252,0.15); color: var(--text-primary);
}
.home-card-icon {
  width: 46px; height: 46px; border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center; font-size: 1.2rem;
}
.home-card-title { font-size: 1.05rem; font-weight: 600; }
.home-card-desc { font-size: 0.82rem; color: var(--text-secondary); }

/* LOGIN */
.login-container {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: var(--bg-body);
}
.login-card {
  background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: var(--radius-xl); padding: 36px; width: 100%; max-width: 400px;
  box-shadow: var(--shadow);
}
.login-logo {
  width: 52px; height: 52px; background: var(--accent-gradient);
  border-radius: var(--radius-lg); display: flex; align-items: center;
  justify-content: center; font-size: 1.4rem; margin: 0 auto 20px;
}

/* MANAGE */
.manage-item {
  display: flex; align-items: center;
  padding: 14px 16px; border-bottom: 1px solid var(--border); gap: 14px;
}
.manage-item:last-child { border-bottom: none; }
.manage-item-info { flex: 1; }
.manage-item-title { font-weight: 500; font-size: 0.92rem; }
.manage-item-meta { font-size: 0.78rem; color: var(--text-secondary); margin-top: 1px; }
.manage-item-amount { font-weight: 600; font-size: 0.92rem; white-space: nowrap; }

/* LANG SELECT */
.lang-select {
  background: var(--bg-input); border: 1px solid var(--border);
  border-radius: var(--radius-sm); color: var(--text-secondary);
  padding: 5px 8px; font-size: 0.78rem; cursor: pointer; width: 100%;
}
.lang-select:focus { border-color: var(--accent); outline: none; }
.lang-select option { background: var(--bg-surface); color: var(--text-primary); }

/* TOASTS */
.toast-container-custom { position: fixed; top: 20px; right: 20px; z-index: 2000; }
.toast-dark {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: var(--radius-md); color: var(--text-primary);
  padding: 12px 18px; margin-bottom: 8px; display: flex; align-items: center;
  gap: 10px; box-shadow: var(--shadow); animation: toastIn 0.3s ease;
  font-size: 0.85rem;
}
@keyframes toastIn { from { transform: translateX(100%); opacity: 0; } to { transform: translateX(0); opacity: 1; } }

/* BADGE */
.badge-dark {
  background: rgba(255,255,255,0.08); color: var(--text-secondary);
  padding: 3px 9px; border-radius: var(--radius-pill); font-size: 0.68rem; font-weight: 600;
}
.badge-accent {
  background: rgba(124,92,252,0.15); color: var(--accent-light);
  padding: 3px 9px; border-radius: var(--radius-pill); font-size: 0.68rem; font-weight: 600;
}

/* EMPTY STATE */
.empty-state { text-align: center; padding: 40px 20px; color: var(--text-muted); }
.empty-state i { font-size: 2.5rem; margin-bottom: 12px; opacity: 0.4; display: block; }

/* Override BS */
.form-check-input:checked { background-color: var(--accent); border-color: var(--accent); }
.alert { border-radius: var(--radius-md); border: none; }
a { color: var(--accent-light); }
a:hover { color: var(--accent); }

/* Goal Progress Bar (#9) */
.goal-progress-bar {
  background: rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-pill);
  height: 8px;
  width: 100%;
  overflow: hidden;
}
.goal-progress-fill {
  background: var(--accent-gradient);
  height: 100%;
  border-radius: var(--radius-pill);
  transition: width 0.4s ease;
}

/* Month Navigation (#3) */
.month-nav {
  display: flex;
  align-items: center;
  gap: 8px;
}
.month-nav-selector {
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Notification Banner (#16) */
.notif-banner {
  background: rgba(245, 158, 11, 0.1);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--warning);
  font-size: 0.85rem;
}
.notif-banner i { font-size: 1.1rem; }

/* Sidebar Notification (#16) */
.sidebar-notif {
  padding: 10px 14px;
  background: rgba(245, 158, 11, 0.08);
  border-radius: var(--radius-md);
  margin: 0 10px 10px;
  font-size: 0.75rem;
  color: var(--warning);
  display: flex;
  align-items: center;
  gap: 8px;
}
.sidebar-notif i { font-size: 1rem; }

/* Onboarding (#14) */
.onboarding-container {
  max-width: 680px;
  margin: 0 auto;
  padding-top: 20px;
}
.onboarding-steps {
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.onboarding-step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.onboarding-step .step-header {
  padding: 14px 18px;
  font-weight: 600;
  font-size: 0.95rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 10px;
}
.onboarding-step .step-number {
  width: 26px;
  height: 26px;
  background: var(--accent-gradient);
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 0.8rem;
  font-weight: 700;
}
.onboarding-step .step-body {
  padding: 18px;
  display: none;
}
.onboarding-step.active .step-body {
  display: block;
}
.onboarding-step.active {
  border-color: var(--accent);
}

/* Inline Editable (#12) */
.inline-editable {
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.inline-editable:hover {
  background: rgba(255, 255, 255, 0.05);
}