/* ==========================================
   DESIGN SYSTEM & VARIABLES (styles.css)
   ========================================== */

:root {
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  
  /* Color Palettes */
  --color-primary: #3b82f6;
  --color-primary-rgb: 59, 130, 246;
  --color-primary-hover: #2563eb;
  
  --color-success: #10b981;
  --color-success-rgb: 16, 185, 129;
  --color-success-hover: #059669;
  
  --color-warning: #f59e0b;
  --color-warning-rgb: 245, 158, 11;
  --color-warning-hover: #d97706;
  
  --color-danger: #ef4444;
  --color-danger-rgb: 239, 68, 68;
  --color-danger-hover: #dc2626;

  --color-info: #8b5cf6;
  
  --border-radius-sm: 8px;
  --border-radius-md: 12px;
  --border-radius-lg: 20px;
  --border-radius-full: 9999px;
  
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Theme (Default) */
[data-theme="dark"] {
  --bg-primary: #0a0e17;
  --bg-secondary: #121824;
  --bg-tertiary: #1b2336;
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --border-color: rgba(255, 255, 255, 0.06);
  --border-hover: rgba(255, 255, 255, 0.12);
  
  --glass-bg: rgba(18, 24, 36, 0.85);
  --glass-border: rgba(255, 255, 255, 0.05);
  --glass-blur: 16px;
  
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 8px 32px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 16px 48px rgba(0, 0, 0, 0.5);
  
  --color-background-primary: #121824;
  --color-background-secondary: #1b2336;
  
  --color-background-info: rgba(139, 92, 246, 0.08);
  --color-text-info: #a78bfa;
  
  --color-background-success: rgba(16, 185, 129, 0.08);
  --color-text-success: #34d399;
  
  --color-background-warning: rgba(245, 158, 11, 0.08);
  --color-text-warning: #fbbf24;
  
  --color-background-danger: rgba(239, 68, 68, 0.08);
  --color-text-danger: #f87171;
  
  --color-border-secondary: rgba(255, 255, 255, 0.08);
  --color-border-tertiary: rgba(255, 255, 255, 0.05);
  
  --scrollbar-thumb: #1e293b;
  --scrollbar-track: #0a0e17;
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --border-color: rgba(0, 0, 0, 0.06);
  --border-hover: rgba(0, 0, 0, 0.12);
  
  --glass-bg: rgba(255, 255, 255, 0.85);
  --glass-border: rgba(0, 0, 0, 0.05);
  --glass-blur: 16px;
  
  --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
  --shadow-md: 0 8px 32px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 16px 48px rgba(15, 23, 42, 0.1);
  
  --color-background-primary: #ffffff;
  --color-background-secondary: #f8fafc;
  
  --color-background-info: rgba(139, 92, 246, 0.06);
  --color-text-info: #7c3aed;
  
  --color-background-success: rgba(16, 185, 129, 0.06);
  --color-text-success: #059669;
  
  --color-background-warning: rgba(245, 158, 11, 0.06);
  --color-text-warning: #d97706;
  
  --color-background-danger: rgba(239, 68, 68, 0.06);
  --color-text-danger: #dc2626;
  
  --color-border-secondary: rgba(15, 23, 42, 0.08);
  --color-border-tertiary: rgba(15, 23, 42, 0.04);
  
  --scrollbar-thumb: #cbd5e1;
  --scrollbar-track: #f8fafc;
}

/* ==========================================
   RESET & BASE STYLES
   ========================================== */

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  min-height: 100vh;
  overflow-x: hidden;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
}

::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-primary);
}

/* ==========================================
   LAYOUT STRUCTURE
   ========================================== */

.app-container {
  display: flex;
  min-height: 100vh;
  position: relative;
}

/* Sidebar Navigation */
.app-sidebar {
  width: 280px;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 24px;
  display: flex;
  flex-direction: column;
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  z-index: 100;
  transition: transform var(--transition-normal), background-color var(--transition-normal), border-color var(--transition-normal);
}

.sidebar-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

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

.logo-icon {
  width: 28px;
  height: 28px;
  color: var(--color-primary);
  filter: drop-shadow(0 2px 8px rgba(59, 130, 246, 0.4));
}

.logo-text {
  font-size: 19px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.logo-text .highlight {
  color: var(--color-primary);
  font-weight: 700;
}

.close-sidebar-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-secondary);
  cursor: pointer;
}

.close-sidebar-btn svg {
  width: 24px;
  height: 24px;
}

/* Sidebar Navigation Links */
.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 8px;
  flex-grow: 1;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 14px 16px;
  border-radius: var(--border-radius-md);
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 14px;
  transition: all var(--transition-fast);
  border: none;
  background: transparent;
  width: 100%;
  text-align: left;
  cursor: pointer;
}

.nav-icon {
  width: 18px;
  height: 18px;
  color: var(--text-muted);
  transition: color var(--transition-fast);
}

.nav-item:hover {
  background-color: var(--bg-tertiary);
  color: var(--text-primary);
}

.nav-item:hover .nav-icon {
  color: var(--color-primary);
}

.nav-item.active {
  background: linear-gradient(90deg, rgba(59, 130, 246, 0.1) 0%, rgba(59, 130, 246, 0.02) 100%);
  border-left: 4px solid var(--color-primary);
  padding-left: 12px;
  color: var(--color-primary);
}

.nav-item.active .nav-icon {
  color: var(--color-primary);
}

/* Sidebar Footer / Theme Toggle */
.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
}

.theme-toggle-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 12px;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  color: var(--text-primary);
  font-family: inherit;
  font-weight: 600;
  font-size: 13px;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
  background-color: var(--border-color);
  border-color: var(--border-hover);
}

.theme-toggle-btn svg {
  width: 16px;
  height: 16px;
  color: var(--color-primary);
}

/* Toggle Light/Dark icons based on theme */
[data-theme="dark"] .theme-icon-light { display: none; }
[data-theme="light"] .theme-icon-dark { display: none; }

/* Main Content Layout */
.app-main {
  flex-grow: 1;
  margin-left: 280px;
  padding: 40px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-left var(--transition-normal);
}

/* Top Header */
.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--border-color);
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  cursor: pointer;
}

.mobile-menu-btn svg {
  width: 24px;
  height: 24px;
}

.header-title-wrapper {
  display: flex;
  flex-direction: column;
}

.header-title {
  font-size: 24px;
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--text-primary);
}

.header-subtitle {
  font-size: 13px;
  color: var(--text-muted);
  font-weight: 500;
  margin-top: 4px;
}

/* ==========================================
   COMPONENTS & GRIDS
   ========================================== */

.app-content {
  flex-grow: 1;
}

.panel {
  display: none;
  animation: fadeIn var(--transition-normal);
}

.panel.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

.grid2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.grid3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 24px;
}

.grid4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-bottom: 24px;
}

.card {
  background: var(--color-background-primary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
  margin-bottom: 24px;
}

.card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.section-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--color-border-tertiary);
  padding-bottom: 8px;
}

/* Metric Cards */
.metric-card {
  background: var(--color-background-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-md);
  padding: 20px;
  transition: all var(--transition-fast);
  display: flex;
  flex-direction: column;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.metric-card:hover {
  transform: translateY(-2px);
  border-color: rgba(59, 130, 246, 0.2);
}

.metric-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.metric-value {
  font-size: 24px;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.metric-sub {
  font-size: 11px;
  color: var(--text-muted);
  margin-top: 4px;
  font-weight: 500;
}

/* ==========================================
   INPUTS & ROWS STYLING
   ========================================== */

.row {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 12px;
  padding: 10px 14px;
  background-color: var(--bg-tertiary);
  border-radius: var(--border-radius-md);
  border: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.row:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.12);
}

.row label {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-secondary);
  flex: 1;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.row label svg, .row label i {
  color: var(--color-primary);
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.row input[type="number"],
.row input[type="text"] {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: inherit;
  font-size: 14px;
  font-weight: 600;
  outline: none;
}

.row input[type="number"] {
  width: 110px;
  text-align: right;
  font-weight: 700;
  font-size: 15px;
}

.row input[type="text"] {
  flex: 1;
}

/* Tags and Badges */
.tag {
  font-size: 11px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.25px;
}

.tag-fixed {
  background: var(--color-background-info);
  color: var(--color-text-info);
}

.tag-var {
  background: var(--color-background-warning);
  color: var(--color-text-warning);
}

.tag-saving {
  background: var(--color-background-success);
  color: var(--color-text-success);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-weight: 700;
}

/* ==========================================
   BUTTONS
   ========================================== */

.add-btn {
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  color: var(--text-secondary);
  cursor: pointer;
  background: transparent;
  border: 1.5px dashed var(--color-border-secondary);
  border-radius: var(--border-radius-md);
  padding: 10px 16px;
  width: 100%;
  margin-top: 8px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all var(--transition-fast);
}

.add-btn:hover {
  background: var(--bg-tertiary);
  border-color: var(--color-primary);
  color: var(--text-primary);
}

.del-btn {
  font-size: 20px;
  color: var(--text-muted);
  cursor: pointer;
  background: none;
  border: none;
  padding: 0 6px;
  display: inline-flex;
  align-items: center;
  transition: color var(--transition-fast);
  line-height: 1;
}

.del-btn:hover {
  color: var(--color-danger);
}

/* ==========================================
   BAR PROGRESS STYLING
   ========================================== */

.bar-wrap {
  background: var(--bg-tertiary);
  border-radius: var(--border-radius-full);
  height: 8px;
  overflow: hidden;
  margin-top: 6px;
  width: 100%;
  border: 1px solid var(--border-color);
}

.bar-fill {
  height: 100%;
  border-radius: var(--border-radius-full);
  transition: width 0.5s cubic-bezier(0.1, 0.8, 0.3, 1), background-color 0.3s;
  width: 0%;
}

.bar-ok { background-color: var(--color-success); }
.bar-warn { background-color: var(--color-warning); }
.bar-over { background-color: var(--color-danger); }

/* ==========================================
   SUMMARY ROW & RESULTS
   ========================================== */

.summary-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-tertiary);
  font-size: 14px;
  font-weight: 500;
}

.summary-row:last-child {
  border-bottom: none;
}

.summary-row .lbl {
  color: var(--text-secondary);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.summary-row .val {
  font-weight: 750;
  color: var(--text-primary);
  font-size: 15px;
}

.val-ok { color: var(--color-success); }
.val-warn { color: var(--color-warning); }
.val-bad { color: var(--color-danger); }

/* Box Alerts and advice cards */
.info-box, .danger-box, .success-box {
  border-radius: var(--border-radius-md);
  padding: 14px 18px;
  font-size: 13px;
  line-height: 1.5;
  margin-bottom: 20px;
  font-weight: 500;
  border-left: 4px solid transparent;
}

.info-box {
  background: var(--color-background-info);
  border-left-color: var(--color-info);
  color: var(--text-primary);
}

.danger-box {
  background: var(--color-background-danger);
  border-left-color: var(--color-danger);
  color: var(--text-primary);
}

.success-box {
  background: var(--color-background-success);
  border-left-color: var(--color-success);
  color: var(--text-primary);
}

/* ==========================================
   INVESTMENTS & PROJECTS
   ========================================== */

.invest-track {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.invest-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 8px 0;
  border-bottom: 1px solid var(--color-border-tertiary);
}

.invest-row:last-child {
  border-bottom: none;
}

.invest-row .name {
  font-size: 14px;
  font-weight: 600;
  color: var(--text-primary);
  flex: 1;
}

.invest-row .amount {
  font-size: 14px;
  font-weight: 750;
  min-width: 80px;
  text-align: right;
}

.invest-row .pct {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 700;
  min-width: 40px;
  text-align: right;
}

.saving-goal {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 0;
  border-bottom: 1px solid var(--color-border-tertiary);
}

.saving-goal:last-child {
  border-bottom: none;
}

/* ==========================================
   TOAST SYSTEM (NOTIFICATIONS)
   ========================================== */

.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 2000;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.toast {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border: 1px solid var(--border-color);
  border-left: 5px solid var(--color-primary);
  border-radius: var(--border-radius-md);
  padding: 14px 20px;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: var(--shadow-md);
  transform: translateX(120%);
  animation: slideInToast 0.35s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
  max-width: 340px;
}

@keyframes slideInToast {
  to { transform: translateX(0); }
}

.toast-success { border-left-color: var(--color-success); }
.toast-error { border-left-color: var(--color-danger); }

.toast-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}

.toast-success .toast-icon { color: var(--color-success); }
.toast-error .toast-icon { color: var(--color-danger); }

.toast-message {
  font-size: 13px;
  font-weight: 600;
  line-height: 1.4;
}

/* Utility classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ==========================================
   RESPONSIVE DESIGN (MEDIA QUERIES)
   ========================================== */

@media (max-width: 1100px) {
  .grid4 {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 900px) {
  .grid3 {
    grid-template-columns: repeat(1, 1fr);
  }
  
  .grid2 {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .app-sidebar {
    transform: translateX(-100%);
    box-shadow: var(--shadow-lg);
  }
  
  .app-sidebar.sidebar-open {
    transform: translateX(0);
  }
  
  .close-sidebar-btn {
    display: block;
  }
  
  .app-main {
    margin-left: 0;
    padding: 24px;
  }
  
  .mobile-menu-btn {
    display: block;
  }
}

@media (max-width: 500px) {
  .grid4 {
    grid-template-columns: 1fr;
  }
  
  .row {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }
  
  .row input[type="number"] {
    width: 100%;
    text-align: left;
  }
}