/* 
  Personal Finance "Ultra SaaS" - Global Design System 
*/

:root {
  /* --- Static Design Tokens --- */
  --accent-secondary: #ec4899;
  --accent-success: #10b981;
  --accent-danger: #ef4444;
  --accent-warning: #f59e0b;
  --glass-blur: blur(16px);
  --font-main: 'Inter', system-ui, -apple-system, sans-serif;
  --fs-h1: clamp(1.5rem, 5vw, 2.8rem);
  --fs-h2: clamp(1.2rem, 4vw, 2rem);
  --fs-body: clamp(0.875rem, 2vw, 1.1rem);
  --sidebar-w: 260px;
  --header-h: 70px;
  --radius-xl: 32px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --transition-smooth: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

/* --- Theme Variants --- */
:root, [data-theme="dark"] {
  --bg-primary: #0a0c12;
  --bg-secondary: rgba(255, 255, 255, 0.05);
  --text-main: #f8fafc;
  --text-muted: #94a3b8;
  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.5);
  --accent-primary: #6366f1;
}

[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: rgba(0, 0, 0, 0.05);
  --text-main: #0f172a;
  --text-muted: #475569;
  --glass-bg: rgba(255, 255, 255, 0.8);
  --glass-border: rgba(0, 0, 0, 0.08);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.1);
  --accent-primary: #4f46e5;
}

[data-theme="deep-blue"] {
  --bg-primary: #020617;
  --bg-secondary: rgba(56, 189, 248, 0.1);
  --accent-primary: #38bdf8;
  --text-main: #f1f5f9;
  --glass-bg: rgba(15, 23, 42, 0.7);
  --glass-border: rgba(56, 189, 248, 0.2);
}

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

body {
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-main);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
  transition: background 0.5s ease;
}

/* --- Utilities --- */
.glass-panel {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  box-shadow: var(--glass-shadow);
  border-radius: var(--radius-lg);
}

.glass-card {
  background: var(--glass-bg);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  padding: 1.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition-smooth);
}

.glass-card:hover {
  transform: translateY(-5px);
  border-color: var(--accent-primary);
  box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* --- Incognito Mode --- */
.incognito-mode .amount {
    filter: blur(8px) !important;
    user-select: none;
    pointer-events: none;
    transition: filter 0.3s ease;
}

.incognito-mode #lock-app {
    display: none !important;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* --- Main Layout --- */
.app-container {
  display: flex;
  min-height: 100vh;
  width: 100%;
  overflow-x: hidden;
}

.sidebar {
  width: var(--sidebar-w);
  height: 100vh;
  position: fixed;
  left: 0;
  top: 0;
  z-index: 100;
  padding: 2.5rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
  transition: var(--transition-smooth);
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--accent-primary);
}

.nav-links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
  transition: var(--transition-smooth);
}

.nav-item.active, .nav-item:hover {
  background: var(--accent-primary);
  color: white;
  box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.main-content {
  flex: 1;
  min-width: 0; /* Prevents flex child from blowing out */
  max-width: 100%;
  margin-left: var(--sidebar-w);
  padding: 2rem 3rem;
  transition: var(--transition-smooth);
  overflow-x: hidden;
}

.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 3rem;
}

/* --- Buttons --- */
.btn {
  border: none;
  background: none;
  font-family: inherit;
  font-size: 1rem;
  cursor: pointer;
  outline: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  transition: var(--transition-smooth);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary)) !important;
  color: white !important;
  padding: 0.8rem 1.8rem !important;
  border-radius: var(--radius-md) !important;
  font-weight: 700 !important;
  box-shadow: 0 8px 24px rgba(99, 102, 241, 0.4) !important;
  border: none !important;
}

    /* Added utility class for full width elements */
    .full-width {
        width: 100% !important;
        margin-top: 1rem;
    }

.btn-icon {
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  color: var(--text-main);
  padding: 0.5rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-icon:hover {
  background: var(--accent-primary);
  color: white;
}

.settings-group {
  margin-top: auto;
  display: flex;
  gap: 0.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--glass-border);
}

.user-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.avatar {
  width: 40px;
  height: 40px;
  background: var(--accent-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
}

.user-status {
  font-size: 0.75rem;
  color: var(--accent-primary);
  font-weight: 700;
}

/* --- Shared Components --- */

/* FAB (Mobile) */
.btn-fab {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
  color: white;
  width: 64px;
  height: 64px;
  border-radius: 20px;
  border: 4px solid var(--bg-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-top: -45px;
  box-shadow: 0 8px 20px rgba(99, 102, 241, 0.5);
  transition: var(--transition-smooth);
  z-index: 1001;
}

/* Bottom Nav (Mobile) */
.bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 80px;
  z-index: 1000;
  justify-content: space-around;
  align-items: center;
  padding: 0 1rem 15px 1rem;
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border-top: 1px solid var(--glass-border);
}

/* Inputs & Forms */
.glass-input {
  width: 100%;
  padding: 0.85rem 1.25rem;
  background: var(--bg-secondary);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-family: inherit;
  font-size: 1rem;
  outline: none;
  transition: var(--transition-smooth);
}

.glass-input option {
    background-color: var(--bg-primary);
    color: var(--text-main);
}

.form-group { margin-bottom: 1.5rem; }
.form-group label { display: block; margin-bottom: 0.5rem; font-weight: 600; color: var(--text-muted); }

.form-row { display: flex; gap: 1rem; align-items: flex-start; }
.form-row .form-group { flex: 1; margin-bottom: 1.5rem; }
@media (max-width: 600px) {
    .form-row { flex-direction: column; gap: 0; }
    .form-row .form-group { margin-bottom: 1rem; width: 100%; }
}

/* Modal System */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(5px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.modal-overlay.active { display: flex; opacity: 1; }
.modal-content {
  width: 95%;
  max-width: 560px;
  padding: 0; /* Header handles padding */
  overflow: hidden;
  animation: modal-in 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
    padding: 1.5rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 1.5rem;
}

.modal-header h2 { font-size: 1.4rem; margin: 0; }

#transaction-form { padding: 0 2rem 2rem 2rem; }

/* Type Selector Styled */
.type-selector {
    display: flex;
    gap: 0.75rem;
    background: var(--bg-secondary);
    padding: 0.4rem;
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
}

.type-btn {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.75rem;
    border-radius: 12px;
    font-weight: 700;
    color: var(--text-muted);
    cursor: pointer;
    transition: var(--transition-smooth);
}

.type-btn.active.income {
    background: var(--accent-success);
    color: white;
    box-shadow: 0 4px 12px rgba(16, 185, 129, 0.3);
}

.type-btn.active.expense {
    background: var(--accent-danger);
    color: white;
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

@keyframes modal-in {
  from { transform: translateY(50px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

/* Typography Utilities */
h1 { font-size: var(--fs-h1); font-weight: 800; margin-bottom: 0.25rem; }
h2 { font-size: var(--fs-h2); font-weight: 700; }
h3 { font-size: 1.1rem; font-weight: 700; color: var(--text-main); }
.text-muted { color: var(--text-muted); font-size: 0.9rem; }

/* Responsive */
@media (max-width: 1024px) {
  :root { --sidebar-w: 80px; }
  .sidebar span, .sidebar .logo-text, .sidebar .user-info { display: none; }
  .sidebar { align-items: center; }
  .nav-item { justify-content: center; padding: 1rem; }
  .settings-group { flex-direction: column; align-items: center; }
}

@media (max-width: 768px) {
  .sidebar { transform: translateX(-100%); }
  .main-content { margin-left: 0; padding: 1.5rem; padding-bottom: calc(7rem + env(safe-area-inset-bottom)); }
  .bottom-nav { 
    display: flex;
    padding-bottom: calc(0.5rem + env(safe-area-inset-bottom));
    height: auto;
    min-height: 80px;
  }
  .header { 
    flex-direction: row; 
    align-items: center; 
    justify-content: space-between; 
    gap: 1rem; 
  }
  .header-info h1 { font-size: 1.5rem; }
  .header-info p { font-size: 0.8rem; }
  
  .chart-container canvas { min-height: 250px !important; }
  #add-transaction-desktop { display: none !important; }
  .mobile-avatar-btn { display: flex !important; }
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* File Upload UI */
.file-upload-wrapper {
  position: relative;
  width: 100%;
  height: 60px;
}

.file-input {
  position: absolute;
  width: 100%;
  height: 100%;
  opacity: 0;
  cursor: pointer;
  z-index: 2;
}

.file-dummy {
  position: absolute;
  top: 0; left: 0; width: 100%; height: 100%;
  background: var(--bg-secondary);
  border: 1.5px dashed var(--glass-border);
  border-radius: var(--radius-md);
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--text-muted);
  font-weight: 500;
  gap: 0.5rem;
  transition: var(--transition-smooth);
  z-index: 1;
}

.file-input:hover + .file-dummy,
.file-input:focus + .file-dummy {
  border-color: var(--accent-primary);
  color: var(--text-main);
  background: rgba(99, 102, 241, 0.05);
}

.voucher-preview-container {
  margin-top: 1rem;
  position: relative;
  display: inline-block;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--glass-border);
}

.voucher-preview-container img {
  display: block;
  max-width: 100%;
  max-height: 150px;
  object-fit: cover;
}

.remove-voucher {
  position: absolute;
  top: 0.25rem;
  right: 0.25rem;
  background: rgba(0,0,0,0.6);
  backdrop-filter: blur(4px);
  color: white;
  width: 24px;
  height: 24px;
  border: none;
  border-radius: 50%;
  padding: 4px;
}

.remove-voucher:hover {
  background: var(--accent-danger);
}

/* --- Auth & Lock Screens --- */
.auth-overlay {
    background: var(--bg-primary);
    background-image: radial-gradient(circle at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
                      radial-gradient(circle at 80% 80%, rgba(236, 72, 153, 0.1) 0%, transparent 40%);
    z-index: 5000;
    backdrop-filter: blur(25px);
}

.login-card {
    width: 90%;
    max-width: 420px;
    padding: 3rem 2rem;
    text-align: center;
}

.login-header { margin-bottom: 2.5rem; }
.login-header .logo { justify-content: center; font-size: 2rem; margin-bottom: 1rem; }
.login-header h2 { font-size: 1.8rem; letter-spacing: -0.5px; }

.auth-tabs {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
    background: var(--bg-secondary);
    padding: 0.4rem;
    border-radius: var(--radius-md);
}

.auth-tab {
    flex: 1;
    border: none;
    background: transparent;
    padding: 0.6rem;
    border-radius: 12px;
    color: var(--text-muted);
    font-weight: 700;
    cursor: pointer;
    transition: var(--transition-smooth);
}

.auth-tab.active {
    background: var(--accent-primary);
    color: white;
}

/* Hide biometrics tab on desktop - only show on mobile */
@media (min-width: 769px) {
    .auth-tab[data-target="login-form-bio"] {
        display: none;
    }
}

.auth-form { display: none; }
.auth-form.active { display: block; animation: fadeIn 0.4s ease; }

.pin-display, .pin-display-lock {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.pin-dot {
    width: 16px;
    height: 16px;
    border: 2px solid var(--glass-border);
    border-radius: 50%;
    transition: var(--transition-smooth);
}

.pin-dot.filled {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    box-shadow: 0 0 15px var(--accent-primary);
    transform: scale(1.2);
}

.keypad-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
    max-width: 280px;
    margin: 0 auto;
}

.key-btn {
    width: 70px;
    height: 70px;
    border-radius: 50%;
    border: 1px solid var(--glass-border);
    background: var(--glass-bg);
    color: var(--text-main);
    font-size: 1.5rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    display: flex;
    align-items: center;
    justify-content: center;
}

.key-btn:hover {
    background: var(--accent-primary);
    color: white;
    transform: scale(1.1);
}

.key-btn.empty { border: none; background: transparent; cursor: default; }
.key-btn.backspace { border-color: transparent; color: var(--text-muted); }

.bio-icon-wrapper {
    margin: 2rem auto;
    width: 100px;
    height: 100px;
    background: var(--bg-secondary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
}

.bio-icon-wrapper i { width: 50px; height: 50px; color: var(--accent-primary); }

.bio-pulse::after {
    content: '';
    position: absolute;
    width: 100%; height: 100%;
    border: 2px solid var(--accent-primary);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    100% { transform: scale(1.5); opacity: 0; }
}

.lock-overlay {
    backdrop-filter: blur(40px);
    background: rgba(10, 12, 18, 0.85);
}

.lock-card { text-align: center; width: 100%; }

.btn-text {
    background: none;
    border: none;
    color: var(--text-muted);
    font-weight: 600;
    margin-top: 2rem;
    cursor: pointer;
    transition: var(--transition-smooth);
}

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

/* --- Achievements / Badges --- */
.achievement-notify {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--glass-bg);
    border: 1px solid var(--accent-primary);
    padding: 1rem 2rem;
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 6000;
    transition: transform 0.6s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    backdrop-filter: blur(15px);
}

.achievement-notify.active { transform: translateX(-50%) translateY(0); }

.badge-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #fcd34d, #f59e0b);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.4);
}

/* --- Profile Achievements Grid --- */
.achievements-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.achievement-card {
    position: relative;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    text-align: center;
    transition: var(--transition-smooth);
    overflow: hidden;
}

.achievement-card.earned {
    border-color: var(--accent-primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), transparent);
}

.achievement-card.locked {
    opacity: 0.6;
    filter: grayscale(1);
}

.ach-icon {
    width: 60px;
    height: 60px;
    background: var(--bg-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem auto;
    border: 2px solid var(--glass-border);
    color: var(--accent-primary);
    transition: var(--transition-smooth);
}

.earned .ach-icon {
    background: var(--accent-primary);
    color: white;
    border-color: transparent;
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

.ach-title { font-weight: 700; margin-bottom: 0.25rem; }
.ach-desc { font-size: 0.8rem; color: var(--text-muted); }

.lock-overlay-icon {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    width: 16px;
    height: 16px;
    color: var(--text-muted);
}

.achievement-card:hover:not(.locked) {
    transform: translateY(-5px) scale(1.02);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-10px); }
    75% { transform: translateX(10px); }
}

/* Notification Container */
#notification-center {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    pointer-events: none;
}