/* ==========================================
   LEDGERLY - MINIMALIST FINANCE TRACKER
   Design Philosophy: Clean, Calm, Professional
   Color Palette: #9CC6DB, #FCF6D9, #CF4B00, #DDBA7D
   ========================================== */

/* CSS Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* Screen reader only utility class */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

:root {
    /* Light Theme Colors */
    --color-primary: #9CC6DB;
    --color-primary-light: #c7e3f0;
    --color-primary-dark: #6ba5c4;

    --color-secondary: #FCF6D9;
    --color-secondary-dark: #f5ebb3;

    --color-accent: #CF4B00;
    --color-accent-light: #ff6b1f;
    --color-accent-dark: #a33c00;

    --color-gold: #DDBA7D;
    --color-gold-light: #f0d9a8;
    --color-gold-dark: #c9a563;

    /* Light Theme Variables */
    --bg-primary: #FCF6D9;
    --bg-secondary: #ffffff;
    --bg-card: #ffffff;
    --bg-form: #fefdfb;

    --text-primary: #1a1a1a;
    --text-secondary: #4a4a4a;
    --text-muted: #7a7a7a;

    --accent-income: #2d7a4f;
    --accent-income-bg: #e8f5e9;
    --accent-expense: #CF4B00;
    --accent-expense-bg: #fff4ed;

    --border-color: #e6dcc4;
    --border-color-strong: #DDBA7D;
    --border-radius: 8px;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-bold: 600;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-xxl: 48px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
}

/* Dark Theme Variables */
[data-theme="dark"] {
    --bg-primary: #1a1f2e;
    --bg-secondary: #242938;
    --bg-card: #2a3143;
    --bg-form: #2f3647;

    --text-primary: #f5f5f5;
    --text-secondary: #c5c5c5;
    --text-muted: #8a8a8a;

    --accent-income: #4caf50;
    --accent-income-bg: #1e3a1f;
    --accent-expense: #ff7043;
    --accent-expense-bg: #3d2419;

    --border-color: #3a4254;
    --border-color-strong: #9CC6DB;

    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
}

body {
    font-family: var(--font-primary);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: 15px;
    transition: background-color var(--transition-normal), color var(--transition-normal);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ==========================================
   HEADER
   ========================================== */
.header {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    border-bottom: 3px solid var(--color-gold);
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .header {
    background: linear-gradient(135deg, #2a3143 0%, #1a1f2e 100%);
    border-bottom: 3px solid var(--color-primary);
}

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

.header-text {
    flex: 1;
}

.header-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.app-name {
    font-size: 32px;
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    letter-spacing: -0.5px;
    margin-bottom: var(--spacing-xs);
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.app-subtitle {
    font-size: 15px;
    color: rgba(255, 255, 255, 0.9);
    font-weight: var(--font-weight-normal);
}

/* Icon Buttons */
.btn-icon {
    background-color: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
    font-size: 24px;
    text-decoration: none;
}

.btn-icon:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.btn-icon:active {
    transform: scale(0.95);
}

/* Theme Toggle Button */
.theme-toggle {
    background-color: rgba(255, 255, 255, 0.2);
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-normal);
    backdrop-filter: blur(10px);
}

.theme-toggle:hover {
    background-color: rgba(255, 255, 255, 0.3);
    transform: scale(1.05);
}

.theme-toggle:active {
    transform: scale(0.95);
}

.theme-icon {
    font-size: 24px;
    transition: transform var(--transition-normal);
}

[data-theme="dark"] .theme-icon {
    transform: rotate(180deg);
}

/* ==========================================
   MONTH SELECTOR
   ========================================== */
.month-selector-section {
    margin-bottom: var(--spacing-xl);
}

.month-label {
    display: block;
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.month-input {
    padding: 12px 16px;
    font-size: 15px;
    font-family: var(--font-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.month-input:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-md);
}

.month-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(156, 198, 219, 0.2);
}

/* ==========================================
   SUMMARY CARDS
   ========================================== */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xxl);
}

.summary-card {
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
}

.income-card::before {
    background: linear-gradient(90deg, var(--accent-income), #4caf50);
}

.expense-card::before {
    background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light));
}

.balance-card::before {
    background: linear-gradient(90deg, var(--color-primary), var(--color-gold));
}

.summary-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--border-color-strong);
}

.card-label {
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

.card-value {
    font-size: 28px;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.income-card .card-value {
    color: var(--accent-income);
}

.expense-card .card-value {
    color: var(--accent-expense);
}

.balance-card .card-value.positive {
    color: var(--accent-income);
}

.balance-card .card-value.negative {
    color: var(--accent-expense);
}

/* ==========================================
   TRANSACTION FORM
   ========================================== */
.transaction-form-section {
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-xxl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-normal);
}

.form-header {
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

.form-title {
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.transaction-form.edit-mode .form-title {
    color: var(--color-primary-dark);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-wide {
    grid-column: 1 / -1;
}

.form-label {
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.form-input {
    padding: 12px 16px;
    font-size: 15px;
    font-family: var(--font-primary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-form);
    color: var(--text-primary);
    transition: all var(--transition-fast);
}

.form-input:hover {
    border-color: var(--color-gold);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    background-color: var(--bg-secondary);
    box-shadow: 0 0 0 3px rgba(156, 198, 219, 0.2);
}

.form-input::placeholder {
    color: var(--text-muted);
}

/* Toggle Buttons */
.toggle-group {
    display: flex;
    gap: var(--spacing-sm);
}

.toggle-btn {
    flex: 1;
    padding: 12px 16px;
    font-size: 14px;
    font-family: var(--font-primary);
    font-weight: var(--font-weight-medium);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-form);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.toggle-btn:hover {
    background-color: var(--bg-secondary);
    border-color: var(--color-gold);
    transform: translateY(-2px);
}

.toggle-btn.active[data-type="income"] {
    background: linear-gradient(135deg, var(--accent-income-bg), #e8f5e9);
    border-color: var(--accent-income);
    color: var(--accent-income);
    font-weight: var(--font-weight-bold);
}

[data-theme="dark"] .toggle-btn.active[data-type="income"] {
    background: linear-gradient(135deg, #1e3a1f, #2d4a2e);
}

.toggle-btn.active[data-type="expense"] {
    background: linear-gradient(135deg, var(--accent-expense-bg), #fff4ed);
    border-color: var(--accent-expense);
    color: var(--accent-expense);
    font-weight: var(--font-weight-bold);
}

[data-theme="dark"] .toggle-btn.active[data-type="expense"] {
    background: linear-gradient(135deg, #3d2419, #4d2f1f);
}

/* Form Actions */
.form-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.btn {
    padding: 14px 28px;
    font-size: 15px;
    font-family: var(--font-primary);
    font-weight: var(--font-weight-medium);
    border: none;
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-sm);
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-secondary);
    border: 2px solid var(--border-color);
}

.btn-secondary:hover {
    background-color: var(--bg-form);
    border-color: var(--color-gold);
}

/* ==========================================
   TRANSACTION LIST
   ========================================== */
.transaction-list-section {
    margin-bottom: var(--spacing-xxl);
}

.section-title {
    font-size: 20px;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-sm);
    border-bottom: 3px solid var(--color-gold);
}

/* Filter and Sort Controls Container */
.filter-sort-controls {
    display: flex;
    flex-direction: row;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Filter Controls */
.filter-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.filter-label {
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.filter-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    flex: 1;
}

.filter-btn {
    display: flex;
    align-items: center;
    padding: 10px 20px;
    font-size: 14px;
    font-family: var(--font-primary);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.filter-btn:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .filter-btn:hover {
    background-color: rgba(156, 198, 219, 0.15);
}

.filter-btn.active[data-filter="both"] {
    background: linear-gradient(135deg, var(--color-gold), var(--color-gold-dark));
    color: white;
    border-color: var(--color-gold-dark);
    font-weight: var(--font-weight-bold);
    box-shadow: var(--shadow-md);
}

.filter-btn.active[data-filter="income"] {
    background: linear-gradient(135deg, var(--accent-income), #4caf50);
    color: white;
    border-color: var(--accent-income);
    font-weight: var(--font-weight-bold);
    box-shadow: var(--shadow-md);
}

.filter-btn.active[data-filter="expense"] {
    background: linear-gradient(135deg, var(--accent-expense), var(--accent-expense-light));
    color: black;
    border-color: var(--accent-expense-dark);
    font-weight: var(--font-weight-bold);
    box-shadow: var(--shadow-md);
}

.filter-btn.active:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.filter-text {
    font-size: 14px;
}

/* Sort Controls */
.sort-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
}

.sort-label {
    font-size: 13px;
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.sort-buttons {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    flex: 1;
}

.sort-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    font-size: 14px;
    font-family: var(--font-primary);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.sort-btn:hover {
    background-color: var(--color-primary-light);
    border-color: var(--color-primary);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .sort-btn:hover {
    background-color: rgba(156, 198, 219, 0.15);
}

.sort-btn.active {
    background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
    color: white;
    border-color: var(--color-primary-dark);
    font-weight: var(--font-weight-bold);
    box-shadow: var(--shadow-md);
}

.sort-btn.active:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.sort-text {
    font-size: 14px;
}

.sort-icon {
    font-size: 16px;
    font-weight: bold;
    transition: transform var(--transition-fast);
}

.sort-btn.active .sort-icon {
    animation: sortPulse 0.3s ease;
}

@keyframes sortPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.3); }
}

.table-container {
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.transaction-table {
    width: 100%;
    border-collapse: collapse;
}

.transaction-table thead {
    background: linear-gradient(135deg, var(--color-gold-light), var(--color-gold));
    border-bottom: 2px solid var(--border-color-strong);
}

[data-theme="dark"] .transaction-table thead {
    background: linear-gradient(135deg, #2a3143, #1a1f2e);
}

.transaction-table th {
    padding: 14px 18px;
    text-align: left;
    font-size: 12px;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.8px;
}

[data-theme="light"] .transaction-table th {
    color: #4a4a4a;
}

.transaction-table th:last-child {
    text-align: right;
}

.transaction-table tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.transaction-table tbody tr:last-child {
    border-bottom: none;
}

.transaction-table tbody tr:hover {
    background: linear-gradient(90deg, transparent, rgba(156, 198, 219, 0.1), transparent);
    transform: scale(1.01);
}

.transaction-table td {
    padding: 16px 18px;
    font-size: 15px;
    color: var(--text-primary);
}

.transaction-table td:last-child {
    text-align: right;
}

.transaction-date {
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    white-space: nowrap;
}

.transaction-description {
    color: var(--text-primary);
    font-weight: var(--font-weight-medium);
}

.transaction-amount {
    font-weight: var(--font-weight-bold);
    white-space: nowrap;
    font-size: 16px;
}

.transaction-amount.income {
    color: var(--accent-income);
}

.transaction-amount.expense {
    color: var(--accent-expense);
}

.transaction-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

.action-btn {
    padding: 8px 12px;
    font-size: 16px;
    border: none;
    background-color: transparent;
    cursor: pointer;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.action-btn:hover {
    background-color: var(--color-primary-light);
    transform: scale(1.2);
}

[data-theme="dark"] .action-btn:hover {
    background-color: rgba(156, 198, 219, 0.2);
}

.action-btn.delete:hover {
    background-color: var(--accent-expense-bg);
}

/* Empty State */
.empty-state {
    padding: var(--spacing-xxl) var(--spacing-lg);
    text-align: center;
    display: none;
}

.empty-state.visible {
    display: block;
}

.empty-message {
    font-size: 18px;
    color: var(--text-secondary);
    font-weight: var(--font-weight-medium);
    margin-bottom: var(--spacing-sm);
}

.empty-submessage {
    font-size: 14px;
    color: var(--text-muted);
}

/* ==========================================
   LOADING OVERLAY
   ========================================== */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.7);
    display: none;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    z-index: 9999;
    backdrop-filter: blur(4px);
}

.loading-overlay.active {
    display: flex;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid rgba(156, 198, 219, 0.3);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading-text {
    color: white;
    font-size: 16px;
    font-weight: var(--font-weight-medium);
    margin-top: var(--spacing-lg);
}

/* ==========================================
   RESPONSIVE DESIGN
   ========================================== */
@media (max-width: 1024px) {
    .container {
        max-width: 100%;
    }

    .summary-cards {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-md);
    }

    .header {
        padding: var(--spacing-lg) 0;
    }

    .app-name {
        font-size: 26px;
    }

    .app-subtitle {
        font-size: 13px;
    }

    .theme-toggle {
        width: 42px;
        height: 42px;
    }

    .theme-icon {
        font-size: 20px;
    }

    .summary-cards {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .transaction-form-section {
        padding: var(--spacing-lg);
    }

    .form-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .form-group-wide {
        grid-column: 1;
    }

    .form-actions {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    /* Sort Controls - Mobile */
    .sort-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .sort-buttons {
        width: 100%;
    }

    .sort-btn {
        flex: 1;
        justify-content: center;
    }

    /* Filter Controls - Mobile */
    .filter-controls {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--spacing-sm);
    }

    .filter-buttons {
        width: 100%;
    }

    .filter-btn {
        flex: 1;
        justify-content: center;
    }

    .transaction-table {
        font-size: 14px;
    }

    .transaction-table th,
    .transaction-table td {
        padding: 12px 14px;
    }

    .card-value {
        font-size: 24px;
    }
}

@media (max-width: 480px) {
    .app-name {
        font-size: 22px;
    }

    .header-content {
        gap: var(--spacing-md);
    }

    .theme-toggle {
        width: 38px;
        height: 38px;
    }

    .theme-icon {
        font-size: 18px;
    }

    .transaction-table th:nth-child(1),
    .transaction-table td:nth-child(1) {
        display: none;
    }

    .action-btn {
        padding: 6px 10px;
        font-size: 14px;
    }

    .card-value {
        font-size: 22px;
    }

    .summary-cards {
        gap: var(--spacing-sm);
    }
}

/* ==========================================
   ANIMATIONS & TRANSITIONS
   ========================================== */
.fade-in {
    animation: fadeIn 0.4s ease-in;
}

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

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Loading States */
@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

/* Print Styles */
@media print {
    .theme-toggle,
    .transaction-form-section,
    .action-btn {
        display: none;
    }

    body {
        background: white;
        color: black;
    }

    .summary-card,
    .table-container {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 100%);
    border-top: 3px solid var(--color-gold);
    padding: var(--spacing-xl) 0;
    margin-top: var(--spacing-xxl);
    box-shadow: var(--shadow-md);
}

[data-theme="dark"] .footer {
    background: linear-gradient(135deg, #1a1f2e 0%, #2a3143 100%);
    border-top: 3px solid var(--color-primary);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-text {
    font-size: 14px;
    color: rgba(255, 255, 255, 0.85);
    font-weight: var(--font-weight-normal);
}

.footer-name {
    font-weight: var(--font-weight-bold);
    color: #ffffff;
    background: linear-gradient(90deg, var(--color-gold-light), var(--color-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-size: 15px;
}

[data-theme="dark"] .footer-name {
    background: linear-gradient(90deg, var(--color-primary-light), var(--color-gold-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.footer-year {
    font-size: 13px;
    color: rgba(255, 255, 255, 0.7);
    font-weight: var(--font-weight-medium);
}

@media (max-width: 480px) {
    .footer {
        padding: var(--spacing-lg) 0;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-sm);
    }

    .footer-text {
        font-size: 13px;
    }

    .footer-name {
        font-size: 14px;
    }
}

/* ==========================================
   TOKEN SETTINGS MODAL
   ========================================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.75);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 10000;
    backdrop-filter: blur(8px);
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-content {
    background-color: var(--bg-card);
    border-radius: var(--border-radius);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-xl);
    border-bottom: 2px solid var(--border-color);
}

.modal-header h2 {
    font-size: 24px;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin: 0;
}

.modal-close {
    background: none;
    border: none;
    font-size: 32px;
    line-height: 1;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: all var(--transition-fast);
}

.modal-close:hover {
    background-color: var(--accent-expense-bg);
    color: var(--accent-expense);
    transform: rotate(90deg);
}

.modal-body {
    padding: var(--spacing-xl);
}

.token-status {
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--bg-form), var(--bg-secondary));
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
}

.status-indicator {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.status-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background-color: var(--text-muted);
    animation: pulse 2s infinite;
}

.status-dot.valid {
    background-color: var(--accent-income);
    animation: none;
}

.status-dot.invalid {
    background-color: var(--accent-expense);
    animation: none;
}

.status-text {
    font-size: 15px;
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.token-info {
    margin-bottom: var(--spacing-xl);
}

.token-info h3 {
    font-size: 16px;
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.token-display {
    display: flex;
    gap: var(--spacing-sm);
}

#token-display-input {
    flex: 1;
    padding: 12px 16px;
    font-size: 14px;
    font-family: 'Courier New', monospace;
    border: 2px solid var(--border-color);
    border-radius: var(--border-radius);
    background-color: var(--bg-form);
    color: var(--text-primary);
}

#toggle-token-visibility {
    padding: 12px 16px;
    font-size: 14px;
    white-space: nowrap;
}

.token-actions {
    display: flex;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
}

.token-actions .btn {
    flex: 1;
    min-width: 150px;
}

.btn-danger {
    background: linear-gradient(135deg, var(--accent-expense), var(--accent-expense-light));
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, var(--accent-expense-dark), var(--accent-expense));
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.token-help {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, var(--accent-income-bg), var(--bg-secondary));
    border: 2px solid var(--accent-income);
    border-radius: var(--border-radius);
}

[data-theme="dark"] .token-help {
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1), var(--bg-secondary));
}

.token-help h3 {
    font-size: 16px;
    font-weight: var(--font-weight-bold);
    color: var(--accent-income);
    margin-bottom: var(--spacing-md);
}

.token-help ol {
    margin-left: var(--spacing-lg);
    color: var(--text-primary);
}

.token-help li {
    margin-bottom: var(--spacing-sm);
    font-size: 14px;
    line-height: 1.6;
}

.token-help code {
    background-color: var(--bg-form);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    color: var(--color-primary-dark);
    border: 1px solid var(--border-color);
}

.token-help a {
    color: var(--color-primary-dark);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    border-bottom: 2px solid var(--color-primary);
    transition: all var(--transition-fast);
}

.token-help a:hover {
    color: var(--color-primary);
    border-bottom-color: var(--color-gold);
}

@media (max-width: 768px) {
    .modal-content {
        max-height: 95vh;
    }

    .modal-header {
        padding: var(--spacing-lg);
    }

    .modal-body {
        padding: var(--spacing-lg);
    }

    .token-actions {
        flex-direction: column;
    }

    .token-actions .btn {
        width: 100%;
        min-width: unset;
    }

    .token-display {
        flex-direction: column;
    }

    #toggle-token-visibility {
        width: 100%;
    }
}