:root {
    --bg-color: #ffffff;
    /* Pure white */
    --panel-bg: #ffffff;
    --panel-border: #e5e7eb;
    /* Light gray border */
    --panel-bg-hover: #f9fafb;

    --text-primary: #111827;
    /* Near black */
    --text-secondary: #4b5563;
    /* Dark gray */
    --text-muted: #9ca3af;

    --accent-primary: #000000;
    /* Pure black accent */
    --accent-primary-hover: #374151;
    --accent-text: #ffffff;
    /* White text on black background */

    --income-color: #10b981;
    /* Emerald (Important) */
    --income-bg: rgba(16, 185, 129, 0.15);

    --expense-color: #ef4444;
    /* Red (Important) */
    --expense-bg: rgba(239, 68, 68, 0.15);

    --balance-color: #3b82f6;
    /* Blue (Important) */
    --balance-bg: rgba(59, 130, 246, 0.15);

    --radius-lg: 20px;
    --radius-md: 12px;
    --radius-sm: 8px;

    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Google Sans', sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
}

/* Layout */
.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

.top-dock {
    position: sticky;
    top: 20px;
    width: 90%;
    max-width: 1000px;
    margin: 0 auto 2rem auto;
    background: rgba(255, 255, 255, 0.85);
    backdrop-filter: blur(12px);
    border: 1px solid var(--panel-border);
    border-radius: 40px;
    padding: 0.5rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.05);
}

/* Hide sidebar on small screens, show mobile nav */
.mobile-nav {
    display: none;
}

@media (max-width: 900px) {
    .top-dock {
        top: 0;
        width: 100%;
        max-width: 100%;
        border-radius: 0;
        margin: 0 0 1rem 0;
        border-right: none;
        border-left: none;
        border-top: none;
        padding: 0.5rem 1rem;
    }

    .logo {
        display: none;
    }

    .dock-links {
        display: none !important;
    }

    .app-container {
        padding-bottom: 70px;
        /* Space for bottom nav */
    }

    .status-btn {
        font-size: 0.7rem;
        padding: 6px 10px;
    }

    .mobile-only-title {
        display: none !important;
    }

    .user-controls {
        gap: 8px;
        min-width: 0;
    }

    .m-nav-item {
        font-size: 0.7rem;
    }

    .m-nav-item i {
        font-size: 1.3rem;
    }

    .main-content {
        padding: 12px !important;
        width: 100% !important;
        max-width: 100% !important;
    }

    .glass-panel {
        padding: 1rem;
    }

    .mobile-nav {
        display: flex;
        position: fixed;
        bottom: 0;
        left: 0;
        right: 0;
        height: 70px;
        background: #ffffff;
        border-top: 1px solid var(--panel-border);
        justify-content: space-around;
        align-items: center;
        z-index: 1000;
    }
}

.m-nav-item {
    background: none;
    border: none;
    color: var(--text-secondary);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: var(--transition);
    white-space: nowrap;
    text-align: center;
}

.m-nav-item i {
    font-size: 1.5rem;
}

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

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

.logo-icon {
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--accent-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: white;
}

.logo span {
    font-weight: 700;
    font-size: 1.1rem;
    line-height: 1.1;
}

.logo small {
    font-weight: 400;
    color: var(--text-secondary);
}

.dock-links {
    display: flex;
    gap: 0.5rem;
    background: #f1f5f9;
    padding: 5px;
    border-radius: 30px;
}

.dock-btn {
    padding: 8px 20px;
    border-radius: 25px;
    color: var(--text-secondary);
    white-space: nowrap;
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.95rem;
}

.dock-btn:hover {
    color: var(--text-primary);
}

.dock-btn.active {
    background: white;
    color: var(--text-primary);
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.user-controls {
    display: flex;
    align-items: center;
    gap: 15px;
}

.mobile-only-title {
    display: none;
    white-space: nowrap;
}

@media (max-width: 900px) {
    .mobile-only-title {
        display: block;
        font-size: 1.1rem;
        font-weight: 600;
    }
}

.nav-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.nav-links li a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: var(--transition);
    font-weight: 500;
}

.nav-links li:hover a {
    background: var(--panel-bg);
    color: var(--text-primary);
}

.nav-links li.active a {
    background: #f3f4f6;
    border-left: 3px solid var(--accent-primary);
    color: var(--text-primary);
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    max-width: 700px;
    margin: 0 auto;
    width: 70%;
}

textarea {
    resize: none;
}

.top-nav {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
}

.greeting h1 {
    font-size: 2rem;
    font-weight: 600;
    margin-bottom: 0.2rem;
}

.greeting p {
    color: var(--text-secondary);
}

.user-profile {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.status-btn {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    white-space: nowrap;
    cursor: pointer;
    transition: var(--transition);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
}

.status-indicator.offline {
    background: var(--expense-color);
    box-shadow: 0 0 10px var(--expense-color);
}

.status-indicator.online {
    background: var(--income-color);
    box-shadow: 0 0 10px var(--income-color);
}

.avatar {
    width: 45px;
    height: 45px;
    border-radius: 50%;
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
}

/* View Sections */
.view-container {
    flex: 1;
    position: relative;
    width: 100%;
}

.view-section {
    animation: fadeIn 0.4s ease-out;
    width: 100%;
}

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

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Glass Panels */
.glass-panel {
    background: var(--panel-bg);
    border: 1px solid var(--panel-border);
    border-radius: 20px;
    padding: 1.5rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    width: 100%;
}

/* Summary Dashboard Views */
.summary-section h3,
.form-header h3 {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: 0;
    color: var(--text-primary);
    white-space: nowrap;
}

/* --- Utility Classes for Layout --- */
.mt-4 {
    margin-top: 1.5rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.text-center {
    text-align: center;
}

.font-medium {
    font-weight: 500;
}

.text-income {
    color: var(--income-color);
    border-bottom: 1px solid var(--income-color);
    padding-bottom: 5px;
    display: inline-block;
}

.text-expense {
    color: var(--expense-color);
    border-bottom: 1px solid var(--expense-color);
    padding-bottom: 5px;
    display: inline-block;
}

.text-right {
    text-align: right;
}

.charts-grid,
.tables-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
}

.charts-grid .chart-container:first-child {
    grid-column: span 2;
}

@media (max-width: 768px) {

    .charts-grid,
    .tables-grid {
        grid-template-columns: 1fr;
    }

    .charts-grid .chart-container:first-child {
        grid-column: span 1;
    }
}

.chart-container {
    background: #ffffff;
    border-radius: 25px;
    padding: 20px 25px;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
    border: 1px solid var(--panel-border);
    position: relative;
    height: 380px;
}

.chart-container h4 {
    margin-bottom: 20px;
}

.chart-container canvas {
    width: 100% !important;
    max-height: 280px !important;
}

.top-cat-summary {
    margin-top: 0.5rem;
    font-size: 0.85rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 4px;
}

.top-cat-summary strong {
    color: var(--text-primary);
    font-weight: 500;
}

.filter-select {
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--panel-border);
    background: var(--panel-bg);
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    cursor: pointer;
    margin-bottom: 0;
    width: auto;
    max-width: 100%;
    height: 42px;
    box-sizing: border-box;
    font-family: inherit;
    font-weight: 500;
}

.summary-cards-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.scard {
    background: #ffffff;
    border-radius: 20px;
    padding: 18px 20px;
    display: flex;
    flex-direction: column;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
    border: 1px solid var(--panel-border);
}

.scard p {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 8px;
}

.scard-summary h2 {
    font-size: 1.6rem;
    font-weight: 700;
}

.scard-summary .text-income {
    color: #10b981;
}

.scard-summary .text-expense {
    color: #ef4444;
}

.scard-list ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.scard-list li {
    font-size: 0.95rem;
    font-weight: 500;
    color: var(--text-primary);
    display: flex;
    justify-content: space-between;
}

.scard-balance {
    grid-column: span 2;
}

.scard-balance h2 {
    font-size: 1.6rem;
    font-weight: 600;
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .summary-cards-grid {
        grid-template-columns: 1fr;
    }

    .scard-balance {
        grid-column: span 1;
    }
}

/* Recent Transactions */
.recent-transactions {
    margin-top: 2rem;
}

.transaction-list {
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    max-height: 550px;
    overflow-y: auto;
    padding-right: 10px;
}

.transaction-list::-webkit-scrollbar {
    width: 6px;
}

.transaction-list::-webkit-scrollbar-track {
    background: transparent;
}

.transaction-list::-webkit-scrollbar-thumb {
    background: var(--panel-border);
    border-radius: 10px;
}

.transaction-list::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

.month-header {
    position: sticky;
    top: 0;
    background: var(--panel-bg);
    z-index: 10;
    padding: 15px 0 10px 0;
    margin-top: 10px;
    border-bottom: 2px solid var(--panel-border);
}

.month-header h5 {
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 600;
}

.empty-state {
    text-align: center;
    padding: 3rem 0;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.transaction-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    background: #ffffff;
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    transition: var(--transition);
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.02);
}

.transaction-item:hover {
    background: var(--panel-bg-hover);
}

.t-main {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.t-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
}

.t-icon.income {
    background: var(--income-bg);
    color: var(--income-color);
}

.t-icon.expense {
    background: var(--expense-bg);
    color: var(--expense-color);
}

.t-details h4 {
    font-size: 1rem;
    font-weight: 500;
}

.t-details p {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

.t-amount {
    font-weight: 600;
}

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

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

/* Form Section */
.form-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.icon-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    transition: var(--transition);
}

.icon-btn:hover {
    color: var(--text-primary);
    transform: rotate(15deg);
}

#transaction-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.input-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

input[type="text"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    background: #ffffff;
    border: 1px solid var(--panel-border);
    color: var(--text-primary);
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    transition: var(--transition);
    outline: none;
    box-shadow: inset 0 1px 2px rgba(0, 0, 0, 0.02);
}

.category-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
    margin-top: 8px;
}

.cat-btn {
    background: #f3f4f6;
    border: 2px solid transparent;
    border-radius: 50px;
    padding: 10px 5px;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 6px;
    cursor: pointer;
    transition: var(--transition);
    color: var(--text-secondary);
}

.cat-btn:hover {
    background: #e5e7eb;
    color: var(--text-primary);
}

.cat-btn span {
    font-size: 0.95rem;
    font-weight: 500;
}

.cat-btn i {
    font-size: 1.3rem;
    color: var(--cat-color);
    background: transparent;
    transition: var(--transition);
}

.cat-btn.active {
    background: var(--cat-color, var(--text-primary));
    color: white;
    border-color: var(--cat-color, var(--text-primary));
}

.cat-btn.active i {
    color: white;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(0, 0, 0, 0.1);
}

/* Override default date picker styles for dark mode is removed */

/* Custom Radio Buttons for Type */
.radio-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.radio-group input[type="radio"] {
    display: none;
}

.radio-label {
    padding: 10px;
    text-align: center;
    border: 1px solid var(--panel-border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
    background: #f9fafb;
}

.radio-group input[type="radio"]:checked+.income-label {
    background: var(--income-bg);
    border-color: var(--income-color);
    color: var(--income-color);
}

.radio-group input[type="radio"]:checked+.expense-label {
    background: var(--expense-bg);
    border-color: var(--expense-color);
    color: var(--expense-color);
}

.amount-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.currency-symbol {
    position: absolute;
    left: 14px;
    color: var(--text-secondary);
    font-weight: 500;
}

.amount-wrapper input {
    padding-left: 30px;
    font-size: 1.2rem;
    font-weight: 600;
}

.submit-btn {
    background: var(--accent-primary);
    color: var(--accent-text);
    border: none;
    padding: 14px;
    border-radius: var(--radius-sm);
    font-size: 1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    margin-top: 5px;
}

.update-btn {
    background: var(--income-color);
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.15);
}

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

.submit-btn.loading .btn-text,
.submit-btn.loading i {
    opacity: 0;
}

.spinner {
    display: none;
    position: absolute;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

.submit-btn.loading .spinner {
    display: block;
}

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

/* Toast Notification */
.toast {
    position: fixed;
    bottom: 90px;
    /* Above mobile nav */
    right: -300px;
    background: #10b981;
    color: white;
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    font-weight: 500;
    box-shadow: 0 10px 30px rgba(16, 185, 129, 0.3);
    transition: right 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
    z-index: 1000;
}

@media(min-width: 901px) {
    .toast {
        bottom: 20px;
    }
}

.toast.show {
    right: 20px;
}

/* Modal Styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(4px);
    z-index: 1000;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    animation: fadeIn 0.3s forwards;
}

.modal-content {
    width: 100%;
    max-width: 500px;
    background: var(--panel-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 1.5rem;
    position: relative;
    max-height: 90vh;
    overflow-y: auto;
}

/* Specific buttons */
.delete-btn {
    background: var(--panel-bg);
    color: var(--expense-color);
    border: 1px solid var(--expense-color);
    margin-top: 10px;
}

.delete-btn:hover {
    background: var(--expense-color);
    color: white;
}

.t-actions {
    margin-left: auto;
    display: flex;
    gap: 8px;
}

.action-btn {
    background: transparent;
    border: none;
    color: var(--text-tertiary);
    font-size: 1.1rem;
    cursor: pointer;
    transition: color 0.2s;
    padding: 0 4px;
}

.action-btn:hover {
    color: var(--text-primary);
}

.icon-toggle-btn {
    background: var(--surface-bg);
    border: 1px solid var(--panel-border);
    border-radius: 8px;
    padding: 8px 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    height: 42px;
    /* Set relative to height of the input */
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-toggle-btn:hover {
    background: #e2e8f0;
    color: var(--text-primary);
}