:root {
    /* Light theme variables */
    --primary: #2196F3;
    --primary-hover: #1976D2;
    --background: #f5f5f5;
    --container: white;
    --text: #333;
    --border: #ccc;
    --shadow: 0 2px 4px rgba(0,0,0,0.1);
    --transition: 0.2s ease;
    --success: #4CAF50;
    --danger: #f44336;
    --card-bg: #ffffff;
    --success-status-bg: rgba(37, 99, 235, 0.6);
    --danger-status-bg:rgba(220, 38, 38, 0.6);
}

[data-theme="dark"] {
    --background: #1a1a1a;
    --container: #2d2d2d;
    --text: white;
    --border: #404040;
    --shadow: 0 2px 4px rgba(0,0,0,0.2);
    --card-bg: #363636;
    --success-status-bg: rgba(96, 165, 250, 0.5);
    --danger-status-bg:rgba(220, 38, 38, 0.5);
}

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

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--background);
    color: var(--text);
    transition: background var(--transition), color var(--transition);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Main content */
main {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
}

/* Container styling */
.container {
    position: relative;
    background: var(--container);
    padding: 1.5rem 1rem 1rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 70%;
    min-height: calc(100vh - 2rem);
    transition: background var(--transition), box-shadow var(--transition);
    margin: 0 auto;
    display: flex;
    flex-direction: column;
}

/* Form styling */
form {
    position: relative;
    background: var(--container);
    padding: 3rem 1.5rem 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow);
    width: calc(100% - 2rem);
    max-width: 400px;
    transition: background var(--transition), box-shadow var(--transition);
    text-align: center;
    margin: 0 auto;
    transform: translateY(-10%);
}

/* Theme toggle */
#themeToggle {
    position: absolute;
    top: 0.75rem;
    right: 0.75rem;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0.25rem;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    transition: background-color var(--transition);
}

#themeToggle:hover {
    background: rgba(128, 128, 128, 0.1);
}

#themeToggle svg {
    width: 20px;
    height: 20px;
    stroke: var(--text);
    fill: none;
    stroke-width: 2;
    stroke-linecap: round;
    stroke-linejoin: round;
    transition: stroke var(--transition);
}

[data-theme="light"] .moon {
    display: block;
}

[data-theme="light"] .sun {
    display: none;
}

[data-theme="dark"] .moon {
    display: none;
}

[data-theme="dark"] .sun {
    display: block;
}

/* Headings */
h1 {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text);
    text-align: center;
    padding-bottom: 1.5rem;
}

h2 {
    font-size: 0.875rem;
    margin-bottom: 1rem;
}

h3 {
    font-size: 0.875rem;
    margin-bottom: 0.125rem;
    line-height: 1.2;
}

/* PIN input styling */
.pin-input-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin: 2rem 0;
    padding: 0 0.5rem;
}

.pin-input-container input.pin-input {
    width: 44px;
    height: 44px;
    text-align: center;
    font-size: 1.25rem;
    font-weight: 500;
    border: 2px solid var(--border);
    border-radius: 12px;
    background: var(--container);
    color: var(--text);
    transition: all var(--transition);
    -webkit-appearance: none;
    -moz-appearance: textfield;
    appearance: none;
}

.pin-input-container input.pin-input::-webkit-outer-spin-button,
.pin-input-container input.pin-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.pin-input-container input.pin-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.15);
}

.pin-input-container input.pin-input.has-value {
    border-color: var(--primary);
    background-color: var(--primary);
    color: white;
}

.pin-error {
    color: #ff4444;
    font-size: 0.9rem;
    margin-top: 0.5rem;
    text-align: center;
    display: none;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity var(--transition), transform var(--transition);
}

.pin-error[aria-hidden="false"] {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

/* Responsive adjustments */
@media (max-width: 400px) {
    form, .container {
        padding: 3rem 0.75rem 1.5rem;
        width: calc(100% - 1rem);
    }

    .pin-input-container {
        gap: 0.4rem;
        padding: 0;
    }

    .pin-input-container input.pin-input {
        width: 36px;
        height: 36px;
        font-size: 1rem;
        border-radius: 8px;
    }

    h1 {
        font-size: 1.75rem;
    }
}

@media (max-width: 320px) {
    .pin-input-container input.pin-input {
        width: 32px;
        height: 32px;
    }
}

/* Header and Date Range Selector */
header {
    text-align: center;
    margin-bottom: 2rem;
}

.date-range-selector {
    margin: 1.5rem auto;
    padding: 1rem;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 60%;
}

.date-input-group {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.25rem;
}

.date-input-group input[type="date"] {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--container);
    color: var(--text);
    font-size: 0.875rem;
    font-family: inherit;
    width: auto;
    min-width: 45%;
    text-align: center;
}

.date-input-group input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(var(--is-dark, 0));
    opacity: 0.5;
    cursor: pointer;
}

.date-input-group input[type="date"]::-webkit-calendar-picker-indicator:hover {
    opacity: 0.8;
}

.date-separator {
    color: var(--text);
    opacity: 0.7;
    font-size: 0.875rem;
}

@media (max-width: 670px) {
    .date-input-group {
        flex-direction: column;
        gap: 0.25rem;
    }
    
    .date-input-group input[type="date"] {
        width: 100%;
    }
}

/* Overview Section */
.overview {
    margin-bottom: 1rem;
}

.balance-card {
    background: var(--card-bg);
    padding: 0.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
    margin-bottom: 0.5rem;
}

.summary-cards {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.card {
    background: var(--card-bg);
    padding: 0.5rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    text-align: center;
}

.card.income {
    border-left: 4px solid var(--success);
}

.card.expenses {
    border-left: 4px solid var(--danger);
}

.amount {
    font-size: 1.25rem;
    font-weight: 600;
    margin-top: 0;
    line-height: 1.2;
}

.amount.positive {
    color: var(--success);
}

.amount.negative {
    color: var(--danger);
}

/* Quick Add Form */
.quick-add {
    margin-bottom: 1rem;
}

#transactionForm {
    display: grid;
    gap: 0.5rem;
    padding: 0.75rem;
    background: var(--card-bg);
    border-radius: 8px;
    box-shadow: var(--shadow);
    max-width: 100%;
    transform: none;
}

#transactionForm select,
#transactionForm input {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--container);
    color: var(--text);
    font-size: 0.875rem;
    width: 100%;
}

#transactionForm button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: background-color var(--transition);
}

#transactionForm button:hover {
    background: var(--primary-hover);
}

/* Transactions List */
.transactions {
    background: var(--card-bg);
    padding: 0.75rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    margin-bottom: 1rem;
}

.transactions-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.sort-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sort-type-toggle {
    display: flex;
    gap: 0;
    background: var(--background);
    padding: 0.25rem;
    border-radius: 100px;
}

.sort-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    opacity: 0.7;
    min-width: 32px;
    min-height: 32px;
}

.currency-sort-symbol {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text);
    line-height: 1;
}

.sort-btn svg {
    width: 16px;
    height: 16px;
    stroke: var(--text);
}

.sort-btn:hover {
    opacity: 1;
    background: rgba(128, 128, 128, 0.1);
}

.sort-btn.active {
    background: var(--container);
    opacity: 1;
    box-shadow: var(--shadow);
}

.sort-direction-btn {
    background: none;
    border: none;
    padding: 0.5rem;
    cursor: pointer;
    border-radius: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    opacity: 0.7;
}

.sort-direction-btn:hover {
    opacity: 1;
    background: rgba(128, 128, 128, 0.1);
}

.sort-direction-btn svg {
    width: 16px;
    height: 16px;
    stroke: var(--text);
    transition: transform var(--transition);
}

.sort-direction-btn.descending svg {
    transform: rotate(180deg);
}

#transactionsList {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

/* Update Transaction Item Styles */
.transaction-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem;
    border-radius: 6px;
    background: var(--container);
    border: 1px solid var(--border);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition);
}

.transaction-item:hover {
    background: rgba(128, 128, 128, 0.05);
}

.transaction-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex: 1;
    margin-right: 0.5rem;
}

.delete-transaction {
    background: none;
    border: none;
    padding: 0.25rem;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.5;
    transition: all var(--transition);
}

.delete-transaction:hover {
    opacity: 1;
    background: rgba(244, 67, 54, 0.1);
}

.delete-transaction svg {
    width: 16px;
    height: 16px;
    stroke: var(--danger);
}

.transaction-item .details {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
}

.transaction-item .description {
    font-weight: 500;
}

.transaction-item .notes {
    font-size: 0.75rem;
    color: var(--text);
    opacity: 0.8;
    margin-top: 0.25rem;
    line-height: 1.3;
}

.transaction-item .metadata {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.75rem;
    opacity: 0.7;
}

.transaction-item .category {
    color: var(--text);
}

.transaction-item .date {
    color: var(--text);
}

.transaction-item .metadata .category::after {
    content: "•";
    margin-left: 0.5rem;
}

.transaction-item .transaction-amount {
    font-weight: 600;
}

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

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

.transaction-item .recurring-info {
    color: var(--primary);
    font-size: 0.75rem;
    opacity: 0.8;
}

.transaction-item .metadata .recurring-info::before {
    content: "•";
    margin: 0 0.5rem;
    color: var(--text);
    opacity: 0.7;
}

/* Footer */
footer {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
    padding: 1rem;
    width: 100%;
}

.export-buttons {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    justify-content: center;
    background: var(--container);
    padding: 0.5rem;
    border-radius: 6px;
    border: 1px solid var(--border);
    margin: 0 auto;
    width: fit-content;
}

.export-btn {
    all: unset;
    background: transparent;
    border: 1px solid var(--border);
    padding: 0.5rem 1rem;
    cursor: pointer;
    color: var(--text);
    border-radius: 4px;
    transition: all 0.2s;
    font-size: 0.9rem;
    min-width: 60px;
    text-align: center;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    box-sizing: border-box;
}

.export-btn:hover {
    background-color: var(--hover-color);
    border-color: var(--accent-color);
}

.export-btn:active {
    transform: translateY(1px);
}

/* Remove these specific styles */
#exportBtn {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text);
    border-radius: 4px;
    transition: background-color 0.2s;
}

#exportBtn:hover {
    background-color: rgba(128, 128, 128, 0.1);
}

#exportBtn svg {
    width: 24px;
    height: 24px;
    stroke: currentColor;
}

/* Responsive adjustments */
@media (max-width: 860px) {
    .container {
        padding: 1rem 0.75rem;
        max-width: 100%;
    }

    .summary-cards {
        grid-template-columns: 1fr;
    }

    .amount {
        font-size: 1.125rem;
    }

    .transaction-item {
        padding: 0.5rem;
    }
    
    .delete-transaction svg {
        width: 14px;
        height: 14px;
    }
}

/* Add Transaction Button */
.add-transaction-btn {
    width: auto;
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.5rem 1.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    margin: 0 auto 1rem;
    display: block;
    transition: background-color var(--transition);
}

.add-transaction-btn:hover {
    background: var(--primary-hover);
}

@media (max-width: 600px) {
    .add-transaction-btn {
        width: auto;
        padding: 0.5rem 2rem;
    }
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    align-items: center;
    justify-content: center;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--container);
    padding: 1rem;
    border-radius: 8px;
    box-shadow: var(--shadow);
    width: 90%;
    max-width: 400px;
    position: relative;
}

.modal-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    margin-bottom: 1.5rem;
    position: relative;
}

.close-modal {
    position: absolute;
    right: -0.5rem;
    top: -0.5rem;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.25rem;
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
    opacity: 0.7;
    transition: opacity var(--transition);
}

.close-modal:hover {
    opacity: 1;
}

.transaction-type-toggle {
    display: flex;
    gap: 0;
    width: 100%;
    max-width: 280px;
    background: var(--background);
    padding: 0.25rem;
    border-radius: 100px;
}

.toggle-btn {
    flex: 1;
    padding: 0.5rem 1rem;
    border: none;
    background: transparent;
    color: var(--text);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all var(--transition);
    border-radius: 100px;
    opacity: 0.7;
    font-weight: 500;
}

.toggle-btn:hover {
    opacity: 1;
}

.toggle-btn.active {
    background: var(--container);
    color: var(--primary);
    opacity: 1;
    box-shadow: var(--shadow);
}

#transactionForm {
    display: grid;
    gap: 0.75rem;
}

#transactionForm input,
#transactionForm select,
#transactionForm textarea {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--container);
    color: var(--text);
    font-size: 0.875rem;
    width: 100%;
}

#transactionForm textarea {
    resize: vertical;
    min-height: 60px;
    font-family: inherit;
}

#transactionForm button {
    background: var(--primary);
    color: white;
    border: none;
    padding: 0.5rem;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.875rem;
    transition: background-color var(--transition);
}

#transactionForm button:hover {
    background: var(--primary-hover);
}

/* Amount Input Styling */
.amount-input-wrapper {
    position: relative;
    display: flex;
    align-items: center;
}

.currency-symbol {
    position: absolute;
    left: 0.5rem;
    color: var(--text);
    opacity: 0.7;
    font-size: 0.875rem;
    pointer-events: none;
}

.amount-input-wrapper input {
    padding-left: 1.25rem !important;
}

/* Remove spinner arrows */
.amount-input-wrapper input::-webkit-outer-spin-button,
.amount-input-wrapper input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.amount-input-wrapper input[type=number] {
    -moz-appearance: textfield;
    appearance: none;
}

#transactionForm input[type="date"] {
    font-family: inherit;
    color: var(--text);
    opacity: 0.9;
}

#transactionForm input[type="date"]::-webkit-calendar-picker-indicator {
    filter: invert(var(--is-dark, 0));
    opacity: 0.5;
    cursor: pointer;
}

#transactionForm input[type="date"]::-webkit-calendar-picker-indicator:hover {
    opacity: 0.8;
}

/* Card Headers and Filter Buttons */
.card-header {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 0.125rem;
}

.filter-btn {
    background: none;
    border: none;
    padding: 0.25rem;
    cursor: pointer;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition);
    opacity: 0.5;
}

.filter-btn:hover {
    opacity: 0.8;
    background: rgba(128, 128, 128, 0.1);
}

.filter-btn.active {
    opacity: 1;
    background: rgba(128, 128, 128, 0.1);
}

.filter-btn svg {
    width: 14px;
    height: 14px;
    stroke: var(--text);
}

.card.income .filter-btn.active svg {
    stroke: var(--success);
}

.card.expenses .filter-btn.active svg {
    stroke: var(--danger);
}

/* Recurring transaction controls */
.recurring-controls {
    margin-top: 0.75rem;
    padding-top: 0.75rem;
    border-top: 1px solid var(--border);
}

.recurring-checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

.recurring-checkbox-wrapper label {
    color: var(--text);
    font-size: 0.875rem;
}

.recurring-options {
    display: grid;
    gap: 0.75rem;
}

.interval-wrapper {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.interval-wrapper input[type="number"] {
    width: 60px;
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--container);
    color: var(--text);
}

.interval-wrapper select,
#recurring-weekday {
    padding: 0.5rem;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: var(--container);
    color: var(--text);
    font-size: 0.875rem;
}

/* Style for recurring transaction instances in the list */
.transaction-item.recurring-instance {
    border-left: 3px solid var(--primary);
}

.transaction-item.recurring-instance::before {
    content: "↻";
    margin-right: 0.5rem;
    color: var(--primary);
}

/* Custom Category Field Styles */
#customCategoryField {
    margin-top: 10px;
    display: flex;
    gap: 8px;
    align-items: center;
}

#customCategory {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--container);
    color: var(--text);
}

#customCategoryField button {
    padding: 8px 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
}

#saveCategory {
    background: var(--success);
    color: white;
}

#saveCategory:hover {
    background: color-mix(in srgb, var(--success) 85%, black);
}

#cancelCategory {
    background: var(--danger);
    color: white;
}

#cancelCategory:hover {
    background: color-mix(in srgb, var(--danger) 85%, black);
}

.toast-container {
    position: fixed;
    bottom: 1rem;
    left: 50%;
    transform: translateX(-50%);
    padding: 0.5rem 1rem;
    display: flex;
    flex-direction: column;
    gap: 10px;
    z-index: 2000;
}

.toast {
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    opacity: 0;
    transition: opacity 0.3s ease-in-out;
    max-width: 300px;
    box-sizing: border-box;
    word-wrap: break-word;
    font-size: 0.875rem;
    cursor: pointer;
    text-align: center;
}

.toast.show {
    opacity: 1;
}

.toast.success {
    background-color: var(--success-status-bg);
}

.toast.error {
    background-color: var(--danger-status-bg);
}