/* ================================================== */
/* CSS Variables and Theme */
/* ================================================== */
:root {
    /* Kalpurush font */
    --font-main: 'Kalpurush', sans-serif;

    /* Dark mode (default) */
    --bg-primary: #101727;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --accent-primary: #ef4444;  /* Red for expense/unpaid */
    --accent-secondary: #22c55e; /* Green for income/paid */
    --accent-blue: #3b82f6;
    --accent-yellow: #facc15;
    --accent-purple: #8b5cf6;
    --border-color: #334155;
    --shadow-color: rgba(0, 0, 0, 0.4);
    --progress-bg: #475569;
}

html[data-theme='light'] {
    /* Light mode */
    --bg-primary: #f1f5f9;
    --bg-secondary: #ffffff;
    --bg-tertiary: #e2e8f0;
    --text-primary: #1e293b;
    --text-secondary: #475569;
    --accent-primary: #dc2626;
    --accent-secondary: #16a34a;
    --accent-blue: #2563eb;
    --accent-yellow: #f59e0b;
    --accent-purple: #7c3aed;
    --border-color: #e2e8f0;
    --shadow-color: rgba(0, 0, 0, 0.1);
    --progress-bg: #e2e8f0;
}

/* ================================================== */
/* Basic Reset and Global Styles */
/* ================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-main);
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
    padding-bottom: 100px;
}

main {
    padding: 1.5rem;
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

h1, h2, h3, p {
    margin: 0;
}

h1 {
    color: var(--text-primary);
    font-size: 1.8rem;
    font-weight: 700;
}

h2 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    font-size: 1.5rem;
}

p {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ================================================== */
/* Header Styles */
/* ================================================== */
header {
    background-color: var(--bg-secondary);
    padding: 1rem 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 2px 10px var(--shadow-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    display: flex;
    align-items: center;
    gap: 10px;
}

.header-icon {
    color: var(--accent-blue);
    font-size: 1.8rem;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

/* Theme toggle switch */
.theme-switch-wrapper {
    display: flex;
    align-items: center;
    gap: 10px;
}
.theme-label {
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    user-select: none;
}
.theme-label .light-icon { display: none; }
.theme-label .dark-icon { display: block; }
html[data-theme='light'] .light-icon { display: block; }
html[data-theme='light'] .dark-icon { display: none; }

.theme-switch {
    position: relative;
    width: 48px;
    height: 24px;
}
.theme-switch input { display: none; }
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: var(--bg-tertiary);
    transition: .4s;
    border-radius: 24px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 16px;
    width: 16px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider { background-color: var(--accent-blue); }
input:checked + .slider:before { transform: translateX(24px); }

/* Profile Dropdown */
.profile-dropdown {
    position: relative;
}
.profile-btn {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 10px;
    font-family: var(--font-main);
}
.profile-btn i.fa-user-circle {
    font-size: 1.5rem;
}
.dropdown-content {
    display: none;
    position: absolute;
    right: 0;
    top: calc(100% + 10px);
    background-color: var(--bg-secondary);
    min-width: 220px;
    box-shadow: 0 8px 16px var(--shadow-color);
    border-radius: 8px;
    z-index: 101;
    overflow: hidden;
    animation: fadeInDropdown 0.3s ease;
}
.profile-dropdown.active .dropdown-content {
    display: block;
}
.dropdown-content a {
    color: var(--text-secondary);
    padding: 12px 16px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 10px;
    transition: background-color 0.2s;
}
.dropdown-content a:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}
.dropdown-content hr {
    border: none;
    border-top: 1px solid var(--border-color);
    margin: 0;
}
.danger-link {
    color: var(--accent-primary) !important;
}
.danger-link:hover {
    background-color: color-mix(in srgb, var(--accent-primary) 15%, transparent) !important;
    color: var(--accent-primary) !important;
}
@keyframes fadeInDropdown {
    from { opacity: 0; transform: translateY(-10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ================================================== */
/* Tab Navigation */
/* ================================================== */
.tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    border-bottom: 2px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.tab-link {
    padding: 0.75rem 1.25rem;
    cursor: pointer;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-family: var(--font-main);
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    transition: background-color 0.3s, color 0.3s;
    display: flex;
    align-items: center;
    gap: 8px;
}

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

.tab-link.active {
    background-color: var(--accent-blue);
    color: white;
}

.tab-content {
    display: none;
    flex-direction: column;
    gap: 2rem;
    animation: fadeIn 0.5s ease-in-out;
}

.tab-content.active {
    display: flex;
}

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

/* ================================================== */
/* Dashboard: Summary Cards */
/* ================================================== */
#summary {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1rem;
}

.summary-card {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    border-left: 5px solid;
    box-shadow: 0 4px 15px var(--shadow-color);
    transition: transform 0.3s, box-shadow 0.3s;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}
.summary-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 25px var(--shadow-color);
}
.summary-card.income { border-color: var(--accent-secondary); }
.summary-card.expense { border-color: var(--accent-primary); }
.summary-card.balance { border-color: var(--accent-blue); }

.card-icon {
    font-size: 2rem;
    padding: 1rem;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.income .card-icon { background-color: color-mix(in srgb, var(--accent-secondary) 20%, transparent); color: var(--accent-secondary); }
.expense .card-icon { background-color: color-mix(in srgb, var(--accent-primary) 20%, transparent); color: var(--accent-primary); }
.balance .card-icon { background-color: color-mix(in srgb, var(--accent-blue) 20%, transparent); color: var(--accent-blue); }

.card-details h3 {
    color: var(--text-secondary);
    font-weight: 500;
    margin-bottom: 0.25rem;
    font-size: 1rem;
}
.card-details p {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

/* ================================================== */
/* Chart Section */
/* ================================================== */
#charts h2, .transaction-header h2 {
    border-left: 4px solid var(--accent-blue);
    padding-left: 10px;
}

.chart-container {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow-color);
    height: 350px;
    position: relative;
}

/* ================================================== */
/* Filter Controls */
/* ================================================== */
.filter-controls {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: center;
    margin-bottom: 1.5rem;
    background-color: var(--bg-secondary);
    padding: 1rem;
    border-radius: 12px;
}
.search-wrapper {
    position: relative;
    flex-grow: 1;
}
.search-wrapper i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}
#searchInput, #typeFilter, .date-filter {
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    font-family: var(--font-main);
    font-size: 1rem;
}
#searchInput {
    padding-left: 2.5rem;
    width: 100%;
}
.filter-controls label {
    font-weight: 500;
}

/* ================================================== */
/* Management Sections (Budgets, Goals, Categories) */
/* ================================================== */
.management-section {
    background-color: var(--bg-secondary);
    padding: 1.5rem;
    border-radius: 12px;
    box-shadow: 0 4px 15px var(--shadow-color);
    width: 100%;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-header h2 {
    margin-bottom: 0;
    border-left: 4px solid var(--accent-blue);
    padding-left: 10px;
}

.header-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

/* Account, Budget, Goal, Asset Cards */
.account-card, .budget-card, .goal-card, .asset-card {
    background-color: var(--bg-tertiary);
    padding: 1.25rem;
    border-radius: 10px;
    display: flex;
    flex-direction: column;
    gap: 1rem;
    position: relative;
    overflow: hidden;
}
.account-card-header, .budget-card-header, .goal-card-header, .asset-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
}
.account-card-header h3, .budget-card-header h3, .goal-card-header h3, .asset-card-header h3 {
    color: var(--text-primary);
    font-size: 1.2rem;
}
.account-info p, .budget-info p, .goal-info p, .asset-info p {
    font-size: 0.9rem;
    margin-bottom: 0.25rem;
}
.account-info .amount, .budget-info .amount, .goal-info .amount, .asset-info .amount {
    font-weight: 700;
    color: var(--text-primary);
    font-size: 1.5rem;
}
.account-card .card-icon, .asset-card .card-icon {
    position: absolute;
    top: 1rem;
    right: 1rem;
    font-size: 1.5rem;
    opacity: 0.2;
}
.asset-card .card-icon {
    color: var(--accent-purple);
}

.progress-bar {
    width: 100%;
    height: 12px;
    background-color: var(--progress-bg);
    border-radius: 6px;
    overflow: hidden;
}
.progress {
    height: 100%;
    background-color: var(--accent-blue);
    border-radius: 6px;
    transition: width 0.5s ease;
}
.progress.over-budget {
    background-color: var(--accent-primary);
}
.progress-text {
    font-size: 0.8rem;
    text-align: right;
    margin-top: 0.25rem;
}
.two-column-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
}


/* ================================================== */
/* Table Styles */
/* ================================================== */
.table-container {
    overflow-x: auto;
}
table {
    width: 100%;
    border-collapse: collapse;
}
th, td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
    white-space: nowrap;
}
thead { background-color: var(--bg-tertiary); }
th { color: var(--text-primary); font-weight: 600; }
tbody tr:hover { background-color: var(--bg-tertiary); }
.placeholder-cell { text-align: center; padding: 2rem; color: var(--text-secondary); }
.income-text { color: var(--accent-secondary); font-weight: 600; }
.expense-text { color: var(--accent-primary); font-weight: 600; }

/* Tags in transaction table */
.tags-container {
    display: flex;
    flex-wrap: wrap;
    gap: 0.25rem;
    margin-top: 0.5rem;
}
.tag-badge {
    background-color: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 0.15rem 0.5rem;
    border-radius: 10px;
    font-size: 0.75rem;
}

/* Action buttons in tables */
.action-buttons {
    display: flex;
    gap: 0.5rem;
}
.action-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1rem;
    padding: 0.5rem;
    border-radius: 6px;
    transition: background-color 0.2s, color 0.2s;
}
.edit-btn { color: var(--accent-blue); }
.delete-btn { color: var(--accent-primary); }
.edit-btn:hover { background-color: color-mix(in srgb, var(--accent-blue) 20%, transparent); }
.delete-btn:hover { background-color: color-mix(in srgb, var(--accent-primary) 20%, transparent); }

/* Status Badges for Debt Table */
.status-badge {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-weight: 600;
    font-size: 0.85rem;
    text-align: center;
    display: inline-block;
    color: white;
    text-transform: capitalize;
}

.status-paid { background-color: var(--accent-secondary); }
.status-unpaid { background-color: var(--accent-primary); }
.loan-text { color: var(--accent-yellow); font-weight: 600; }
.debt-text { color: var(--accent-primary); font-weight: 600; }


/* ================================================== */
/* General Button Styles */
/* ================================================== */
button, .btn {
    cursor: pointer;
    font-family: var(--font-main);
    border-radius: 8px;
    padding: 0.75rem 1.5rem;
    border: none;
    font-size: 1rem;
    font-weight: 600;
    transition: transform 0.2s, background-color 0.2s, box-shadow 0.2s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}
button:hover, .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px var(--shadow-color);
}
.btn-primary { background-color: var(--accent-blue); color: white; }
.btn-secondary { background-color: var(--bg-tertiary); color: var(--text-primary); }
.btn-danger { background-color: var(--accent-primary); color: white; }
.btn-primary:hover { background-color: color-mix(in srgb, var(--accent-blue) 90%, black); }
.btn-secondary:hover { background-color: var(--border-color); }
.btn-danger:hover { background-color: color-mix(in srgb, var(--accent-primary) 90%, black); }
button:disabled {
    cursor: not-allowed;
    opacity: 0.6;
    transform: none;
    box-shadow: none;
}

/* ================================================== */
/* Floating Action Button (FAB) */
/* ================================================== */
#add-transaction-fab {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 60px;
    height: 60px;
    background: var(--accent-blue);
    color: white;
    border-radius: 50%;
    font-size: 1.8rem;
    box-shadow: 0 5px 15px var(--shadow-color);
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.3s ease, background-color 0.3s;
}
#add-transaction-fab:hover {
    transform: scale(1.1) rotate(90deg);
    background: color-mix(in srgb, var(--accent-blue) 90%, black);
}

/* ================================================== */
/* Modal and Dialog Styles */
/* ================================================== */
dialog {
    border: none;
    border-radius: 15px;
    background-color: var(--bg-secondary);
    color: var(--text-secondary);
    box-shadow: 0 10px 30px var(--shadow-color);
    width: 90%;
    max-width: 600px; /* Increased max-width for history modal */
    padding: 2rem;
}
dialog::backdrop {
    background-color: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(5px);
}
dialog[open] {
    animation: fadeInModal 0.3s ease-out forwards;
}
@keyframes fadeInModal {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

dialog h2 {
    text-align: center;
    border: none;
    padding: 0;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}
dialog form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}
dialog label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    display: block;
}
dialog input, dialog select, dialog textarea {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-secondary);
    font-family: var(--font-main);
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}
dialog input:focus, dialog select:focus, dialog textarea:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-blue) 30%, transparent);
}
.form-buttons {
    display: flex;
    justify-content: flex-end;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 1rem;
}

/* Reminder Section in Forms */
.reminder-section {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: var(--bg-primary);
    padding: 0.75rem;
    border-radius: 8px;
}
.reminder-section label {
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}
.reminder-section input[type="number"] {
    width: 120px;
}

/* Receipt Preview */
#receipt-preview {
    margin-top: 10px;
    display: flex;
    align-items: center;
    gap: 10px;
}
#receipt-preview a {
    color: var(--accent-blue);
    font-weight: 600;
}

/* Custom confirmation dialog */
#confirm-dialog .dialog-content {
    text-align: center;
}
#confirm-msg {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
    color: var(--text-primary);
}
.dialog-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

/* ================================================== */
/* Settings Page */
/* ================================================== */
.settings-options {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}
.setting-item {
    background-color: var(--bg-tertiary);
    padding: 1.5rem;
    border-radius: 10px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}
.setting-item h3 {
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.2rem;
}
.setting-item p {
    flex-basis: 100%;
    margin-top: -0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
}
.danger-text {
    color: var(--accent-yellow);
}

/* ================================================== */
/* Toast Notifications */
/* ================================================== */
#toast-container {
    position: fixed;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 10px;
    align-items: center;
}
.toast {
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.3s ease, transform 0.3s ease;
    font-family: var(--font-main);
}
.toast.show {
    opacity: 1;
    transform: translateY(0);
}
.toast.success { background-color: var(--accent-secondary); }
.toast.error { background-color: var(--accent-primary); }
.toast.info { background-color: var(--accent-blue); }

/* ================================================== */
/* Responsive Design */
/* ================================================== */
@media (max-width: 992px) {
    .two-column-layout {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    main {
        padding: 1rem;
    }
    header {
        padding: 1rem;
    }
    .tabs {
        gap: 0.25rem;
    }
    .tab-link {
        padding: 0.5rem 0.75rem;
        font-size: 0.9rem;
    }
    .summary-card {
        flex-basis: 100%;
    }
    .setting-item {
        flex-direction: column;
        align-items: flex-start;
    }
    .header-right {
        gap: 1rem;
    }
    .profile-btn #user-email-display {
        display: none; /* Hide email on smaller screens */
    }
}

@media (max-width: 600px) {
    header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    .header-content {
        justify-content: space-between;
    }
    .header-right {
        justify-content: space-between;
    }
    .filter-controls {
        flex-direction: column;
        align-items: stretch;
    }
}