@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;600;700&display=swap');

:root {
    --font-family: 'Poppins', sans-serif;
    --transition-speed: 0.3s ease;

    --light-bg: #f4f7f6;
    --light-surface: #ffffff;
    --light-text: #0a0a0a;
    --light-text-muted: #555;
    --light-border: rgba(0, 0, 0, 0.1);

    --dark-bg: #121212;
    --dark-surface: #1e1e1e;
    --dark-text: #f1f1f1;
    --dark-text-muted: #aaa;
    --dark-border: rgba(255, 255, 255, 0.1);
    
    --primary-color: #6a11cb;
    --primary-gradient: linear-gradient(135deg, #6a11cb 0%, #2575fc 100%);
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

body.light-theme {
    background-color: var(--light-bg);
    color: var(--light-text);
}

body.dark-theme {
    background: var(--dark-bg);
    color: var(--dark-text);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}


.btn {
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-gradient);
    color: white;
}

.btn-primary:hover {
    opacity: 0.9;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(106, 17, 203, 0.3);
}

.btn-danger {
    background-color: var(--danger-color);
    color: white;
}
.btn-danger:hover {
    background-color: #c0392b;
}

.btn-secondary {
    background-color: transparent;
    border: 1px solid var(--light-text-muted);
    color: var(--light-text-muted);
}

body.dark-theme .btn-secondary {
    border-color: var(--dark-text-muted);
    color: var(--dark-text-muted);
}

.btn-secondary:hover {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.btn-block {
    display: flex;
    justify-content: center;
    width: 100%;
    padding: 12px;
    font-size: 1.1rem;
}

select, input[type="text"], input[type="number"], input[type="date"] {
    width: 100%;
    padding: 10px 12px;
    border-radius: 8px;
    border: 1px solid;
    font-family: var(--font-family);
    font-size: 1rem;
    transition: all var(--transition-speed);
}

body.light-theme select,
body.light-theme input {
    background: var(--light-surface);
    border-color: var(--light-border);
    color: var(--light-text);
}

body.dark-theme select,
body.dark-theme input {
    background: var(--dark-surface);
    border-color: var(--dark-border);
    color: var(--dark-text);
}

select:focus, input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(106, 17, 203, 0.2);
}


.card, .chart-card, .list-item, .modal-content, .navbar {
    border: 1px solid;
    border-radius: 16px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
}

body.light-theme .card,
body.light-theme .chart-card,
body.light-theme .list-item,
body.light-theme .modal-content,
body.light-theme .navbar {
    background-color: rgba(255, 255, 255, 0.7);
    border-color: rgba(255, 255, 255, 0.9);
    backdrop-filter: blur(10px);
}

body.dark-theme .card,
body.dark-theme .chart-card,
body.dark-theme .list-item,
body.dark-theme .modal-content,
body.dark-theme .navbar {
    background-color: rgba(30, 30, 30, 0.7);
    border-color: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
}


.navbar {
    padding: 1rem 0;
    position: sticky;
    top: 10px;
    margin: 10px auto 0;
    z-index: 100;
    max-width: 1240px;
}

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

.navbar h2 {
    color: var(--primary-color);
    font-weight: 700;
}

main {
    padding-top: 2rem;
}

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


.theme-switcher {
    display: flex;
    align-items: center;
    gap: 8px;
}
.theme-switcher i {
    width: 20px;
    height: 20px;
}
.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 28px;
}
.switch input { display: none; }
.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #ccc;
    transition: .4s;
    border-radius: 34px;
}
.slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 4px;
    bottom: 4px;
    background-color: white;
    transition: .4s;
    border-radius: 50%;
}
input:checked + .slider {
    background: var(--primary-gradient);
}
input:checked + .slider:before {
    transform: translateX(22px);
}


.dashboard {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 2rem;
}

.card {
    padding: 1.5rem;
}
.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1rem;
    font-weight: 600;
}
.card h1 {
    font-size: 2.2rem;
    font-weight: 700;
    margin-top: 0.5rem;
}
.card.balance h1 { color: var(--primary-color); }
.card.income h1 { color: var(--success-color); }
.card.expense h1 { color: var(--danger-color); }

body.light-theme .card-header span { color: var(--light-text-muted); }
body.dark-theme .card-header span { color: var(--dark-text-muted); }

/* Charts */
.charts-container {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 20px;
    margin-bottom: 2rem;
}
.chart-card {
    padding: 1.5rem;
}
.chart-card h4 {
    margin-bottom: 1rem;
    font-weight: 600;
    text-align: center;
}
#category-chart, #flow-chart {
    max-height: 350px;
    width: 100% !important;
}

/* Transactions */
.transactions-section { margin-bottom: 2rem; }
.controls-group { display: flex; gap: 1rem; }
#search-bar { width: 250px; }
#transaction-list {
    list-style: none;
    margin-top: 1rem;
    display: flex;
    flex-direction: column;
    gap: 12px;
}
.list-item {
    display: grid;
    grid-template-columns: auto 1fr auto auto;
    align-items: center;
    gap: 15px;
    padding: 1rem 1.5rem;
    transition: all var(--transition-speed);
}
.list-item:hover {
    transform: scale(1.02);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.list-item-icon {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}
.list-item-icon i { width: 20px; }
.list-item.income .list-item-icon { background-color: rgba(46, 204, 113, 0.1); color: var(--success-color); }
.list-item.expense .list-item-icon { background-color: rgba(231, 76, 60, 0.1); color: var(--danger-color); }

.list-item-details .desc {
    font-weight: 600;
    font-size: 1rem;
}
.list-item-details .category,
.list-item-details .date {
    font-size: 0.85rem;
}

body.light-theme .list-item-details .category,
body.light-theme .list-item-details .date {
    color: var(--light-text-muted);
}
body.dark-theme .list-item-details .category,
body.dark-theme .list-item-details .date {
    color: var(--dark-text-muted);
}

.list-item-value {
    font-size: 1.1rem;
    font-weight: 600;
}
.list-item-value.income { color: var(--success-color); }
.list-item-value.expense { color: var(--danger-color); }

.list-item-actions { display: flex; gap: 10px; }
.list-item-actions button {
    padding: 6px;
    background: transparent;
    border: none;
    cursor: pointer;
    transition: all var(--transition-speed);
}
body.light-theme .list-item-actions button { color: var(--light-text-muted); }
body.dark-theme .list-item-actions button { color: var(--dark-text-muted); }

.list-item-actions button:hover {
    color: var(--primary-color);
    transform: scale(1.1);
}
.list-item-actions .delete-btn:hover {
    color: var(--danger-color);
}

.empty-state {
    text-align: center;
    padding: 3rem;
    display: none; 
}
body.light-theme .empty-state { color: var(--light-text-muted); }
body.dark-theme .empty-state { color: var(--dark-text-muted); }


.danger-zone {
    border-top: 1px dashed var(--danger-color);
    padding-top: 1.5rem;
    margin-top: 2rem;
}
.danger-zone h4 { color: var(--danger-color); margin-bottom: 1rem; }


.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.6);
    display: none; 
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s;
}
.modal-content {
    width: 90%;
    max-width: 550px;
    padding: 2rem;
    animation: slideDown 0.4s;
}
.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}
.close-btn {
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
}
body.light-theme .close-btn { color: var(--light-text); }
body.dark-theme .close-btn { color: var(--dark-text); }

.form-error {
    background-color: rgba(231, 76, 60, 0.1);
    color: var(--danger-color);
    border: 1px solid var(--danger-color);
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 1rem;
    display: none; 
}

.form-control { margin-bottom: 1.2rem; }
.form-control label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}
.form-group-inline {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.radio-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}
.radio-group input[type="radio"] { display: none; }
.radio-label {
    padding: 12px;
    border: 2px solid;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-speed);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
}
body.light-theme .radio-label { border-color: var(--light-border); }
body.dark-theme .radio-label { border-color: var(--dark-border); }

.radio-label.radio-income:hover { border-color: var(--success-color); }
.radio-label.radio-expense:hover { border-color: var(--danger-color); }

input[type="radio"]#type-income:checked + .radio-label {
    background-color: rgba(46, 204, 113, 0.1);
    border-color: var(--success-color);
    color: var(--success-color);
}
input[type="radio"]#type-expense:checked + .radio-label {
    background-color: rgba(231, 76, 60, 0.1);
    border-color: var(--danger-color);
    color: var(--danger-color);
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideDown {
    from { transform: translateY(-30px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}


@media (max-width: 992px) {
    .charts-container {
        grid-template-columns: 1fr;
    }
    .dashboard {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .transactions-header {
        flex-direction: column;
        align-items: stretch;
    }
    #search-bar { width: 100%; }
    .controls-group { width: 100%; }
    .controls-group .btn { flex-grow: 1; justify-content: center; }

    .list-item {
        grid-template-columns: auto 1fr auto;
        gap: 10px;
        padding: 1rem;
    }
    .list-item-details .date {
        display: none; 
    }
    .list-item-value {
        grid-column: 3 / 4;
        grid-row: 1 / 2;
        text-align: right;
    }
    .list-item-actions {
        grid-column: 1 / 4;
        grid-row: 2 / 3;
        justify-content: flex-end;
        border-top: 1px solid;
        padding-top: 10px;
        margin-top: 10px;
    }
    
    body.light-theme .list-item-actions { border-color: var(--light-border); }
    body.dark-theme .list-item-actions { border-color: var(--dark-border); }
}

@media (max-width: 480px) {
    .form-group-inline { grid-template-columns: 1fr; }
    .modal-content { padding: 1.5rem; }
    .card h1 { font-size: 1.8rem; }
    .btn span { display: none; } 
    #add-transaction-btn span { display: inline; } 
}