/* ==================== GLOBAL STYLES ==================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary: #6366f1;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --info: #3b82f6;
    --dark: #1f2937;
    --light: #f3f4f6;
    --border: #e5e7eb;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--dark);
    min-height: 100vh;
}

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

/* ==================== AUTH STYLES ==================== */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
    padding: 20px;
}

.auth-card {
    background: white;
    border-radius: 12px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    padding: 40px;
    width: 100%;
    max-width: 400px;
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    color: var(--primary);
    font-size: 28px;
    margin-bottom: 5px;
}

.auth-header p {
    color: #6b7280;
    font-size: 14px;
}

.form-group {
    margin-bottom: 15px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark);
    font-size: 14px;
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.signup-link {
    text-align: center;
    margin-top: 15px;
    font-size: 13px;
}

.signup-link a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 600;
    cursor: pointer;
}

.signup-link a:hover {
    text-decoration: underline;
}

.error {
    color: var(--danger);
    margin-top: 10px;
    text-align: center;
    font-size: 13px;
    min-height: 20px;
}

.hidden {
    display: none !important;
}

/* ==================== BUTTONS ==================== */
.btn {
    padding: 10px 16px;
    border: none;
    border-radius: 6px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    justify-content: center;
}

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

.btn-primary:hover {
    background: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

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

.btn-success:hover {
    background: #059669;
}

.btn-danger {
    background: var(--danger);
    color: white;
    width: auto;
}

.btn-danger:hover {
    background: #dc2626;
}

.btn-info {
    background: var(--info);
    color: white;
    width: auto;
}

.btn-info:hover {
    background: #2563eb;
}

/* ==================== NAVBAR ==================== */
.navbar {
    background: white;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    padding: 15px 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}

.navbar-brand h1 {
    color: var(--primary);
    font-size: 22px;
    margin: 0;
}

.navbar-menu {
    display: flex;
    gap: 20px;
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: #6b7280;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 6px;
    transition: all 0.3s;
    cursor: pointer;
}

.nav-link:hover {
    color: var(--primary);
    background: var(--light);
}

.nav-link.active {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

/* ==================== APP LAYOUT ==================== */
#app {
    padding-bottom: 40px;
}

.view {
    padding: 30px 0;
}

.view h2 {
    font-size: 24px;
    margin-bottom: 20px;
    color: white;
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ==================== CARDS & GRID ==================== */
.card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    margin-bottom: 20px;
}

.card h3 {
    font-size: 16px;
    margin-bottom: 15px;
    color: var(--dark);
    display: flex;
    align-items: center;
    gap: 8px;
}

.accounts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 20px;
}

.account-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    border-left: 4px solid var(--primary);
}

.account-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.account-card-header h3 {
    margin: 0;
    flex: 1;
    font-size: 16px;
    color: var(--dark);
}

.account-card-header .btn-small {
    background: var(--danger);
    padding: 6px 8px;
    font-size: 12px;
    flex-shrink: 0;
}

.account-card h3 {
    font-size: 14px;
    color: #6b7280;
    margin-bottom: 10px;
    margin: 0;
}

.account-balance {
    font-size: 24px;
    font-weight: 700;
    color: var(--primary);
    margin: 10px 0 0 0;
}

.total-card {
    background: linear-gradient(135deg, var(--primary) 0%, #764ba2 100%);
    color: white;
    border-radius: 12px;
    padding: 30px;
    text-align: center;
    margin-bottom: 20px;
}

.total-card h3 {
    font-size: 16px;
    margin-bottom: 10px;
    opacity: 0.9;
}

.total-amount {
    font-size: 36px;
    font-weight: 700;
}

/* ==================== FORMS ==================== */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
    margin-bottom: 15px;
}

.form-group {
    margin-bottom: 0;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

/* ==================== TRANSACTIONS ==================== */
.filter-group {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
}

.filter-group input,
.filter-group select,
.filter-group button {
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
}

.transactions-table {
    overflow-x: auto;
}

.transaction-item {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    gap: 15px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border);
    align-items: center;
    font-size: 14px;
}

.transaction-item:last-child {
    border-bottom: none;
}

.transaction-item strong {
    color: var(--dark);
}

.transaction-date {
    color: #6b7280;
}

.transaction-credit {
    color: var(--success);
    font-weight: 600;
}

.transaction-debit {
    color: var(--danger);
    font-weight: 600;
}

/* ==================== BUDGETS ==================== */
.budgets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
}

.budget-card {
    background: white;
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

.budget-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

.budget-header h4 {
    font-size: 16px;
    color: var(--dark);
}

.budget-progress {
    width: 100%;
    height: 8px;
    background: var(--light);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: 10px;
}

.budget-bar {
    height: 100%;
    background: var(--success);
    transition: width 0.3s;
}

.budget-bar.warning {
    background: var(--warning);
}

.budget-bar.danger {
    background: var(--danger);
}

.budget-stats {
    font-size: 13px;
    color: #6b7280;
    display: flex;
    justify-content: space-between;
}

/* ==================== CHARTS ==================== */
.chart-container {
    position: relative;
    height: 300px;
    margin-top: 20px;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .navbar {
        flex-direction: column;
        gap: 15px;
    }

    .navbar-menu {
        width: 100%;
        flex-wrap: wrap;
    }

    .auth-card {
        padding: 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .transaction-item {
        grid-template-columns: 1fr;
        gap: 5px;
    }

    .view h2 {
        font-size: 20px;
    }

    .accounts-grid {
        grid-template-columns: 1fr;
    }

    .navbar-menu {
        gap: 8px;
    }

    .nav-link, .btn {
        font-size: 12px;
        padding: 6px 10px;
    }

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

    .filter-group {
        flex-direction: column;
    }

    .transaction-actions {
        flex-direction: column;
        gap: 5px;
    }

    .btn-small {
        font-size: 11px;
        padding: 4px 8px;
    }

    .modal-content {
        width: 95%;
    }
}

/* ==================== MODALS ==================== */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: white;
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px;
    border-bottom: 1px solid var(--border);
}

.modal-header h3 {
    font-size: 18px;
    color: var(--dark);
}

.modal-close {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    color: #999;
}

.modal-close:hover {
    color: var(--dark);
}

.modal-content form {
    padding: 20px;
}

.modal-footer {
    padding: 20px;
    border-top: 1px solid var(--border);
    display: flex;
    gap: 10px;
    justify-content: flex-end;
}

/* ==================== DASHBOARD IMPROVEMENTS ==================== */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 15px;
}

.month-picker input {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 14px;
}

.empty-state {
    text-align: center;
    padding: 40px;
    background: linear-gradient(135deg, #667eea15, #764ba215);
    border: 2px dashed var(--primary);
    border-radius: 12px;
    margin: 20px 0;
}

.empty-state h3 {
    color: var(--primary);
    font-size: 20px;
    margin-bottom: 10px;
}

.empty-state p {
    color: #6b7280;
    margin-bottom: 20px;
}

.empty-state .form-row {
    justify-content: center;
}

.empty-state .form-group {
    flex: 0 1 300px;
}

.transaction-comment {
    display: none;
}

.transaction-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px;
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
}

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

.btn-small {
    padding: 6px 10px;
    font-size: 12px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: var(--primary);
    color: white;
    transition: opacity 0.3s;
}

.btn-small:hover {
    opacity: 0.8;
}

.btn-small.btn-warning {
    background: var(--warning);
}

.btn-small.btn-danger {
    background: var(--danger);
}

/* ==================== RESPONSIVE IMPROVEMENTS ==================== */
.filter-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    align-items: center;
}

.filter-group input,
.filter-group select,
.filter-group button {
    flex: 1;
    min-width: 150px;
}

@media (max-width: 480px) {
    .filter-group {
        flex-direction: column;
    }

    .filter-group input,
    .filter-group select,
    .filter-group button {
        width: 100%;
        min-width: 100%;
    }

    .dashboard-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .transaction-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .transaction-actions {
        width: 100%;
        margin-left: 0;
    }
}