/* =============================================
   টাকা ব্যবস্থাপনা সিস্টেম - স্টাইলশীট
   সবুজ ও সাদা থিম
   ============================================= */

/* CSS Variables */
:root {
    --primary: #059669;
    --primary-dark: #047857;
    --primary-light: #10b981;
    --primary-bg: #ecfdf5;
    
    --success: #22c55e;
    --success-bg: #dcfce7;
    
    --danger: #ef4444;
    --danger-bg: #fef2f2;
    
    --warning: #f59e0b;
    --warning-bg: #fef3c7;
    
    --info: #3b82f6;
    --info-bg: #eff6ff;
    
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    --font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius: 8px;
    --radius-lg: 12px;
}

/* Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    background-color: var(--gray-50);
    color: var(--gray-800);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* =============================================
   Navbar
   ============================================= */
.navbar {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    color: var(--white);
    border-radius: 50%;
    font-size: 1.25rem;
    font-weight: bold;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    list-style: none;
}

.nav-link {
    display: block;
    padding: 0.5rem 1rem;
    color: var(--gray-600);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s;
}

.nav-link:hover,
.nav-link.active {
    background: var(--primary-bg);
    color: var(--primary);
}

.nav-user {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-left: 1rem;
    padding-left: 1rem;
    border-left: 1px solid var(--gray-200);
}

.user-name {
    color: var(--gray-600);
    font-size: 0.875rem;
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px;
}

.nav-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background: var(--gray-600);
    transition: all 0.3s;
}

/* =============================================
   Main Content
   ============================================= */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* =============================================
   Typography
   ============================================= */
.page-header {
    margin-bottom: 2rem;
}

.page-title {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--gray-800);
    margin-bottom: 0.5rem;
}

.page-subtitle {
    color: var(--gray-500);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--gray-800);
    line-height: 1.3;
}

/* =============================================
   Cards
   ============================================= */
.card {
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    overflow: hidden;
}

.card-header {
    padding: 1.25rem 1.5rem;
    border-bottom: 1px solid var(--gray-100);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-800);
}

.card-body {
    padding: 1.5rem;
}

/* Stats Cards */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow);
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.stat-icon {
    width: 56px;
    height: 56px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    flex-shrink: 0;
}

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

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

.stat-icon.balance {
    background: var(--primary-bg);
    color: var(--primary);
}

.stat-content {
    flex: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0.25rem;
}

.stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--gray-800);
}

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

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

/* =============================================
   Buttons
   ============================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    white-space: nowrap;
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

.btn-success:hover {
    background: #16a34a;
}

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

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

.btn-outline {
    background: transparent;
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
}

.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: var(--primary-bg);
}

.btn-sm {
    padding: 0.375rem 0.75rem;
    font-size: 0.8125rem;
}

.btn-lg {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
}

.btn-block {
    width: 100%;
}

/* =============================================
   Forms
   ============================================= */
.form-group {
    margin-bottom: 1.25rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--gray-700);
}

.form-control {
    width: 100%;
    padding: 0.625rem 0.875rem;
    font-size: 1rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: var(--white);
    color: var(--gray-800);
    transition: border-color 0.2s, box-shadow 0.2s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(5, 150, 105, 0.1);
}

.form-control::placeholder {
    color: var(--gray-400);
}

textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' fill='%236b7280' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.form-hint {
    font-size: 0.8125rem;
    color: var(--gray-500);
    margin-top: 0.25rem;
}

.form-error {
    font-size: 0.8125rem;
    color: var(--danger);
    margin-top: 0.25rem;
}

/* =============================================
   Tables
   ============================================= */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    border-collapse: collapse;
}

.table th,
.table td {
    padding: 0.875rem 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-100);
}

.table th {
    background: var(--gray-50);
    font-weight: 600;
    color: var(--gray-600);
    font-size: 0.8125rem;
    text-transform: uppercase;
    letter-spacing: 0.025em;
}

.table tbody tr:hover {
    background: var(--gray-50);
}

.table .type-income {
    color: var(--success);
    font-weight: 500;
}

.table .type-expense {
    color: var(--danger);
    font-weight: 500;
}

.table .amount {
    font-weight: 600;
    font-family: 'Courier New', monospace;
}

.table-actions {
    display: flex;
    gap: 0.5rem;
}

/* =============================================
   Alerts
   ============================================= */
.alert {
    padding: 1rem 1.25rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    animation: slideDown 0.3s ease;
}

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

.alert-success {
    background: var(--success-bg);
    color: #166534;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: var(--danger-bg);
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background: var(--warning-bg);
    color: #92400e;
    border-left: 4px solid var(--warning);
}

.alert-info {
    background: var(--info-bg);
    color: #1e40af;
    border-left: 4px solid var(--info);
}

.alert-close {
    background: none;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.2s;
}

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

/* =============================================
   Auth Pages
   ============================================= */
.auth-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-bg) 0%, var(--white) 100%);
    padding: 2rem 1rem;
}

.auth-card {
    width: 100%;
    max-width: 420px;
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.auth-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: var(--white);
    padding: 2rem;
    text-align: center;
}

.auth-logo {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    font-size: 2rem;
    margin-bottom: 1rem;
}

.auth-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.auth-subtitle {
    opacity: 0.9;
    font-size: 0.9375rem;
}

.auth-body {
    padding: 2rem;
}

.auth-footer {
    text-align: center;
    padding: 1.5rem 2rem;
    background: var(--gray-50);
    border-top: 1px solid var(--gray-100);
}

.auth-footer a {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.auth-footer a:hover {
    text-decoration: underline;
}

/* =============================================
   Empty States
   ============================================= */
.empty-state {
    text-align: center;
    padding: 3rem 1.5rem;
    color: var(--gray-500);
}

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

.empty-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--gray-600);
    margin-bottom: 0.5rem;
}

.empty-text {
    margin-bottom: 1.5rem;
}

/* =============================================
   Badges
   ============================================= */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.625rem;
    font-size: 0.75rem;
    font-weight: 500;
    border-radius: 9999px;
}

.badge-income {
    background: var(--success-bg);
    color: #166534;
}

.badge-expense {
    background: var(--danger-bg);
    color: #991b1b;
}

/* =============================================
   Footer
   ============================================= */
.footer {
    background: var(--white);
    border-top: 1px solid var(--gray-200);
    padding: 1.5rem 0;
    text-align: center;
    color: var(--gray-500);
    font-size: 0.875rem;
}

/* =============================================
   Utilities
   ============================================= */
.text-center {
    text-align: center;
}

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

.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.flex {
    display: flex;
}

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

.justify-between {
    justify-content: space-between;
}

.gap-1 { gap: 0.5rem; }
.gap-2 { gap: 1rem; }

/* =============================================
   Responsive
   ============================================= */
@media (max-width: 768px) {
    .nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--white);
        flex-direction: column;
        padding: 1rem;
        gap: 0.25rem;
        box-shadow: var(--shadow-md);
        display: none;
    }
    
    .nav-menu.active {
        display: flex;
    }
    
    .nav-user {
        margin-left: 0;
        padding-left: 0;
        border-left: none;
        padding-top: 1rem;
        margin-top: 0.5rem;
        border-top: 1px solid var(--gray-200);
        width: 100%;
        justify-content: space-between;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .stat-card {
        padding: 1.25rem;
    }
    
    .page-title {
        font-size: 1.5rem;
    }
    
    .card-header {
        flex-direction: column;
        gap: 1rem;
        align-items: flex-start;
    }
    
    .table th,
    .table td {
        padding: 0.75rem;
        font-size: 0.875rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .auth-card {
        margin: 0 0.5rem;
    }
    
    .auth-header,
    .auth-body {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.5rem 1rem;
    }
}

/* =============================================
   Export Buttons
   ============================================= */
.export-buttons {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
    flex-wrap: wrap;
}

.export-label {
    font-weight: 500;
    color: var(--gray-600);
    font-size: 0.875rem;
}

.btn-export {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    border-radius: var(--radius);
    border: 1px solid var(--gray-300);
    background: var(--white);
    color: var(--gray-700);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.2s;
}

.btn-export:hover {
    background: var(--gray-50);
    border-color: var(--gray-400);
}

.btn-csv {
    border-color: var(--success);
    color: var(--success);
}

.btn-csv:hover {
    background: var(--success-bg);
    border-color: var(--success);
}

.btn-pdf {
    border-color: var(--danger);
    color: var(--danger);
}

.btn-pdf:hover {
    background: var(--danger-bg);
    border-color: var(--danger);
}

/* =============================================
   Print Styles
   ============================================= */
@media print {
    .navbar,
    .footer,
    .btn,
    .nav-toggle,
    .export-buttons {
        display: none !important;
    }
    
    .card {
        box-shadow: none;
        border: 1px solid var(--gray-300);
    }
    
    body {
        background: white;
    }
}

/* Monthly report month link fix (force override) */
.table .month-link,
.table .month-link:visited {
    color: var(--gray-800) !important;
    text-decoration: none !important;
    font-weight: 500;
}

.table .month-link:hover {
    color: var(--primary);
    text-decoration: none !important;
}