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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    background-color: #f3f4f6;
    color: #111827;
}

.header {
    background-color: white;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1.5rem 2rem;
}

.header h1 {
    font-size: 1.875rem;
    font-weight: bold;
    color: #111827;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 2rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stat-card h3 {
    font-size: 0.875rem;
    color: #6b7280;
    margin-bottom: 0.5rem;
}

.stat-card .amount {
    font-size: 1.5rem;
    font-weight: bold;
    color: #111827;
}

.stat-card .icon {
    width: 3rem;
    height: 3rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
}

.icon.blue { background-color: #dbeafe; color: #3b82f6; }
.icon.green { background-color: #d1fae5; color: #10b981; }
.icon.purple { background-color: #e9d5ff; color: #a855f7; }

.main-card {
    background: white;
    border-radius: 0.5rem;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.tabs {
    display: flex;
    border-bottom: 1px solid #e5e7eb;
}

.tab {
    padding: 1rem 1.5rem;
    cursor: pointer;
    border-bottom: 2px solid transparent;
    font-weight: 500;
    color: #6b7280;
    transition: all 0.2s;
}

.tab:hover {
    color: #374151;
}

.tab.active {
    color: #3b82f6;
    border-bottom-color: #3b82f6;
}

.tab-content {
    padding: 1.5rem;
}

.tab-panel {
    display: none;
}

.tab-panel.active {
    display: block;
}

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

.panel-header h2 {
    font-size: 1.25rem;
    font-weight: 600;
}

.btn {
    padding: 0.5rem 1rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background-color: #3b82f6;
    color: white;
}

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

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

thead {
    background-color: #f9fafb;
}

th {
    padding: 0.75rem 1.5rem;
    text-align: left;
    font-size: 0.75rem;
    font-weight: 500;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

td {
    padding: 1rem 1.5rem;
    border-top: 1px solid #e5e7eb;
}

.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.badge.green {
    background-color: #d1fae5;
    color: #065f46;
}

.badge.red {
    background-color: #fee2e2;
    color: #991b1b;
}

.badge.yellow {
    background-color: #fef3c7;
    color: #92400e;
}

.amount-positive {
    color: #10b981;
    font-weight: 600;
}

.amount-negative {
    color: #ef4444;
    font-weight: 600;
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 1000;
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: white;
    border-radius: 0.5rem;
    padding: 2rem;
    width: 90%;
    max-width: 500px;
}

.modal-header {
    margin-bottom: 1.5rem;
}

.modal-header h2 {
    font-size: 1.5rem;
    font-weight: 600;
}

.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #374151;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.5rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.modal-footer {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 1.5rem;
}

.btn-secondary {
    background-color: #e5e7eb;
    color: #374151;
}

.btn-secondary:hover {
    background-color: #d1d5db;
}

.loading {
    text-align: center;
    padding: 2rem;
    color: #6b7280;
}

.filter-bar {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: center;
}

.filter-bar select,
.filter-bar input {
    padding: 0.5rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.filter-bar .btn-filter {
    padding: 0.5rem 1rem;
    background-color: #6b7280;
    color: white;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 0.875rem;
}

.filter-bar .btn-filter:hover {
    background-color: #4b5563;
}

.teklif-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.form-section {
    margin-bottom: 2rem;
}

.form-section h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: #374151;
    border-bottom: 2px solid #e5e7eb;
    padding-bottom: 0.5rem;
}

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

.urun-satir {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr 1fr auto;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
    align-items: center;
}

.urun-satir input {
    padding: 0.5rem 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 0.375rem;
    font-size: 0.875rem;
}

.btn-remove {
    width: 32px;
    height: 32px;
    background-color: #ef4444;
    color: white;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 1.25rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-remove:hover {
    background-color: #dc2626;
}

.form-footer {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 2px solid #e5e7eb;
}

@media (max-width: 768px) {
    .teklif-form-grid {
        grid-template-columns: 1fr;
    }
    
    .urun-satir {
        grid-template-columns: 1fr;
    }
}

.btn-delete,
.btn-edit {
    padding: 0.375rem 0.75rem;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-size: 1rem;
    transition: all 0.2s;
    margin: 0 0.25rem;
}

.btn-delete {
    background-color: #fee2e2;
    color: #991b1b;
}

.btn-delete:hover {
    background-color: #fecaca;
}

.btn-edit {
    background-color: #dbeafe;
    color: #1e40af;
}

.btn-edit:hover {
    background-color: #bfdbfe;
}

.logout-btn {
    position: absolute;
    top: 1.5rem;
    right: 2rem;
    padding: 0.5rem 1rem;
    background-color: #ef4444;
    color: white;
    border: none;
    border-radius: 0.375rem;
    cursor: pointer;
    font-weight: 500;
    transition: all 0.2s;
}

.logout-btn:hover {
    background-color: #dc2626;
}