/* Modern PHP Muhasebe Sistemi - CSS */
/* Renk Teması: Beyaz ve Mavi */

:root {
    --primary-color: #3498db;
    --primary-dark: #2980b9;
    --primary-light: #5dade2;
    --secondary-color: #95a5a6;
    --success-color: #2ecc71;
    --danger-color: #e74c3c;
    --warning-color: #f39c12;
    --dark-color: #2c3e50;
    --light-color: #ecf0f1;
    --white: #ffffff;
    --text-color: #2c3e50;
    --text-muted: #7f8c8d;
    --border-color: #dfe6e9;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 4px 16px rgba(0, 0, 0, 0.15);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #3498db 0%, #2980b9 100%);
    background-attachment: fixed;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
}

/* Login Page */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
}

.login-container {
    width: 100%;
    max-width: 450px;
}

.login-box {
    background: var(--white);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    padding: 40px;
}

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

.login-header h1 {
    color: var(--primary-color);
    font-size: 28px;
    margin-bottom: 10px;
}

.login-header p {
    color: var(--text-muted);
    font-size: 14px;
}

.login-form .form-group {
    margin-bottom: 20px;
}

.login-footer {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

.demo-info {
    background: var(--light-color);
    padding: 15px;
    border-radius: 8px;
    font-size: 13px;
    color: var(--text-color);
    text-align: center;
}

.demo-info code {
    background: var(--white);
    padding: 2px 8px;
    border-radius: 4px;
    font-family: 'Courier New', monospace;
    color: var(--primary-color);
    font-weight: 600;
}

/* Header */
.main-header {
    background: var(--white);
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 70px;
}

.header-left {
    display: flex;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--dark-color);
    font-weight: 700;
    font-size: 20px;
}

.logo-icon {
    font-size: 28px;
}

.logo-text {
    color: var(--primary-color);
}

.header-nav {
    display: flex;
    gap: 10px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    text-decoration: none;
    color: var(--text-color);
    border-radius: 8px;
    transition: all 0.3s;
    font-weight: 500;
}

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

.nav-link.active {
    background: var(--primary-color);
    color: var(--white);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-menu {
    position: relative;
}

.user-button {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--light-color);
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--text-color);
    transition: all 0.3s;
}

.user-button:hover {
    background: var(--primary-light);
    color: var(--white);
}

.user-icon {
    font-size: 20px;
}

.dropdown-arrow {
    font-size: 10px;
}

.user-dropdown {
    position: absolute;
    top: 100%;
    right: 0;
    margin-top: 10px;
    background: var(--white);
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    min-width: 200px;
    display: none;
    overflow: hidden;
}

.user-dropdown.show {
    display: block;
}

.dropdown-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 20px;
    text-decoration: none;
    color: var(--text-color);
    transition: all 0.3s;
}

.dropdown-item:hover {
    background: var(--light-color);
    color: var(--primary-color);
}

/* Container */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 30px 20px;
}

/* Page Header */
.page-header {
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.page-header h1 {
    font-size: 32px;
    color: var(--white);
    margin-bottom: 5px;
}

.page-header p {
    color: rgba(255, 255, 255, 0.9);
    font-size: 16px;
}

.back-link {
    display: inline-block;
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    margin-bottom: 10px;
    font-size: 14px;
    transition: all 0.3s;
}

.back-link:hover {
    color: var(--white);
}

/* Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
}

.stat-card {
    background: var(--white);
    border-radius: 12px;
    padding: 25px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    font-size: 48px;
}

.stat-content h3 {
    font-size: 14px;
    color: var(--text-muted);
    margin-bottom: 8px;
    font-weight: 600;
    text-transform: uppercase;
}

.stat-value {
    font-size: 28px;
    font-weight: 700;
    color: var(--dark-color);
}

.stat-period {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 5px;
}

.stat-income {
    border-left: 4px solid var(--success-color);
}

.stat-expense {
    border-left: 4px solid var(--danger-color);
}

.stat-profit {
    border-left: 4px solid var(--primary-color);
}

.stat-loss {
    border-left: 4px solid var(--danger-color);
}

/* Section */
.section {
    background: var(--white);
    border-radius: 12px;
    padding: 30px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.section-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 25px;
}

.section-header h2 {
    font-size: 24px;
    color: var(--dark-color);
}

/* Companies Grid */
.companies-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
}

.company-card {
    background: var(--white);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s;
}

.company-card:hover {
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

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

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

.company-actions {
    display: flex;
    gap: 5px;
}

.company-stats {
    margin-bottom: 15px;
}

.company-stat {
    display: flex;
    justify-content: space-between;
    padding: 8px 0;
    border-bottom: 1px solid var(--light-color);
}

.company-stat:last-child {
    border-bottom: none;
}

.company-stat .label {
    color: var(--text-muted);
    font-size: 14px;
}

.company-stat .value {
    font-weight: 600;
    font-size: 14px;
}

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

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

.company-stat .value.profit {
    color: var(--primary-color);
}

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

/* Date Selector */
.date-selector {
    background: var(--white);
    border-radius: 12px;
    padding: 20px;
    box-shadow: var(--shadow);
    margin-bottom: 30px;
}

.date-form {
    display: flex;
    gap: 20px;
    align-items: center;
    flex-wrap: wrap;
}

.form-group-inline {
    display: flex;
    align-items: center;
    gap: 10px;
}

.form-group-inline label {
    font-weight: 600;
    color: var(--text-color);
    font-size: 14px;
}

.form-group-inline select {
    padding: 10px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: all 0.3s;
}

.form-group-inline select:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 30px;
}

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

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

.data-table thead {
    background: var(--primary-color);
    color: var(--white);
}

.data-table th {
    padding: 15px;
    text-align: left;
    font-weight: 600;
    font-size: 14px;
}

.data-table td {
    padding: 15px;
    border-bottom: 1px solid var(--border-color);
    font-size: 14px;
}

.data-table tbody tr:hover {
    background: var(--light-color);
}

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

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

.text-success {
    color: var(--success-color);
}

.text-danger {
    color: var(--danger-color);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
    text-align: center;
    justify-content: center;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

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

.btn-primary:hover {
    background: var(--primary-dark);
}

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

.btn-secondary:hover {
    background: #7f8c8d;
}

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

.btn-success:hover {
    background: #27ae60;
}

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

.btn-danger:hover {
    background: #c0392b;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    background: none;
    border: none;
    font-size: 18px;
    cursor: pointer;
    padding: 5px;
    transition: transform 0.3s;
}

.btn-icon:hover {
    transform: scale(1.2);
}

/* Badge */
.badge {
    display: inline-block;
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}

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

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

/* Form */
.form-group {
    margin-bottom: 20px;
}

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

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    font-family: inherit;
    transition: all 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.1);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.modal-content {
    background: var(--white);
    border-radius: 12px;
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
}

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 25px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 22px;
    color: var(--dark-color);
}

.modal-close {
    background: none;
    border: none;
    font-size: 28px;
    cursor: pointer;
    color: var(--text-muted);
    transition: color 0.3s;
}

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

.modal-content form {
    padding: 25px;
}

.modal-footer {
    display: flex;
    gap: 10px;
    justify-content: flex-end;
    padding: 20px 25px;
    border-top: 1px solid var(--border-color);
}

/* Alert */
.alert {
    padding: 15px 20px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
}

.alert-error {
    background: #fadbd8;
    color: #c0392b;
    border-left: 4px solid var(--danger-color);
}

.alert-success {
    background: #d5f4e6;
    color: #27ae60;
    border-left: 4px solid var(--success-color);
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

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

.empty-state p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

/* Responsive */
@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
        height: auto;
        padding: 15px 20px;
    }
    
    .header-nav {
        order: 3;
        width: 100%;
        margin-top: 15px;
    }
    
    .stats-grid {
        grid-template-columns: 1fr;
    }
    
    .companies-grid {
        grid-template-columns: 1fr;
    }
    
    .action-buttons {
        flex-direction: column;
    }
    
    .action-buttons .btn {
        width: 100%;
    }
    
    .date-form {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-group-inline {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-group-inline select {
        width: 100%;
    }
}