/* assets/css/style.css - Modern Açık Tema & Ön Muhasebe Tasarım Sistemi */

:root {
    --primary: #4f46e5;
    --primary-hover: #4338ca;
    --primary-light: #eef2ff;
    --primary-border: #c7d2fe;
    
    --success: #10b981;
    --success-light: #ecfdf5;
    --success-border: #a7f3d0;
    --success-text: #065f46;

    --danger: #ef4444;
    --danger-light: #fef2f2;
    --danger-border: #fecaca;
    --danger-text: #991b1b;

    --warning: #f59e0b;
    --warning-light: #fffbeb;
    --warning-border: #fde68a;
    --warning-text: #92400e;

    --info: #0284c7;
    --info-light: #f0f9ff;
    --info-border: #bae6fd;
    --info-text: #075985;

    --bg-page: #f8fafc;
    --bg-surface: #ffffff;
    --bg-subtle: #f1f5f9;

    --border: #e2e8f0;
    --border-dark: #cbd5e1;

    --text-main: #0f172a;
    --text-muted: #64748b;
    --text-light: #94a3b8;

    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.06), 0 2px 4px -2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.06), 0 4px 6px -4px rgba(0, 0, 0, 0.03);
    --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.03);

    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --radius-full: 9999px;

    --sidebar-width: 260px;
    --navbar-height: 64px;
    --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.5;
    font-size: 14px;
    -webkit-font-smoothing: antialiased;
}

/* Layout */
.app-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    z-index: 40;
    transition: var(--transition);
}

.sidebar-header {
    height: var(--navbar-height);
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 0 20px;
    border-bottom: 1px solid var(--border);
}

.sidebar-logo-icon {
    width: 36px;
    height: 36px;
    background: linear-gradient(135deg, var(--primary) 0%, #312e81 100%);
    color: white;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 18px;
    box-shadow: 0 4px 8px rgba(79, 70, 229, 0.3);
}

.sidebar-brand {
    font-size: 15px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.3px;
    line-height: 1.2;
}

.sidebar-brand small {
    display: block;
    font-size: 11px;
    font-weight: 500;
    color: var(--text-muted);
}

.sidebar-nav {
    flex: 1;
    overflow-y: auto;
    padding: 16px 12px;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.nav-section-title {
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-light);
    letter-spacing: 0.6px;
    padding: 12px 10px 6px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 12px;
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--radius-sm);
    transition: var(--transition);
}

.nav-item:hover {
    background: var(--bg-subtle);
    color: var(--primary);
}

.nav-item.active {
    background: var(--primary-light);
    color: var(--primary);
    font-weight: 600;
}

.nav-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

.main-wrapper {
    flex: 1;
    margin-left: var(--sidebar-width);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* Navbar */
.navbar {
    height: var(--navbar-height);
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    position: sticky;
    top: 0;
    z-index: 30;
}

.navbar-left {
    display: flex;
    align-items: center;
    gap: 16px;
}

.company-selector-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    background: var(--bg-subtle);
    border: 1px solid var(--border);
    padding: 6px 12px;
    border-radius: var(--radius-full);
    font-size: 13px;
    font-weight: 600;
    color: var(--text-main);
}

.company-selector-badge form select {
    background: transparent;
    border: none;
    font-size: 13px;
    font-weight: 600;
    color: var(--primary);
    cursor: pointer;
    outline: none;
}

.navbar-right {
    display: flex;
    align-items: center;
    gap: 16px;
}

.user-profile-menu {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-main);
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: #e2e8f0;
    color: var(--text-main);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 13px;
}

/* Content Area */
.content-area {
    flex: 1;
    padding: 24px;
}

.page-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 16px;
}

.page-title {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.page-subtitle {
    font-size: 13px;
    color: var(--text-muted);
    margin-top: 2px;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* Cards */
.card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    margin-bottom: 24px;
}

.card-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--text-main);
}

.card-body {
    padding: 20px;
}

/* KPI / Stats Grid */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}

.stat-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px 20px;
    box-shadow: var(--shadow-sm);
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow);
    border-color: var(--border-dark);
}

.stat-info .stat-label {
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.5px;
}

.stat-info .stat-value {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
    margin-top: 6px;
}

.stat-info .stat-sub {
    font-size: 12px;
    color: var(--text-muted);
    margin-top: 4px;
}

.stat-icon {
    width: 44px;
    height: 44px;
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.income { background: var(--success-light); color: var(--success); }
.stat-icon.expense { background: var(--danger-light); color: var(--danger); }
.stat-icon.balance { background: var(--primary-light); color: var(--primary); }
.stat-icon.warning { background: var(--warning-light); color: var(--warning); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 9px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    font-weight: 600;
    text-decoration: none;
    border: 1px solid transparent;
    cursor: pointer;
    transition: var(--transition);
    line-height: 1;
}

.btn-sm {
    padding: 6px 10px;
    font-size: 12px;
    border-radius: var(--radius-sm);
}

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

.btn-secondary {
    background: var(--bg-surface);
    color: var(--text-main);
    border-color: var(--border);
}
.btn-secondary:hover {
    background: var(--bg-subtle);
    border-color: var(--border-dark);
}

.btn-success {
    background: var(--success);
    color: white;
}
.btn-success:hover {
    background: #059669;
}

.btn-danger {
    background: var(--danger);
    color: white;
}
.btn-danger:hover {
    background: #dc2626;
}

.btn-warning {
    background: var(--warning);
    color: white;
}
.btn-warning:hover {
    background: #d97706;
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    border-radius: var(--radius-full);
    font-size: 11px;
    font-weight: 600;
    line-height: 1;
}

.badge-success { background: var(--success-light); color: var(--success-text); border: 1px solid var(--success-border); }
.badge-danger { background: var(--danger-light); color: var(--danger-text); border: 1px solid var(--danger-border); }
.badge-warning { background: var(--warning-light); color: var(--warning-text); border: 1px solid var(--warning-border); }
.badge-info { background: var(--info-light); color: var(--info-text); border: 1px solid var(--info-border); }
.badge-secondary { background: var(--bg-subtle); color: var(--text-muted); border: 1px solid var(--border); }
.badge-primary { background: var(--primary-light); color: var(--primary); border: 1px solid var(--primary-border); }

/* Alerts */
.alert {
    padding: 14px 16px;
    border-radius: var(--radius);
    font-size: 13px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 12px;
}

.alert-success { background: var(--success-light); border: 1px solid var(--success-border); color: var(--success-text); }
.alert-danger { background: var(--danger-light); border: 1px solid var(--danger-border); color: var(--danger-text); }
.alert-warning { background: var(--warning-light); border: 1px solid var(--warning-border); color: var(--warning-text); }
.alert-info { background: var(--info-light); border: 1px solid var(--info-border); color: var(--info-text); }

/* Tables */
.table-responsive {
    width: 100%;
    overflow-x: auto;
}

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

.table th {
    background: var(--bg-subtle);
    color: var(--text-muted);
    font-size: 11px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    white-space: nowrap;
}

.table td {
    padding: 13px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 13px;
    color: var(--text-main);
    vertical-align: middle;
}

.table tr:last-child td {
    border-bottom: none;
}

.table tr:hover td {
    background: rgba(241, 245, 249, 0.5);
}

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

/* Forms & Inputs */
.form-group {
    margin-bottom: 16px;
}

.form-label {
    display: block;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 6px;
}

.form-control, .form-select {
    width: 100%;
    padding: 9px 12px;
    font-size: 13px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-surface);
    color: var(--text-main);
    outline: none;
    transition: var(--transition);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

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

.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

/* Modals */
.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(15, 23, 42, 0.45);
    backdrop-filter: blur(4px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 50;
    padding: 20px;
}

.modal-backdrop.show {
    display: flex;
}

.modal-dialog {
    background: var(--bg-surface);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 540px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border);
    animation: modalIn 0.2s ease-out;
}

@keyframes modalIn {
    from { opacity: 0; transform: scale(0.96) translateY(-8px); }
    to { opacity: 1; transform: scale(1) translateY(0); }
}

.modal-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.modal-title {
    font-size: 16px;
    font-weight: 700;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
}

.modal-close:hover {
    background: var(--bg-subtle);
    color: var(--text-main);
}

.modal-body {
    padding: 20px;
}

.modal-footer {
    padding: 14px 20px;
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 10px;
    background: var(--bg-subtle);
    border-bottom-left-radius: var(--radius-lg);
    border-bottom-right-radius: var(--radius-lg);
}

/* Period closing cards */
.period-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.period-card {
    background: var(--bg-surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 18px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: var(--transition);
}

.period-card.closed {
    border-color: var(--danger-border);
    background: #fffafa;
}

.period-card.open {
    border-color: var(--success-border);
    background: #fafdfc;
}

/* Print Styles */
@media print {
    .sidebar, .navbar, .page-actions, .btn, .modal-backdrop {
        display: none !important;
    }
    .main-wrapper {
        margin-left: 0 !important;
    }
    .content-area {
        padding: 0 !important;
    }
    .card {
        border: none !important;
        box-shadow: none !important;
    }
}

/* Responsive */
@media (max-width: 900px) {
    .sidebar {
        transform: translateX(-100%);
    }
    .sidebar.open {
        transform: translateX(0);
    }
    .main-wrapper {
        margin-left: 0;
    }
}