:root {
    --color-primary: #0052a5; 
    --color-primary-hover: #003d7a;
    --color-bg: #f4f6f9; 
    --color-surface: #ffffff; 
    --color-text: #212529; 
    --color-text-muted: #6c757d;
    --color-border: #dee2e6;
    --color-border-light: #eaedf1;
    
    --color-focus: #ffb81c; 
    --color-success-bg: #d4edda;
    --color-success-text: #155724;
    --color-error-bg: #f8d7da;
    --color-error-text: #721c24;

    --font-family: 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    --radius-md: 4px; 
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    font-size: 16px; 
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    width: 100%;
}

.container { width: 96%; max-width: 1800px; margin: 0 auto; padding: 0 var(--spacing-md); }
.text-center { text-align: center; }
.text-muted { color: var(--color-text-muted); }
.d-none { display: none !important; }
:focus-visible { outline: 3px solid var(--color-focus); outline-offset: 2px; }

.view-section { flex-grow: 1; display: flex; flex-direction: column; min-height: 100vh; width: 100%; }
.content-section { animation: fadeIn 0.3s ease-in-out; width: 100%; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.login-wrapper { display: flex; flex-direction: column; justify-content: center; align-items: center; flex-grow: 1; padding: var(--spacing-md); }

.sys-header { background-color: var(--color-surface); border-bottom: 1px solid var(--color-border); padding: var(--spacing-sm) 0; box-shadow: 0 2px 4px rgba(0,0,0,0.05); width: 100%; }
.header-container { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--spacing-md); }
.sys-logo { font-size: 1.4rem; color: var(--color-primary); white-space: nowrap; font-weight: 700; }
.sys-nav { display: flex; align-items: center; flex-wrap: wrap; gap: var(--spacing-sm); }
.sys-nav .nav-link { color: var(--color-text); text-decoration: none; font-weight: 500; transition: color 0.2s ease; white-space: nowrap; padding: var(--spacing-sm) var(--spacing-md); font-size: 0.95rem; }
.sys-nav .nav-link:hover, .sys-nav .nav-link.active { color: var(--color-primary); background-color: rgba(0, 82, 165, 0.05); border-radius: var(--radius-md); }

.user-meta { display: flex; flex-direction: row; align-items: center; border-left: 1px solid var(--color-border); padding-left: var(--spacing-lg); margin-left: var(--spacing-md); gap: var(--spacing-md); }
#user-display-name { font-size: 0.8rem; color: var(--color-text-muted); font-weight: 400; }

.sys-main { flex-grow: 1; padding: var(--spacing-xl) 0; width: 100%; }
.page-title { margin-bottom: var(--spacing-xl); }
.page-title h1 { font-size: 1.8rem; color: var(--color-text); margin-bottom: var(--spacing-sm); font-weight: 600; }

.sys-card { background-color: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-md); padding: var(--spacing-xl); margin-bottom: var(--spacing-xl); width: 100%; }
.login-card { width: 100%; max-width: 450px; }
.table-card { padding: var(--spacing-lg) 0; }

.sys-form .form-group { margin-bottom: var(--spacing-md); }
.sys-form label { display: block; margin-bottom: var(--spacing-xs); font-weight: 600; font-size: 0.9rem; }
.sys-form input, .sys-form select, .sys-form textarea { width: 100%; padding: 0.6rem 0.75rem; border: 1px solid var(--color-border); border-radius: var(--radius-md); font-size: 1rem; font-family: var(--font-family); }

.table-responsive { overflow-x: auto; width: 100%; }
.sys-table { width: 100%; border-collapse: collapse; text-align: left; font-size: 0.95rem; }
.sys-table th, .sys-table td { padding: var(--spacing-md) var(--spacing-lg); border-bottom: 1px solid var(--color-border-light); }
.sys-table th { background-color: var(--color-bg); font-weight: 600; color: var(--color-text-muted); text-transform: uppercase; font-size: 0.75rem; letter-spacing: 0.5px; }

.btn { display: inline-flex; justify-content: center; align-items: center; padding: 0.6rem 1.2rem; font-size: 0.9rem; font-weight: 600; border: 1px solid transparent; border-radius: var(--radius-md); cursor: pointer; transition: all 0.2s; }
.btn-primary { background-color: var(--color-primary); color: #ffffff; }
.btn-secondary { background-color: var(--color-surface); color: var(--color-text); border-color: var(--color-border); }
.btn-sm { padding: 0.3rem 0.6rem; font-size: 0.8rem; }

.notification-bar { position: fixed; top: 0; left: 0; width: 100%; padding: var(--spacing-md) var(--spacing-xl); z-index: 9999; display: flex; justify-content: space-between; align-items: center; box-shadow: 0 4px 10px rgba(0,0,0,0.1); }
.notification-error { background-color: #fcecea; color: #b02a37; border-bottom: 3px solid #b02a37; }
.notification-success { background-color: #f0fdf4; color: #15803d; border-bottom: 3px solid #15803d; }

.modal-overlay { position: fixed; top: 0; left: 0; width: 100%; height: 100%; background: rgba(0, 0, 0, 0.5); z-index: 1000; display: flex; justify-content: center; align-items: center; backdrop-filter: blur(2px); }
.modal-content { max-width: 650px; width: 95%; box-shadow: 0 20px 40px rgba(0,0,0,0.2); }

/* --- NOWY SILNIK PDF (PDF.js) --- */
.secure-pdf-container {
    position: relative;
    flex-grow: 1;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: #525659;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 30px 10px;
}
.pdf-page-wrapper {
    position: relative;
    margin-bottom: 25px;
    box-shadow: 0 10px 25px rgba(0,0,0,0.4);
    background-color: white;
}
.pdf-page-wrapper canvas {
    display: block;
}
.watermark-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%) rotate(-40deg);
    font-size: 4rem;
    color: rgba(220, 53, 69, 0.15);
    font-weight: 800;
    pointer-events: none;
    z-index: 10;
    white-space: nowrap;
    user-select: none;
}
.w-100 { width: 100% !important; }