/* Reset + typografia */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-family: "Inter", "Segoe UI", Roboto, sans-serif;
    font-size: 16px;
}

body {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Layout */
header {
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

main {
    padding: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

/* Karty / boxy */
.card, .group-box {
    padding: 1.2rem;
    border-radius: 12px;
    backdrop-filter: blur(10px);
    margin-bottom: 1.5rem;
}

/* Tabele */
table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    border-radius: 10px;
    overflow: hidden;
}

thead {
    font-weight: 600;
}

th, td {
    padding: 0.8rem 1rem;
    text-align: left;
}

tbody tr:hover {
    filter: brightness(1.05);
}

/* Przyciski */
button, .btn {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-weight: 600;
    transition: 0.2s;
}

button:hover, .btn:hover {
    transform: translateY(-2px);
}

/* Linki */
a {
    text-decoration: none;
    font-weight: 600;
}

/* Grid grup */
.groups-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1rem;
}

/* Modal */
.modal {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.55);
    display: flex;
    justify-content: center;
    align-items: center;
}

.modal.hidden {
    display: none;
}

.modal-content {
    padding: 2rem;
    border-radius: 12px;
    width: 400px;
    max-width: 90%;
}


body {
    background: #f5f7fa;
    color: #222;
}

header {
    background: #ffffff;
    border-bottom: 1px solid #ddd;
}

.card, .group-box, .modal-content {
    background: rgba(255, 255, 255, 0.85);
    border: 1px solid #e5e5e5;
}

table {
    background: #ffffff;
}

thead {
    background: #f0f0f0;
}

tbody tr:nth-child(even) {
    background: #fafafa;
}

button, .btn {
    background: #0078ff;
    color: white;
}

button:hover, .btn:hover {
    background: #005fcc;
}

a {
    color: #0078ff;
}

a:hover {
    color: #005fcc;
}

/* Fade-in całej strony */
.fade-in {
    animation: fadeIn 0.6s ease-out;
}

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

/* Delikatny hover-scale dla elementów listy, kart, przycisków */
.hover-scale {
    transition: transform 0.2s ease, filter 0.2s ease;
}

.hover-scale:hover {
    transform: scale(1.03);
    filter: brightness(1.1);
}

/* Animacja dla kart i boxów */
.card, .group-box {
    animation: fadeIn 0.5s ease-out;
}

/* Animacja dla przycisków */
button, .btn {
    transition: transform 0.15s ease, background 0.2s ease;
}

button:hover, .btn:hover {
    transform: scale(1.05);
}