body {
    margin: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    background: #f3f4f6;
}

.site-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem 1.5rem;
    background: #111827;
    color: #f9fafb;
}

.site-header a {
    color: #e5e7eb;
    text-decoration: none;
    margin-left: 1rem;
}

.site-main {
    max-width: 1100px;
    margin: 1.5rem auto;
    padding: 0 1rem 2rem;
}

.card {
    background: #ffffff;
    border-radius: 0.5rem;
    padding: 1rem 1.25rem;
    margin-bottom: 1rem;
    box-shadow: 0 1px 3px rgba(15, 23, 42, 0.08);
}

.card h1,
.card h2,
.card h3 {
    margin-top: 0;
}

.button {
    display: inline-block;
    padding: 0.4rem 0.9rem;
    border-radius: 0.375rem;
    border: none;
    background: #2563eb;
    color: #ffffff;
    cursor: pointer;
    text-decoration: none;
    font-size: 0.9rem;
}
.button--secondary {
    background: #6b7280;
}
.button--danger {
    background: #b91c1c;
}

.list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.list-item {
    padding: 0.5rem 0.5rem;
    border-bottom: 1px solid #e5e7eb;
}

/* Úkoly – stavy */
.task {
    padding: 0.5rem 0.75rem;
    margin-bottom: 0.5rem;
    border-radius: 0.375rem;
    border: 1px solid transparent;
}

/* nové / nezačaté */
.task--new {
    border-color: #3b82f6;
    background-color: #eff6ff;
}

/* čeká na schválení */
.task--pending {
    border-color: #facc15;
    background-color: #fef9c3;
}

/* hotové (schválené i zamítnuté) */
.task--done {
    border-color: #9ca3af;
    background-color: #f3f4f6;
    opacity: 0.7;
}

/* jednoduché form-styly */
form label {
    display: block;
    margin-bottom: 0.25rem;
    font-weight: 500;
}

form input[type="text"],
form input[type="password"],
form textarea,
form select {
    width: 100%;
    box-sizing: border-box;
    padding: 0.35rem 0.5rem;
    border-radius: 0.375rem;
    border: 1px solid #d1d5db;
    margin-bottom: 0.75rem;
}

form textarea {
    min-height: 80px;
}

.class-grid {
	width: 100%;
	border-collapse: collapse;
	margin-top: 0.5rem;
}

.class-grid th,
.class-grid td {
	border: 1px solid #e5e7eb;
	padding: 0.5rem 1.4rem;      /* víc místa horizontálně */
	text-align: center;
	vertical-align: middle;
	min-width: 5rem;
	font-size: 0.9rem;
}

.class-grid thead th {
	background-color: #f9fafb;
	font-weight: 600;
}

.class-grid__cell {
	height: 3.2rem;
}

.class-grid__class {
	text-decoration: none;
	color: #111827;              /* černý text – bez učitele */
}

.class-grid__class--with-teacher {
	color: #9ca3af;              /* světle šedá – s učitelem */
}

.class-grid__name {
	font-weight: 600;
}

.class-grid__year {
	font-size: 0.75rem;
}

.class-grid__teacher {
	font-size: 0.75rem;
}

.class-grid__actions {
	margin-top: 0.25rem;
}

.class-grid__btn {
	display: inline-block;
	padding: 0.15rem 0.45rem;
	font-size: 0.75rem;
	border-radius: 0.25rem;
	border: 1px solid #d1d5db;
	background: #f9fafb;
	text-decoration: none;
	color: #111827;  /* i v šedém řádku zůstane čitelné */
}

/* Zájmové kroužky – seznam pod tabulkou */
.special-classes {
	list-style: none;
	margin: 0.75rem 0 0;
	padding: 0;
}

.special-classes__item {
	padding: 0.25rem 0;
	color: #111827;              /* bez vedoucího */
}

.special-classes__item--with-teacher {
	color: #9ca3af;              /* s vedoucím */
}

.class-grid__top {
	display: flex;
	justify-content: space-between;
	align-items: center;
	gap: 0.5rem;
}


.class-group {
	border-radius: 0.75rem;
	border: 2px solid transparent;
	padding: 0.75rem 1rem;
	margin-bottom: 1rem;
}

.class-group__header {
	display: flex;
	justify-content: space-between;
	align-items: baseline;
	margin-bottom: 0.5rem;
}

.class-group__title {
	font-weight: 600;
}

.class-group__year {
	font-size: 0.8rem;
}

.student-grid {
	display: grid;
	grid-template-columns: repeat(5, minmax(0, 1fr)); /* 5 žáků na řádek */
	gap: 0.5rem;
}

.student-card {
	border-radius: 0.5rem;
	background-color: rgba(255, 255, 255, 0.75);
	padding: 0.4rem 0.5rem;
	font-size: 0.85rem;
	text-align: left;
}

.student-card__name {
	font-weight: 600;
}

.student-card__username {
	font-size: 0.8rem;
	color: #4b5563;
}

.student-card__meta {
	font-size: 0.7rem;
	color: #6b7280;
	margin-top: 0.15rem;
}

.student-card__actions {
	margin-top: 0.25rem;
}

.student-card__actions .button {
	padding: 0.15rem 0.4rem;
	font-size: 0.7rem;
}

/* barevné varianty pro třídy */
.class-group--color-0 {
	border-color: #fecaca;
	background-color: #fef2f2;
}

.class-group--color-1 {
	border-color: #fed7aa;
	background-color: #fff7ed;
}

.class-group--color-2 {
	border-color: #fde68a;
	background-color: #fffbeb;
}

.class-group--color-3 {
	border-color: #bbf7d0;
	background-color: #ecfdf3;
}

.class-group--color-4 {
	border-color: #bae6fd;
	background-color: #eff6ff;
}

.class-group--color-5 {
	border-color: #e9d5ff;
	background-color: #f5f3ff;
}