:root {
    --main-color: #000;
    --background-color: #fff;
    --accent-color: #000;
    --text-color: #0f172a;
    --muted-color: #64748b;
    --card-color: #ffffff;
    --border-color: #e2e8f0;
    --shadow-color: rgba(15, 23, 42, 0.08);
}

* { box-sizing: border-box; }

html, body {
    height: 100%;
    margin: 0;
}

body {
    background-color: var(--background-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    font-family: "Manrope", "Avenir Next", "Helvetica Neue", sans-serif;
    line-height: 1.6;
    font-size: 17px;
}

a { color: inherit; }

h1, h2, h3 {
    line-height: 1.2;
    margin: 0 0 12px;
    color: var(--text-color);
}

h2 {
    font-size: 2.2rem;
    text-align: center;
    margin: 28px 0 20px;
}

p {
    color: var(--muted-color);
    margin-block-start: 0.5em;
    margin-block-end: 0.5em;
    font-size: 1rem;
}

#home {
    flex: 1;
    width: min(980px, 100%);
    margin: 0 auto;
    padding: 0 20px 120px;
}

#footer {
    text-align: center;
    font-size: 0.9em;
    color: var(--muted-color);
    padding: 16px 10px 28px;
    border-top: 1px solid var(--border-color);
}

.item-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.item {
    display: flex;
    align-items: center;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background-color: var(--card-color);
    cursor: pointer;
    transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
    user-select: none;
    gap: 12px;
    box-shadow: 0 8px 18px var(--shadow-color);
}

.item:hover {
    transform: translateY(-1px);
    border-color: var(--accent-color);
    box-shadow: 0 10px 22px var(--shadow-color);
}

.item input[type="checkbox"] {
    accent-color: var(--accent-color);
    width: 1em;
    height: 1em;
    pointer-events: none;
}

.text {
    display: flex;
    flex-direction: column;
    flex: 1;
    gap: 4px;
}

.top-row {
    display: flex;
    justify-content: space-between;
    width: 100%;
}

.titel {
    font-weight: 600;
}

.dauer {
    font-weight: 500;
    color: var(--muted-color);
    text-align: right;
}

.beschreibung {
    display: block;
    font-size: 0.9em;
    color: var(--muted-color);
    width: 100%;
}

/* Mitarbeiter-Dropdown */
.mitarbeiter-select {
    width: 260px;
    padding: 12px 16px;
    font-size: 1.05rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background-color: var(--card-color);
    color: var(--text-color);
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 18px var(--shadow-color);
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.mitarbeiter-select:hover {
    border-color: var(--accent-color);
    box-shadow: 0 10px 22px var(--shadow-color);
}

.mitarbeiter-select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.termin-button {
    display: flex !important;
    margin: 10px 20px 0px 20px !important;
    text-align: center;
    min-width: 115px;
}

.nav-button {
    display: flex !important;
    margin: 10px 20px 0px 20px !important;
}

.checkout-button {
    margin: 5px auto !important;
}

.rounded-button {
    display: block;
    margin: 20px auto;
    padding: 0.75rem 1.5rem;
    background: var(--main-color);
    color: #ffffff;
    border: none;
    border-radius: 10px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 16px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
    text-align: -webkit-center;
}

.rounded-button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px var(--shadow-color);
    filter: brightness(1.03);
}

.rounded-button:active {
    transform: translateY(0);
}

.calendar {
    background: var(--card-color);
    border: 1px solid var(--border-color);
    border-radius: 14px;
    padding: 16px;
    box-shadow: 0 12px 24px var(--shadow-color);
    margin: 0 auto;
    width: min(520px, 100%);
}

.calendar-header {
    display: flex;
    justify-content: center;
    align-items: center;
    margin-bottom: 10px;
}

.calendar-header button {
    padding: 10px 15px;
    background: var(--main-color);
    color: #ffffff;
    border: none;
    border-radius: 10px;
    font-size: 1.05rem;
    font-weight: 600;
    cursor: pointer;
    box-shadow: 0 8px 16px var(--shadow-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease, filter 0.2s ease;
}

.calendar-header button:hover {
    transform: translateY(-1px);
    box-shadow: 0 10px 22px var(--shadow-color);
    filter: brightness(1.03);
}

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 40px);
    gap: 5px;
    justify-content: center;
    min-height: 310px;
}

.day, .weekday {
    width: 40px;
    height: 40px;
    line-height: 40px;
    border-radius: 6px;
}

.weekday {
    font-weight: 600;
    color: var(--muted-color);
}

.day {
    cursor: pointer;
    background: #f1f5f9;
    color: var(--text-color);
}

.day:hover {
    background: #e2e8f0;
}

.day.selected {
    background: var(--accent-color);
    color: #ffffff;
    font-weight: 600;
}

#dayTerminePanel {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 0.5rem;
    justify-items: center;
    margin-top: 1rem;
}

#newContent {
    justify-items: center;
}

.disabled {
    background: #e2e8f0;
    color: #94a3b8;
    pointer-events: none;
}

.has-appointment {
    background-color: var(--accent-color);
    color: #ffffff;
    font-weight: 600;
}

#cartPanel {
    position: fixed;
    left: 50%;
    width: min(1000px, 96%);
    margin: 0 auto;
    background-color: var(--card-color);
    box-shadow: 0 -12px 28px var(--shadow-color);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: bottom 0.3s ease-in-out;
    padding: 1rem;
    z-index: 10000;
    display: none;
    transform: translateX(-50%);
}

#cartPanel.active {
    display: block;
    bottom: 0;
}

.cart-header {
    font-size: 1.15rem;
    font-weight: 600;
    margin-bottom: .5rem;
}

#cartItems {
    max-height: 77px;
    overflow-y: auto;
    margin-bottom: 1rem;
    list-style: none;
    padding-inline-start: 0px;
}

.cart-summary {
    font-weight: 600;
    margin-bottom: 1rem;
}

.cart-summary span {
    display: block;
}

.cart-item {
    display: block;
    justify-content: space-between;
    align-items: center;
    font-size: 0.95rem;
    padding: 0 0 2px 0;
    color: var(--muted-color);
}

.remove-btn {
    background: none;
    border: none;
    color: #cc0000;
    font-size: 1rem;
    cursor: pointer;
}

#loadingOverlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.8);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: all;
}

.spinner {
    border: 8px solid #f3f4f6;
    border-top: 8px solid var(--accent-color);
    border-radius: 50%;
    width: 60px;
    height: 60px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* =========================
   SUMMARY / CHECKOUT
   ========================= */
.summary-box {
    max-width: 350px;
    background: #f8fafc;
    padding: 1rem;
    border-radius: 12px;
    margin-bottom: 1.5rem;
    border: 1px solid var(--border-color);
}

.summary-box h3 {
    margin-top: 0;
}

.highlight {
    background: #fff7ed;
    border-left: 6px solid #f59e0b;
}

.terminText {
    font-size: 1.15rem;
    font-weight: 600;
}

.checkout-item {
    padding: 4px 0;
    font-size: 0.95rem;
}

/* =========================
   INPUTS
   ========================= */
.styled-input {
    width: 92%;
    padding: 12px;
    font-size: 1.05rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin-bottom: 0.8rem;
    background: var(--card-color);
}

.styled-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.15);
}

.checkboxRow {
    display: flex;
    gap: 0.5rem;
    align-items: center;
    margin-top: .5rem;
}

.botRow {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.botQuestion {
    font-size: 1.2rem;
    font-weight: 600;
    min-width: 50px;
}

/* =========================
   DETAILS
   ========================= */
details summary {
    padding: 12px 14px;
    font-weight: 600;
    background-color: #f8fafc;
    color: var(--text-color);
    border: 1px solid var(--border-color);
    cursor: pointer;
    border-radius: 10px;
}

summary:hover {
    border-color: var(--accent-color);
    box-shadow: 0 8px 16px var(--shadow-color);
}

summary::marker {
    color: var(--accent-color);
    font-size: 1.1em;
}

details {
    border: 1px solid var(--border-color);
    padding: 12px;
    border-radius: 14px;
    font-weight: 500;
    max-width: 760px;
    width: 100%;
    background: var(--card-color);
    box-shadow: 0 12px 24px var(--shadow-color);
}

container {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    padding: 10px 0;
}

/* =========================
   ERRORS
   ========================= */
.input-error {
    border: 2px solid #e53935 !important;
    background: #fff5f5;
}

.error-text {
    color: #e53935;
    font-size: 0.85rem;
    margin-top: 4px;
}

/* =========================
   RESPONSIVE
   ========================= */
@media (max-width: 768px) {
    #loadingOverlay {
        width: 100vw;
        height: 100vh;
        top: 0;
        left: 0;
        transform: none;
    }

    details {
        max-width: 90%;
        min-width: 90%;
    }

    .calendar-grid {
        grid-template-columns: repeat(7, minmax(25px, 1fr));
        gap: 3px;
    }

    #dayTerminePanel {
        grid-template-columns: repeat(2, 1fr);
    }

    .rounded-button,
    .calendar-header button {
        font-size: 0.9rem;
        padding: 0.6rem 1.2rem;
    }

    .termin-button {
        display: flex !important;
        margin: 10px 20px 0px 20px !important;
        text-align: center;
        min-width: 80px;
    }
}