.logo {
    width: 135px;
    margin: 7px 0;
}

.gradient-line {
    position: relative;
    padding-bottom: 24px;
}

.gradient-line::after {
    content: "";
    position: absolute;
    width: 100%;
    height: 24px;
    bottom: 0;
    left: 0;
    background: linear-gradient(270deg,#ffc901 0%,#f40000 50.2375%,#000 100%);
}

.project-form-card,
.room-item,
.radiator-item {
    border-radius: 0;
    border: 1px solid black;
}

.room-item {
    display: none;
}

.room-item.is-active {
    display: block;
}

.room-nav-badge {
    min-width: 120px;
    text-align: center;
}

.room-tab-btn.active {
    background: #000000;
    color: #fff;
    border-color: #000;
}

.room-tabs {
    gap: .5rem;
}

.room-tabs .btn {
    white-space: nowrap;
}

.form-control,
.form-select {
    min-height: 48px;
    border-radius: 14px;
}

textarea.form-control {
    min-height: 140px;
    border-radius: 18px;
}

.form-control, .form-select {
    background-color: #e7e7e7;
}

.form-control:focus {
    background-color: #e7e7e7;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
}

.radiator-item {
    background: #f8f9fa;
}

.sticky-room-nav {
    position: sticky;
    bottom: 0;
    z-index: 30;
    background: rgba(255, 255, 255, 0.96);
    backdrop-filter: blur(10px);
    padding: 12px 0;
    border-top: 1px solid #000000;
}

.radiator-highlight {
    animation: radiatorFlash 2.5s ease;
}

#prev-room-btn svg {
    transform: rotate(180deg);
}

#next-room-btn, #prev-room-btn {
    width: 40px;
    height: 40px;
    line-height: 0;
}

@keyframes radiatorFlash {
    0%   { 
        background: #ffe7cd;
        box-shadow: 0px 0px 15px #ff8400; 
    }
    70%  { 
        background: #fff0df;
        box-shadow: 0px 0px 15px #ffca92; 
    }
    100% { 
        background: #f8f9fa;
        box-shadow: 0px 0px 15px #ffffff; 
    }
}

@media (max-width: 767.98px) {
    .room-nav-main {
        flex-direction: column;
        align-items: stretch !important;
    }

    .room-tabs {
        overflow-x: auto;
        flex-wrap: nowrap !important;
        padding-bottom: .25rem;
    }

    .room-top-actions {
        width: 100%;
    }
}

.radiator-type-card {
    cursor: pointer;
    display: block;
}

.radiator-type-card-inner {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 10px;
    border-radius: 8px;
    border: 2px solid transparent;
    transition: all 0.15s ease;
}

/* Bild */
.radiator-type-image-wrap {
    display: block;
}

.radiator-type-image {
    width: 200px;
    height: 200px;
    object-fit: cover;
    border-radius: 6px;
}

/* Radio verstecken */
.radiator-type-input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

/* Hover Effekt */
.radiator-type-card-inner:hover {
    border-color: #c7c7c7;
}

/* Ausgewählt */
.radiator-type-card:has(.radiator-type-input:checked) .radiator-type-card-inner {
    border-color: #7c3aed; /* violett */
    box-shadow: 0 0 0 2px rgba(124,58,237,0.2);
}

/* Label Text */
.radiator-type-label {
    font-size: 14px;
    justify-content: center;
    align-items: center;
}