/* ================================================================
   EXCHANGE TOOL — Premium Visual Redesign
   OSA Žilina | Motor Replacement Calculator
   ================================================================ */

/* ── Grid Layout ── */
.exchange-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    background: transparent;
    padding: 0;
    border-radius: 0;
    box-shadow: none;
    margin-bottom: 40px;
}

/* ── Motor Columns ── */
.motor-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
    background: var(--white);
    padding: 32px 30px;
    border-radius: 0;
    position: relative;
    border: 1px solid rgba(0,0,0,0.07);
    transition: box-shadow 0.3s ease;
}

.motor-column.old-motor {
    border-radius: 16px 0 0 0;
    border-right: none;
    background: linear-gradient(160deg, #f8f9fa 0%, #ffffff 100%);
}

.motor-column.new-motor {
    border-radius: 0 16px 0 0;
    background: linear-gradient(160deg, #ffffff 0%, #f0f4ff 100%);
}

.motor-column:hover {
    box-shadow: 0 8px 32px rgba(36,66,129,0.10);
    z-index: 1;
}

/* ── Column Headers ── */
.motor-column h3 {
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    padding-bottom: 14px;
    margin-bottom: 4px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.old-motor h3 {
    color: var(--text-muted);
    border-bottom: 2px solid rgba(0,0,0,0.08);
}

.new-motor h3 {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
}

.motor-column h3::before {
    content: '';
    display: inline-block;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}
.old-motor h3::before { background: #b0bcc8; }
.new-motor h3::before { background: var(--primary); box-shadow: 0 0 0 3px rgba(36,66,129,0.15); }

/* ── Upload / Image Panel ── */
.upload-panel {
    background: rgba(248,249,250,0.7);
    border: 1.5px dashed rgba(36,66,129,0.18);
    border-radius: 12px;
    padding: 18px;
    transition: border-color 0.3s, background 0.3s;
}

.upload-panel:hover {
    border-color: var(--primary);
    background: rgba(36,66,129,0.03);
}

.image-preview {
    border-radius: 8px;
    overflow: hidden;
    margin-bottom: 14px;
    background: #fff;
    border: 1px solid rgba(0,0,0,0.06);
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 120px;
}

.image-preview img {
    max-width: 100%;
    max-height: 160px;
    object-fit: contain;
    display: block;
}

.transcription {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.transcription label {
    font-size: 0.75rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

.transcription textarea,
#ocr-result {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid rgba(36,66,129,0.14);
    border-radius: 8px;
    font-family: 'Courier New', monospace;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--primary);
    background: #fff;
    resize: vertical;
    min-height: 60px;
    transition: border-color 0.2s;
    box-sizing: border-box;
}

#ocr-result:focus { border-color: var(--primary); outline: none; }

/* ── Parameters List (Old Motor) ── */
.parameters-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.param-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 9px 14px;
    background: rgba(248,249,250,0.8);
    border-radius: 8px;
    font-size: 0.9rem;
    border: 1px solid transparent;
    transition: border-color 0.2s, background 0.2s;
}

.param-row:hover { border-color: rgba(36,66,129,0.12); background: #fff; }
.param-row span { color: var(--text-muted); font-weight: 500; }

.param-row input {
    background: transparent;
    border: none;
    border-bottom: 1.5px solid rgba(36,66,129,0.18);
    text-align: right;
    font-weight: 700;
    color: var(--primary);
    font-family: inherit;
    font-size: 0.9rem;
    width: 48%;
    padding: 2px 4px;
    transition: border-color 0.2s;
}

.param-row input:focus { border-bottom-color: var(--primary); outline: none; }
.param-row strong { color: var(--primary); font-weight: 800; }

/* ── Tabs for New Motor ── */
.exchange-tabs {
    display: flex;
    gap: 6px;
    margin-bottom: 4px;
    background: var(--bg-gray);
    padding: 5px;
    border-radius: 10px;
    border: 1px solid rgba(0,0,0,0.05);
}

.tab-btn {
    flex: 1;
    padding: 10px 16px;
    background: transparent;
    border: none;
    border-radius: 7px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.82rem;
    color: var(--text-muted);
    transition: all 0.25s ease;
    text-align: center;
}

.tab-btn.active {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 2px 10px rgba(36,66,129,0.12);
}

.tab-content { display: none; flex-direction: column; gap: 20px; }
.tab-content.active { display: flex; }

/* ── Config Mode Tabs ── */
.config-mode-tabs {
    display: flex;
    gap: 4px;
    background: var(--bg-gray);
    padding: 5px;
    border-radius: 10px;
    border: 1px solid rgba(0,0,0,0.05);
    margin-bottom: 22px;
}

.mode-btn {
    flex: 1;
    padding: 10px 16px;
    border: none;
    background: transparent;
    border-radius: 7px;
    font-weight: 700;
    font-size: 13px;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
}

.mode-btn.active {
    background: var(--white);
    color: var(--primary);
    box-shadow: 0 3px 12px rgba(36,66,129,0.14);
}

.mode-content { display: none; flex-direction: column; }
.mode-content.active { display: flex; }

/* ── Parameter Grid ── */
.parameters-grid { display: flex; flex-direction: column; gap: 18px; }

.param-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.param-item > span {
    font-weight: 700;
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

/* ── Option Buttons ── */
.options {
    display: flex;
    flex-wrap: wrap;
    gap: 7px;
}

.options button {
    padding: 7px 13px;
    border: 1.5px solid rgba(36,66,129,0.14);
    background: #fff;
    border-radius: 7px;
    cursor: pointer;
    font-weight: 700;
    font-size: 0.82rem;
    transition: all 0.2s ease;
    color: var(--text-muted);
    white-space: nowrap;
}

.options button:hover {
    border-color: var(--primary);
    color: var(--primary);
    background: rgba(36,66,129,0.04);
}

.options button.active {
    background: var(--primary);
    color: #fff;
    border-color: var(--primary);
    box-shadow: 0 2px 8px rgba(36,66,129,0.25);
    transform: translateY(-1px);
}

.options button.worse {
    border-color: #e53935;
    color: #e53935;
    background: rgba(229,57,53,0.04);
}

.options button.worse.active {
    background: #e53935;
    color: #fff;
    border-color: #e53935;
}

.options button.disabled {
    background: #f5f5f5;
    color: #bbb;
    border-color: #eee;
    cursor: not-allowed;
    text-decoration: line-through;
    transform: none;
    box-shadow: none;
}

/* ── Selected Motor Summary Card ── */
.selected-motor-summary { margin-top: 24px; }

.summary-card {
    display: flex;
    gap: 18px;
    background: linear-gradient(135deg, rgba(36,66,129,0.05) 0%, rgba(86,183,167,0.05) 100%);
    border: 1.5px solid rgba(36,66,129,0.12);
    padding: 20px;
    border-radius: 14px;
    align-items: center;
    transition: box-shadow 0.3s;
}

.summary-card:hover { box-shadow: 0 6px 24px rgba(36,66,129,0.10); }

.summary-card img {
    height: 78px;
    width: 78px;
    object-fit: contain;
    border-radius: 8px;
    background: #fff;
    padding: 6px;
    border: 1px solid rgba(0,0,0,0.07);
}

.summary-details { flex: 1; min-width: 0; }
.summary-details h4 {
    font-size: 0.88rem;
    font-family: 'Courier New', monospace;
    font-weight: 800;
    color: var(--primary);
    letter-spacing: 0.04em;
    margin-bottom: 4px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.summary-details p {
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.price {
    font-weight: 900;
    color: var(--primary);
    font-size: 1.05rem;
    background: rgba(36,66,129,0.08);
    padding: 4px 10px;
    border-radius: 6px;
    display: inline-block;
}

/* ── Expert Inquiry ── */
.expert-inquiry {
    background: linear-gradient(135deg, rgba(36,66,129,0.05) 0%, rgba(86,183,167,0.06) 100%);
    border: 1.5px solid rgba(36,66,129,0.12);
    border-radius: 14px;
    padding: 28px 24px;
    text-align: center;
}

.expert-inquiry h4 { color: var(--primary); font-size: 1.1rem; margin-bottom: 10px; }
.expert-inquiry p { color: var(--text-muted); font-size: 0.9rem; margin-bottom: 18px; }

.expert-inquiry input {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid rgba(36,66,129,0.18);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.95rem;
    background: #fff;
    box-sizing: border-box;
    transition: border-color 0.2s;
}

.expert-inquiry input:focus { border-color: var(--primary); outline: none; }

/* ── Comparison Block ── */
.comparison-block {
    grid-column: 1 / -1;
    margin-top: 0;
    background: var(--white);
    border: 1px solid rgba(0,0,0,0.07);
    border-top: none;
    padding: 30px 32px;
    border-radius: 0;
}

.comparison-block h3 {
    font-size: 1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--primary);
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.comparison-block h3::after {
    content: '';
    flex: 1;
    height: 2px;
    background: linear-gradient(to right, var(--primary), transparent);
    border-radius: 2px;
}

/* ── Exchange Settings (Sliders) ── */
.exchange-settings {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 28px;
    padding: 22px 26px;
    background: linear-gradient(135deg, rgba(36,66,129,0.04) 0%, rgba(86,183,167,0.04) 100%);
    border-radius: 12px;
    margin-bottom: 24px;
    border: 1px solid rgba(36,66,129,0.08);
}

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

.setting-item label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.setting-item label span {
    font-size: 1rem;
    font-weight: 800;
    color: var(--primary);
    font-family: 'Montserrat', sans-serif;
    background: rgba(36,66,129,0.08);
    padding: 2px 10px;
    border-radius: 6px;
}

.setting-item input[type="range"] {
    -webkit-appearance: none;
    width: 100%;
    height: 5px;
    border-radius: 5px;
    background: rgba(36,66,129,0.12);
    outline: none;
    cursor: pointer;
    transition: background 0.3s;
}

.setting-item input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 8px rgba(36,66,129,0.3);
    border: 2px solid #fff;
    transition: transform 0.2s, box-shadow 0.2s;
}

.setting-item input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
    box-shadow: 0 4px 14px rgba(36,66,129,0.4);
}

/* ── Comparison Table ── */
.comparison-table {
    width: 100%;
    border-collapse: collapse;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(36,66,129,0.08);
}

.comparison-table thead tr {
    background: linear-gradient(90deg, var(--primary) 0%, #1a3875 100%);
}

.comparison-table th {
    text-align: left;
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: rgba(255,255,255,0.8);
    padding: 14px 18px;
    font-weight: 700;
}

.comparison-table th:not(:first-child) { text-align: center; }

.comparison-table tbody tr {
    transition: background 0.18s;
    border-bottom: 1px solid rgba(36,66,129,0.05);
}

.comparison-table tbody tr:last-child { border-bottom: none; }
.comparison-table tbody tr:hover { background: rgba(36,66,129,0.03); }
.comparison-table tbody tr:nth-child(even) { background: rgba(248,249,250,0.6); }
.comparison-table tbody tr:nth-child(even):hover { background: rgba(36,66,129,0.04); }

.comparison-table td {
    padding: 14px 18px;
    font-weight: 700;
    font-size: 1rem;
    color: var(--primary);
    text-align: center;
}

.comparison-table td.param-name {
    text-align: left;
    font-weight: 500;
    color: var(--text-muted);
    font-size: 0.88rem;
    padding-left: 18px;
}

/* ── Diff Badges ── */
.val-diff {
    font-family: 'Montserrat', sans-serif;
    font-size: 0.9rem;
    font-weight: 800;
    padding: 4px 10px;
    border-radius: 20px;
    display: inline-block;
    min-width: 60px;
    text-align: center;
}

.val-better {
    color: #1b7a3c !important;
    background: rgba(27,122,60,0.10);
}

.val-worse {
    color: #c62828 !important;
    background: rgba(198,40,40,0.09);
}

/* ── ROI Footer Bar ── */
.footer-bottom-row {
    grid-column: 1 / -1;
    display: flex;
    justify-content: space-between;
    align-items: stretch;
    gap: 0;
    background: linear-gradient(135deg, var(--primary) 0%, #1a3875 100%);
    border-radius: 0 0 16px 16px;
    overflow: hidden;
    border: 1px solid rgba(36,66,129,0.15);
    border-top: none;
}

.roi-summary {
    display: flex;
    flex: 1;
    gap: 0;
}

.roi-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 24px 20px;
    gap: 6px;
    border-right: 1px solid rgba(255,255,255,0.12);
    text-align: center;
    transition: background 0.2s;
}

.roi-item:hover { background: rgba(255,255,255,0.06); }

.roi-item span {
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: rgba(255,255,255,0.6);
    font-weight: 600;
}

.roi-item strong {
    font-family: 'Montserrat', sans-serif;
    font-weight: 900;
    line-height: 1.1;
}

#exch-roi { font-size: 2rem; color: #ffd740; }
#exch-savings10y { font-size: 1.45rem; color: #69f0ae; }
#exch-co2-10y { font-size: 1.45rem; color: #80deea; }

.order-action {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 20px 24px;
    justify-content: center;
    align-items: stretch;
    min-width: 180px;
    background: rgba(255,255,255,0.05);
}

.order-action .btn {
    text-align: center;
    border-radius: 8px !important;
    font-size: 0.82rem !important;
    padding: 12px 18px !important;
    white-space: nowrap;
}

/* ── Gear Calculator (inline styles override via specificity) ── */
#gear-calc-type,
#gear-calc-ratio,
#gear-calc-power,
#gear-calc-rpm {
    width: 100%;
    padding: 10px 14px;
    border: 1.5px solid rgba(36,66,129,0.16);
    border-radius: 8px;
    font-family: inherit;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
    appearance: auto;
    box-sizing: border-box;
}

#gear-calc-type:focus,
#gear-calc-ratio:focus,
#gear-calc-power:focus,
#gear-calc-rpm:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(36,66,129,0.10);
    outline: none;
}

.gear-roi-display {
    background: linear-gradient(135deg, rgba(36,66,129,0.05) 0%, rgba(86,183,167,0.05) 100%);
    border: 1.5px solid rgba(36,66,129,0.10);
    padding: 20px 16px;
    border-radius: 14px;
    margin-top: 16px;
}

.gear-roi-display .roi-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.gear-roi-display .roi-val {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    background: #fff;
    border: 1px solid rgba(36,66,129,0.09);
    border-radius: 10px;
    padding: 12px 8px;
    gap: 4px;
    transition: box-shadow 0.2s, transform 0.2s;
}

.gear-roi-display .roi-val:hover {
    box-shadow: 0 4px 14px rgba(36,66,129,0.10);
    transform: translateY(-2px);
}

.gear-roi-display .roi-val strong {
    display: block;
    font-size: 1.3rem;
    font-weight: 900;
    color: var(--primary);
    font-family: 'Montserrat', sans-serif;
    line-height: 1.1;
}

.gear-roi-display .roi-val span {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    font-weight: 600;
    line-height: 1.3;
}

/* ── Dark Mode ── */
[data-theme="dark"] .exchange-container { background: transparent; }
[data-theme="dark"] .motor-column { background: #1a1a1a; border-color: rgba(255,255,255,0.06); }
[data-theme="dark"] .motor-column.old-motor { background: linear-gradient(160deg, #181818 0%, #1e1e1e 100%); }
[data-theme="dark"] .motor-column.new-motor { background: linear-gradient(160deg, #1e1e1e 0%, #1a1e2e 100%); }
[data-theme="dark"] .upload-panel { background: rgba(255,255,255,0.03); border-color: rgba(255,255,255,0.10); }
[data-theme="dark"] .image-preview { background: #111; border-color: rgba(255,255,255,0.06); }
[data-theme="dark"] #ocr-result { background: #111; border-color: rgba(255,255,255,0.12); color: #c5d0e8; }
[data-theme="dark"] .param-row { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.04); }
[data-theme="dark"] .param-row input { color: #c5d0e8; border-bottom-color: rgba(255,255,255,0.15); }
[data-theme="dark"] .exchange-tabs,
[data-theme="dark"] .config-mode-tabs { background: rgba(255,255,255,0.04); }
[data-theme="dark"] .tab-btn.active,
[data-theme="dark"] .mode-btn.active { background: #2a2a2a; }
[data-theme="dark"] .options button { background: #2a2a2a; color: #c5d0e8; border-color: rgba(255,255,255,0.10); }
[data-theme="dark"] .options button.active { background: var(--primary); border-color: var(--primary); color: #fff; }
[data-theme="dark"] .comparison-block { background: #1a1a1a; border-color: rgba(255,255,255,0.06); }
[data-theme="dark"] .exchange-settings { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.08); }
[data-theme="dark"] .comparison-table { border-color: rgba(255,255,255,0.06); }
[data-theme="dark"] .comparison-table tbody tr { border-bottom-color: rgba(255,255,255,0.04); }
[data-theme="dark"] .comparison-table tbody tr:nth-child(even) { background: rgba(255,255,255,0.03); }
[data-theme="dark"] .comparison-table td { color: #c5d0e8; }
[data-theme="dark"] .summary-card { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.10); }
[data-theme="dark"] .summary-card img { background: #1e1e1e; }
[data-theme="dark"] .price { background: rgba(255,255,255,0.08); color: #7eb3f5; }
[data-theme="dark"] .expert-inquiry { background: rgba(255,255,255,0.04); border-color: rgba(255,255,255,0.10); }
[data-theme="dark"] .expert-inquiry input { background: #111; border-color: rgba(255,255,255,0.12); color: #fff; }
[data-theme="dark"] .gear-roi-display { background: rgba(255,255,255,0.03); border-color: rgba(255,255,255,0.08); }
[data-theme="dark"] .gear-roi-display .roi-val { background: #1e1e1e; border-color: rgba(255,255,255,0.07); }
[data-theme="dark"] .gear-roi-display .roi-val strong { color: #7eb3f5; }
[data-theme="dark"] #gear-calc-type,
[data-theme="dark"] #gear-calc-ratio,
[data-theme="dark"] #gear-calc-power,
[data-theme="dark"] #gear-calc-rpm { background: #1a1a1a; color: #c5d0e8; border-color: rgba(255,255,255,0.12); }

/* ── Responsive ── */
@media (max-width: 1024px) {
    .exchange-container { grid-template-columns: 1fr; }
    .motor-column.old-motor { border-radius: 16px 16px 0 0; border-right: 1px solid rgba(0,0,0,0.07); border-bottom: none; }
    .motor-column.new-motor { border-radius: 0; }
    .comparison-block { border-top: 1px solid rgba(0,0,0,0.07); }
    .exchange-settings { grid-template-columns: 1fr; gap: 18px; }
    .footer-bottom-row { flex-direction: column; border-radius: 0 0 16px 16px; }
    .roi-summary { flex-direction: column; }
    .roi-item { border-right: none; border-bottom: 1px solid rgba(255,255,255,0.10); padding: 18px; }
    .order-action { flex-direction: row; min-width: unset; }
}

@media (max-width: 600px) {
    .motor-column { padding: 22px 18px; }
    .comparison-block { padding: 20px 16px; }
    .gear-roi-display .roi-grid { grid-template-columns: repeat(2, 1fr); }
    .order-action { flex-direction: column; }
}