:root {
    --bg: #0B1017;
    --surf: #111820;
    --panel: #161E27;
    --border: #1E2D3D;
    --border2: #243344;
    --accent: #C8401A;
    --teal: #1A8C82;
    --gold: #D4A020;
    --blue: #3A6FC8;
    --green: #2A9E5A;
    --text: #D8E4EE;
    --muted: #6A8099;
    --dim: #3A5068;
    --mono: 'Courier New', monospace;
    --sans: 'Segoe UI', Arial, sans-serif;
}

body {
    font-family: var(--sans);
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

/* LAYOUT */
.shell {
    display: grid;
    grid-template-columns: 280px 1fr;
    min-height: 100vh;
}

/* SIDEBAR */
.sidebar {
    background: var(--surf);
    border-right: 1px solid var(--border);
    padding: 20px 0;
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-brand {
    padding: 0 20px 20px;
    border-bottom: 1px solid var(--border);
    margin-bottom: 12px;
}

.sidebar-brand .tag {
    font-family: var(--mono);
    font-size: 8px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 6px;
}

.sidebar-brand h1 {
    font-size: 15px;
    font-weight: 700;
    color: var(--text);
    line-height: 1.3;
}

.sidebar-brand .sub {
    font-size: 11px;
    color: var(--muted);
    margin-top: 4px;
    line-height: 1.5;
}

.step-nav {
    padding: 0 12px;
}

.step-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 9px 10px;
    border-radius: 5px;
    cursor: pointer;
    margin-bottom: 2px;
    transition: background .1s;
    border: 1px solid transparent;
}

.step-item:hover {
    background: rgba(255, 255, 255, .04);
}

.step-item.active {
    background: rgba(200, 64, 26, .1);
    border-color: rgba(200, 64, 26, .3);
}

.step-item.done {
    opacity: .7;
}

.step-num {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    flex-shrink: 0;
    font-family: var(--mono);
    font-size: 10px;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--panel);
    border: 1px solid var(--border2);
    color: var(--muted);
}

.step-item.active .step-num {
    background: var(--accent);
    border-color: var(--accent);
    color: #fff;
}

.step-item.done .step-num {
    background: var(--teal);
    border-color: var(--teal);
    color: #fff;
}

.step-label {
    font-size: 11px;
    line-height: 1.3;
}

.step-label strong {
    display: block;
    font-size: 12px;
    color: var(--text);
}

.step-label span {
    font-size: 10px;
    color: var(--muted);
}

.sidebar-totals {
    margin: 16px 12px 0;
    background: var(--panel);
    border: 1px solid var(--border2);
    border-radius: 6px;
    padding: 14px;
}

.sidebar-totals .tot-label {
    font-family: var(--mono);
    font-size: 8px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 4px;
}

.sidebar-totals .tot-val {
    font-size: 20px;
    font-weight: 700;
    color: var(--teal);
    font-family: var(--mono);
}

.sidebar-totals .tot-sub {
    font-size: 10px;
    color: var(--muted);
    margin-top: 2px;
}

.tot-row {
    margin-bottom: 10px;
}

.tot-row:last-child {
    margin-bottom: 0;
}

/* MAIN */
.main {
    padding: 32px 40px;
    max-width: 860px;
}

.step-panel {
    display: none;
}

.step-panel.active {
    display: block;
}

.step-header {
    margin-bottom: 24px;
}

.step-header .step-tag {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: .14em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 6px;
}

.step-header h2 {
    font-size: 20px;
    font-weight: 700;
    color: var(--text);
    margin-bottom: 6px;
}

.step-header p {
    font-size: 13px;
    color: var(--muted);
    line-height: 1.7;
    max-width: 580px;
}

/* FORM */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin-bottom: 20px;
}

.form-grid.cols3 {
    grid-template-columns: 1fr 1fr 1fr;
}

.form-grid.cols1 {
    grid-template-columns: 1fr;
}

.field {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.field label {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--muted);
}

.field input,
.field select {
    background: var(--panel);
    border: 1px solid var(--border2);
    color: var(--text);
    font-family: var(--mono);
    font-size: 13px;
    padding: 9px 12px;
    border-radius: 4px;
    transition: border-color .15s;
}

.field input:focus,
.field select:focus {
    outline: none;
    border-color: var(--accent);
}

.field .hint {
    font-size: 10px;
    color: var(--dim);
    line-height: 1.5;
}

.field .hint strong {
    color: var(--muted);
}

/* EFFECT CARD */
.effect-card {
    background: var(--panel);
    border: 1px solid var(--border2);
    border-radius: 6px;
    padding: 16px 18px;
    margin-bottom: 14px;
}

.effect-card-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}

.effect-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.effect-card-header h3 {
    font-size: 13px;
    font-weight: 700;
    flex: 1;
}

.effect-card-header .ef-result {
    font-family: var(--mono);
    font-size: 13px;
    font-weight: 700;
    color: var(--teal);
}

.effect-card-header .ef-pm {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--muted);
    border: 1px solid var(--border2);
    padding: 2px 8px;
    border-radius: 3px;
}

/* RESULT SECTION */
.result-banner {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 14px;
    margin-bottom: 28px;
}

.result-card {
    background: var(--panel);
    border: 1px solid var(--border2);
    border-radius: 6px;
    padding: 18px;
}

.result-card .rc-label {
    font-family: var(--mono);
    font-size: 8px;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 8px;
}

.result-card .rc-val {
    font-size: 28px;
    font-weight: 700;
    color: var(--teal);
    font-family: var(--mono);
}

.result-card .rc-sub {
    font-size: 10px;
    color: var(--muted);
    margin-top: 4px;
}

.effect-breakdown {
    margin-bottom: 24px;
}

.effect-breakdown h3 {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--muted);
    margin-bottom: 14px;
}

.ef-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 10px;
}

.ef-row .ef-name {
    font-family: var(--mono);
    font-size: 10px;
    letter-spacing: .06em;
    text-transform: uppercase;
    color: var(--muted);
    width: 160px;
    flex-shrink: 0;
}

.ef-bar-wrap {
    flex: 1;
    background: var(--border);
    border-radius: 2px;
    height: 8px;
}

.ef-bar {
    height: 8px;
    border-radius: 2px;
    transition: width .4s;
}

.ef-row .ef-eur {
    font-family: var(--mono);
    font-size: 11px;
    color: var(--text);
    width: 80px;
    text-align: right;
    flex-shrink: 0;
}

.ef-row .ef-pm-tag {
    font-family: var(--mono);
    font-size: 9px;
    color: var(--dim);
    border: 1px solid var(--border2);
    padding: 1px 6px;
    border-radius: 2px;
    width: 80px;
    text-align: center;
    flex-shrink: 0;
}

.methodology {
    background: rgba(200, 64, 26, .06);
    border: 1px solid rgba(200, 64, 26, .2);
    border-radius: 6px;
    padding: 14px 16px;
    margin-bottom: 20px;
}

.methodology .meth-label {
    font-family: var(--mono);
    font-size: 9px;
    letter-spacing: .1em;
    text-transform: uppercase;
    color: var(--accent);
    margin-bottom: 6px;
}

.methodology p {
    font-size: 11px;
    color: var(--muted);
    line-height: 1.7;
}

/* NAV BUTTONS */
.step-nav-btns {
    display: flex;
    gap: 10px;
    margin-top: 24px;
}

.btn-next {
    background: var(--accent);
    color: #fff;
    border: none;
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: 10px 24px;
    border-radius: 4px;
    cursor: pointer;
    transition: background .15s;
}

.btn-next:hover {
    background: #e05530;
}

.btn-back {
    background: none;
    color: var(--muted);
    border: 1px solid var(--border2);
    font-family: var(--mono);
    font-size: 11px;
    letter-spacing: .08em;
    text-transform: uppercase;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    transition: .15s;
}

.btn-back:hover {
    border-color: var(--muted);
    color: var(--text);
}

.tag-pm {
    font-family: var(--mono);
    font-size: 9px;
    color: var(--dim);
    border: 1px solid var(--border);
    padding: 2px 7px;
    border-radius: 2px;
    display: inline-block;
    margin-left: 8px;
    vertical-align: middle;
}

.divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 20px 0;
}

/* Inline info box */
.info-box {
    background: rgba(26, 140, 130, .08);
    border: 1px solid rgba(26, 140, 130, .25);
    border-radius: 5px;
    padding: 12px 14px;
    margin-bottom: 16px;
    font-size: 11px;
    color: var(--muted);
    line-height: 1.7;
}

.info-box strong {
    color: var(--teal);
}