*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    --bg: #FAFAFA;
    --bg-card: #FFFFFF;
    --cta: #FFD600;
    --cta-hover: #FFC400;
    --text: #111111;
    --text-muted: #666666;
    --red: #E53935;
    --orange: #FB8C00;
    --green: #43A047;
    --border: #E0E0E0;
    --radius: 0;
    --font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

html { font-size: 16px; }
body {
    font-family: var(--font);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
}

.step {
    display: none;
    min-height: 100vh;
    padding: 3rem 1rem;
    align-items: center;
    justify-content: center;
}
.step.active {
    display: flex;
}

.container {
    max-width: 560px;
    width: 100%;
    margin: 0 auto;
    text-align: center;
}

h1 {
    font-size: 1.75rem;
    font-weight: 900;
    letter-spacing: 0.02em;
    line-height: 1.2;
    margin-bottom: 1rem;
    text-transform: uppercase;
}
h2 {
    font-size: 1.5rem;
    font-weight: 900;
    letter-spacing: 0.02em;
    margin-bottom: 0.75rem;
    text-transform: uppercase;
}
h3 {
    font-size: 1.1rem;
    font-weight: 800;
    margin: 2rem 0 1rem;
    text-transform: uppercase;
}

.subtitle {
    color: var(--text-muted);
    font-size: 1.05rem;
    margin-bottom: 2rem;
}

input[type="text"],
input[type="url"],
input[type="email"],
input[type="number"] {
    width: 100%;
    padding: 1rem;
    font-size: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-card);
    outline: none;
    transition: border-color 0.2s;
}
input:focus { border-color: var(--text); }

.btn-cta {
    display: block;
    width: 100%;
    padding: 1rem;
    margin-top: 1rem;
    font-size: 1rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--cta);
    color: var(--text);
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.2s;
}
.btn-cta:hover { background: var(--cta-hover); }
.btn-cta:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.hint {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: 1rem;
}

/* Loading */
.loader { padding: 4rem 0; }
.spinner {
    width: 48px;
    height: 48px;
    border: 4px solid var(--border);
    border-top-color: var(--text);
    border-radius: 50%;
    margin: 0 auto 1.5rem;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }
.loading-text {
    color: var(--text-muted);
    font-size: 1rem;
}

/* Score Ring */
.score-wrapper {
    position: relative;
    width: 160px;
    height: 160px;
    margin: 1.5rem auto;
}
.score-ring { width: 100%; height: 100%; transform: rotate(-90deg); }
.score-bg {
    fill: none;
    stroke: var(--border);
    stroke-width: 8;
}
.score-fill {
    fill: none;
    stroke: var(--green);
    stroke-width: 8;
    stroke-linecap: butt;
    stroke-dasharray: 339.292;
    stroke-dashoffset: 339.292;
    transition: stroke-dashoffset 1.5s ease-out, stroke 0.3s;
}
.score-number {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 2.5rem;
    font-weight: 900;
}
.score-label {
    font-weight: 700;
    font-size: 1rem;
    margin-bottom: 1.5rem;
}

/* Metrics */
.metrics {
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin: 1rem 0;
}
.metric {
    display: flex;
    flex-direction: column;
    align-items: center;
}
.metric-value {
    font-size: 1.3rem;
    font-weight: 800;
}
.metric-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Issues */
.issues-list { text-align: left; }
.issue-card {
    background: var(--bg-card);
    border: 2px solid var(--border);
    padding: 1.25rem;
    margin-bottom: 0.75rem;
}
.issue-title {
    font-weight: 800;
    font-size: 0.95rem;
    margin-bottom: 0.25rem;
}
.issue-savings {
    font-size: 0.8rem;
    color: var(--red);
    font-weight: 700;
    margin-bottom: 0.5rem;
}
.issue-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.4;
}

/* Revenue */
.revenue-input-wrap {
    display: flex;
    align-items: center;
    border: 2px solid var(--border);
    background: var(--bg-card);
}
.revenue-input-wrap input {
    border: none;
    flex: 1;
    padding: 1rem 0.5rem;
}
.currency, .period {
    padding: 0 1rem;
    font-weight: 700;
    color: var(--text-muted);
}

.revenue-results { margin-top: 2rem; }
.revenue-results.hidden { display: none; }

.loss-tiers {
    display: flex;
    gap: 0.75rem;
    margin: 1rem 0;
}
.loss-tier {
    flex: 1;
    padding: 1.25rem 0.5rem;
    background: var(--bg-card);
    border: 2px solid var(--border);
    text-align: center;
}
.loss-tier.tier-highlight {
    border-color: var(--red);
    background: #FFF5F5;
}
.loss-tier.tier-highlight-green {
    border-color: var(--green);
    background: #F1F8F1;
}
.tier-value-green { color: var(--green) !important; }
.tier-label {
    display: block;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: 0.5rem;
}
.tier-value {
    display: block;
    font-size: 1.4rem;
    font-weight: 900;
    color: var(--red);
}
/* Fix breakdown */
.fix-breakdown { margin: 1rem 0; }
.fix-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0.75rem;
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
}
.fix-row:last-child { border-bottom: none; }
.fix-title { color: var(--text-muted); }
.fix-gain { font-weight: 800; color: var(--green); white-space: nowrap; }

.loss-note {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin: 1rem 0 1.5rem;
}

/* Confirmation */
.confirm-icon {
    width: 64px;
    height: 64px;
    line-height: 64px;
    font-size: 2rem;
    border-radius: 50%;
    background: var(--green);
    color: white;
    margin: 0 auto 1.5rem;
}
.confirm-summary {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-top: 1.5rem;
}

/* Error */
.error-msg {
    color: var(--red);
    font-weight: 700;
    margin-top: 0.75rem;
    font-size: 0.9rem;
}

@media (max-width: 480px) {
    h1 { font-size: 1.4rem; }
    .loss-tiers { flex-direction: column; }
    .metrics { gap: 1rem; }
}