:root {
    --bg: #faf9f6;
    --surface: #ffffff;
    --surface-2: #f5f4fb;
    --border: #eae8f3;
    --border-strong: #dcd9ea;
    --text: #2c2b35;
    --text-dim: #726f7d;
    --text-faint: #a29fae;
    --profit: #1fa971;
    --profit-dim: #e6f7ef;
    --profit-line: #bfe9d5;
    --loss: #e0435f;
    --loss-dim: #fdeaee;
    --loss-line: #f6c7d1;
    --warn: #dd9328;
    --warn-dim: #fdf2df;
    --warn-line: #f3dcac;
    --info: #3f83c4;
    --info-dim: #e9f2fa;
    --info-line: #c7dff1;
    --gold: #bd8f2b;
    --gold-dim: #faf3de;
    --gold-line: #ecdba7;
    --radius: 16px;
    --radius-sm: 8px;
    --font-display: "Inter", sans-serif;
    --font-body: "Inter", sans-serif;
}

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

body {
    background: var(--bg);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-body);
    padding: 2rem;
    margin: 0;
}

.card {
    max-width: 560px;
    width: 100%;
    background: var(--surface);
    border-radius: var(--radius);
    padding: 2.5rem 2.5rem 3rem;
    box-shadow: 0 4px 24px rgba(44, 43, 53, 0.06);
    border: 1px solid var(--border);
}

.progress-container {
    margin-bottom: 2.5rem;
}

.progress-labels {
    display: flex;
    justify-content: space-between;
    margin-bottom: 0.6rem;
    padding: 0 2px;
}

.progress-label {
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-faint);
}

.progress-label.active {
    color: var(--info);
}

.progress-label.completed {
    color: var(--profit);
}

.progress-bar {
    display: flex;
    gap: 6px;
    height: 6px;
}

.progress-segment {
    flex: 1;
    height: 100%;
    background: var(--border);
    border-radius: 4px;
}

.progress-segment.active {
    background: var(--info);
    flex: 2.5;
}

.progress-segment.completed {
    background: var(--profit);
}

.step-panel {
    background: var(--surface);
    border-radius: var(--radius);
    padding: 0;
    border: 1px solid var(--border);
    padding: 1.8rem 1.8rem 2rem;
}

.step-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--info-dim);
    padding: 0.3rem 1rem;
    border-radius: 40px;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--info);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 1rem;
}

.step-badge i {
    font-size: 0.7rem;
}

.step-title {
    font-weight: 700;
    font-size: 1.5rem;
    color: var(--text);
    margin-bottom: 0.4rem;
    letter-spacing: -0.02em;
}

.step-desc {
    color: var(--text-dim);
    font-size: 0.95rem;
    margin-bottom: 1.8rem;
    line-height: 1.5;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
    margin-bottom: 0.5rem;
}

.input-group label {
    font-weight: 600;
    font-size: 0.75rem;
    letter-spacing: 0.03em;
    color: var(--text-dim);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.input-group label i {
    font-size: 0.8rem;
    color: var(--text-faint);
}

.input-group input {
    background: var(--bg);
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.9rem 1.2rem;
    font-size: 0.95rem;
    font-weight: 450;
    color: var(--text);
    outline: none;
    font-family: var(--font-body);
    width: 100%;
}

.input-group input:focus {
    border-color: var(--info);
    box-shadow: 0 0 0 4px var(--info-dim);
    background: var(--surface);
}

.input-group input::placeholder {
    color: var(--text-faint);
    font-weight: 400;
}

.action-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
    gap: 0.8rem;
}

.btn {
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-body);
    white-space: nowrap;
    cursor: default;
}

.btn-primary {
    background: var(--text);
    color: white;
}

.btn-primary:disabled {
    opacity: 0.5;
    pointer-events: none;
}

.btn-ghost {
    background: transparent;
    border: 2px solid var(--border);
    color: var(--text-dim);
}

.btn-success {
    background: var(--profit);
    color: white;
}

.btn i {
    font-size: 0.9rem;
}

.btn-back {
    background: transparent;
    border: none;
    color: var(--text-faint);
    padding: 0.75rem 1rem;
    cursor: default;
}

.feedback {
    margin-top: 1.2rem;
    padding: 0.9rem 1.2rem;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    display: flex;
    align-items: flex-start;
    gap: 0.8rem;
    background: var(--surface-2);
    border: 1px solid var(--border);
    color: var(--text);
}

.feedback i {
    font-size: 1rem;
    color: var(--text-faint);
    margin-top: 0.1rem;
}

.feedback.error {
    background: var(--loss-dim);
    border-color: var(--loss-line);
    color: var(--loss);
}

.feedback.error i {
    color: var(--loss);
}

.feedback.success {
    background: var(--profit-dim);
    border-color: var(--profit-line);
    color: var(--profit);
}

.feedback.success i {
    color: var(--profit);
}

.feedback.hidden {
    display: none;
}

.finish-message {
    text-align: center;
    padding: 1.5rem 0.5rem;
}

.finish-message .icon-big {
    font-size: 4rem;
    color: var(--profit);
    display: block;
    margin-bottom: 0.8rem;
}

.finish-message h3 {
    font-weight: 700;
    color: var(--text);
    font-size: 1.6rem;
    letter-spacing: -0.02em;
    margin-bottom: 0.3rem;
}

.finish-message p {
    color: var(--text-dim);
    font-size: 0.95rem;
    line-height: 1.5;
}

.review-grid {
    background: var(--bg);
    border-radius: var(--radius-sm);
    padding: 1rem 1.2rem;
    margin: 0.5rem 0 0.5rem;
    border: 1px solid var(--border);
}

.review-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--border);
}

.review-item:last-child {
    border-bottom: none;
}

.review-item .label {
    color: var(--text-dim);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.review-item .label i {
    color: var(--text-faint);
    font-size: 0.85rem;
}

.review-item .value {
    font-weight: 600;
    color: var(--text);
    font-size: 0.9rem;
    word-break: break-all;
    max-width: 55%;
    text-align: right;
}

.btn-startover {
    background: var(--text);
    color: white;
    border: none;
    padding: 0.75rem 2rem;
    border-radius: 40px;
    font-weight: 600;
    font-size: 0.9rem;
    display: inline-flex;
    align-items: center;
    gap: 0.6rem;
    font-family: var(--font-body);
    cursor: default;
}

@media (max-width: 640px) {
    body {
        padding: 0;
        align-items: flex-start;
        background: var(--bg);
    }

    .card {
        max-width: 100%;
        border-radius: 0;
        padding: 1.2rem 1rem 1.8rem;
        background: var(--bg);
        box-shadow: none;
        border: none;
        min-height: 100vh;
    }

    .step-title {
        font-size: 1.2rem;
    }

    .step-panel {
        background: var(--surface);
        padding: 1.5rem 1.2rem 1.8rem;
        border-radius: var(--radius);
        border: 1px solid var(--border);
    }

    .action-row {
        flex-wrap: nowrap;
        gap: 0.5rem;
        justify-content: space-between;
    }

    .btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
        flex: 1;
        justify-content: center;
        min-width: 0;
    }

    .btn i {
        font-size: 0.8rem;
    }

    .btn-back {
        flex: 0 0 auto;
        padding: 0.6rem 0.8rem;
    }

    .progress-labels {
        display: none;
    }

    .progress-container {
        margin-bottom: 1.5rem;
    }

    .feedback {
        padding: 0.7rem 1rem;
        font-size: 0.85rem;
        border-radius: var(--radius-sm);
    }

    .review-grid {
        padding: 0.8rem 1rem;
    }

    .review-item .value {
        max-width: 50%;
        font-size: 0.8rem;
    }

    .finish-message .icon-big {
        font-size: 3rem;
    }

    .finish-message h3 {
        font-size: 1.3rem;
    }

    .step-desc {
        font-size: 0.85rem;
        margin-bottom: 1.2rem;
    }

    .input-group input {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
        border-radius: var(--radius-sm);
    }

    .step-badge {
        font-size: 0.65rem;
        padding: 0.2rem 0.8rem;
    }
}

@media (min-width: 641px) and (max-width: 768px) {
    .card {
        padding: 2rem 2rem 2.5rem;
    }
}