:root {
    --primary: #1a2a3a;
    --accent: #cf5553;
    --bg: #f8fafc;
    --card: #ffffff;
    --text-body: 'Inter', sans-serif;
    --error: #d63031;
}

#calcCard {
    font-family: var(--text-body);
    background-color: var(--bg);
    color: #2d3436;
    margin: 0;
}

.calc-card {
    background: var(--card);
    max-width: 650px;
    width: 100%;
    padding: 40px;
    border-radius: 0;
    box-shadow: 0 15px 45px rgba(0,0,0,0.06);
    position: relative;
}

.progress-wrapper { margin-bottom: 35px; }
.progress-info { font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--accent); margin-bottom: 8px; display: block; }
.progress-bar { height: 4px; background: #eee; border-radius: 0; overflow: hidden; }
.progress-fill { height: 100%; background: var(--accent); width: 33%; transition: width 0.4s ease; }

.step { display: none; animation: fadeIn 0.4s ease forwards; }
.step.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: translateY(0); } }

#calcCard h2 { color: var(--primary); font-size: 26px; margin-bottom: 25px; border-bottom: 1px solid #f1f5f9; padding-bottom: 12px; font-weight: 400; text-transform: uppercase; }

#calcCard label {
    display: block;
    margin-bottom: 10px;
    font-weight: 700;
    font-size: 18px;
    color: var(--primary);
}

#calcCard select, #calcCard input, #calcCard textarea {
    width: 100%; padding: 14px 16px; margin-bottom: 25px; border: 2px solid #edf2f7; border-radius: 0;
    font-size: 16px; font-family: var(--text-body); color: var(--primary); box-sizing: border-box; background-color: #fcfdfe; transition: all 0.3s;
}

#calcCard input.invalid, #calcCard select.invalid { border-color: var(--error) !important; background-color: #fffafa; }

.info-box, .explanation-box, .hint-accent {
    font-size: 16px;
    font-weight: 400;
    line-height: 1.6;
    background-color: transparent;
    color: #2d3436;
    padding: 24px;
    border-radius: 0;
    margin-bottom: 30px;
    border: 2px solid var(--accent);
}
.info-box a, .explanation-box a { color: var(--accent); text-decoration: underline; font-weight: 700; }
.info-box strong, .explanation-box strong { display: block; margin-bottom: 6px; font-size: 18px; font-weight: 800; color: var(--accent); }

.info-box ul { margin: 10px 0; padding-left: 20px; }
.info-box li { margin-bottom: 8px; }

.contact-highlight {
    color: var(--accent) !important;
    text-decoration: underline !important;
    font-weight: 700;
    white-space: nowrap;
}

.field-error { color: var(--error); font-size: 14px; margin-top: -15px; margin-bottom: 20px; display: none; font-weight: 700; }

.btn {
    width: 100%; padding: 20px; border: none; border-radius: 0;
    font-weight: 800; cursor: pointer; font-size: 16px; transition: 0.3s;
    text-transform: uppercase; letter-spacing: 0.5px;
}
.btn-primary { background: var(--accent); color: #ffffff; }
.btn-primary:hover { filter: brightness(1.1); }
.btn-back { display: block; width: 100%; text-align: center; margin-top: 15px; background: none; border: none; color: #94a3b8; font-size: 14px; text-decoration: underline; cursor: pointer; }

.success-box { border: 2px solid #bbf7d0; background: #f0fdf4; color: #166534; padding: 30px; text-align: center; }

.checkbox-wrapper { display: flex; align-items: flex-start; gap: 12px; margin-bottom: 20px; cursor: pointer; font-size: 15px; }
.checkbox-wrapper input { width: auto; margin: 0; margin-top: 5px; }

.modal-overlay {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(255,255,255,0.98); display: none; flex-direction: column;
    align-items: center; justify-content: center; padding: 40px; text-align: center; z-index: 10;
}

.warning-icon {
    width: 60px;
    height: 60px;
    background-color: var(--accent);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    color: white;
    font-size: 32px;
    font-weight: 800;
}