/* Base Variables & Reset */
:root {
    --primary: #0ea5e9;       /* TempFit Blue */
    --primary-dark: #0284c7;
    --bg-color: #f1f5f9;      /* Off white/gray for contrast */
    --card-bg: #ffffff;
    --text-main: #0f172a;
    --text-muted: #64748b;
    --border: #e2e8f0;
    
    /* Gauge Colors */
    --gauge-under: #fbbf24;   /* Yellow */
    --gauge-optimal: #22c55e; /* Green */
    --gauge-over: #ef4444;    /* Red */
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 16px;
}

/* Header */
.site-header {
    background: var(--card-bg);
    padding: 16px 0;
    box-shadow: 0 1px 3px rgba(0,0,0,0.05);
    margin-bottom: 24px;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 22px;
    font-weight: 700;
    color: var(--text-main);
}
.logo span { color: var(--primary); }

.pill-nav a {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 14px;
    font-weight: 500;
    padding: 6px 12px;
    border-radius: 20px;
    margin-left: 8px;
}
.pill-nav a.active {
    background: var(--bg-color);
    color: var(--primary);
}

/* Hero Section */
.hero { text-align: center; margin-bottom: 32px; }
.hero h1 { font-size: 24px; margin-bottom: 8px; }
.hero p { color: var(--text-muted); font-size: 15px; }

/* Layout Grid */
.calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
    margin-bottom: 40px;
}

@media(min-width: 768px) {
    .calculator-wrapper { grid-template-columns: 3fr 2fr; align-items: start; }
    .results-card { position: sticky; top: 24px; } /* Sticks to side on desktop */
}

/* Cards */
.card {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 24px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -2px rgba(0,0,0,0.05);
}

.section-title { font-size: 16px; font-weight: 600; margin-bottom: 16px; color: var(--text-main); }
.divider { border: 0; height: 1px; background: var(--border); margin: 24px 0; }

/* Form Elements */
.input-group { margin-bottom: 16px; }
.input-group label { display: block; font-size: 14px; font-weight: 500; margin-bottom: 8px; color: var(--text-main); }

/* Form Inputs */
input[type="number"],
input[type="text"],
input[type="email"],
textarea {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px; /* Prevents iOS auto-zoom */
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: inherit;
    outline: none;
    transition: border-color 0.2s;
    background: #ffffff;
}
input[type="number"]:focus,
input[type="text"]:focus,
input[type="email"]:focus,
textarea:focus { 
    border-color: var(--primary); 
}
textarea {
    resize: vertical;
    min-height: 120px;
}

/* Alert Messages for Contact Form */
.alert {
    padding: 16px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    font-weight: 500;
}
.alert-success {
    background-color: #dcfce7;
    color: #166534;
    border: 1px solid #bbf7d0;
}
.alert-error {
    background-color: #fee2e2;
    color: #991b1b;
    border: 1px solid #fecaca;
}

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; }

/* Radio Pills (Mobile Friendly) */
.radio-pills { display: flex; gap: 8px; }
.radio-pills input[type="radio"] { display: none; }
.radio-pills label {
    flex: 1;
    text-align: center;
    padding: 10px 4px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-muted);
}
.radio-pills input[type="radio"]:checked + label {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Checkbox Pill */
.checkbox-pill input[type="checkbox"] { display: none; }
.checkbox-pill label {
    display: block;
    text-align: center;
    padding: 10px;
    font-size: 14px;
    font-weight: 500;
    border: 1px solid var(--border);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-muted);
}
.checkbox-pill input[type="checkbox"]:checked + label {
    background: #475569; /* Dark gray for toggles */
    color: white;
    border-color: #475569;
}

/* Results Card */
.results-card { background: #0f172a; color: white; text-align: center; }
.result-header p { font-size: 14px; color: #94a3b8; text-transform: uppercase; letter-spacing: 0.5px; }
.result-header h2 { font-size: 36px; font-weight: 700; margin: 8px 0; color: #38bdf8; }

/* Visual Gauge */
.gauge-wrapper { margin: 24px 0; }
.gauge-labels { display: flex; justify-content: space-between; font-size: 11px; color: #94a3b8; margin-bottom: 6px; }
.gauge-bar { display: flex; height: 12px; border-radius: 6px; overflow: hidden; position: relative; }
.zone.under { flex: 1.5; background: var(--gauge-under); }
.zone.optimal { flex: 2; background: var(--gauge-optimal); }
.zone.over { flex: 1.5; background: var(--gauge-over); }

/* The little arrow showing where you land */
.gauge-marker {
    position: absolute;
    top: -2px;
    bottom: -2px;
    width: 4px;
    background: white;
    border-radius: 2px;
    left: 50%; /* JS will update this */
    transform: translateX(-50%);
    box-shadow: 0 0 4px rgba(0,0,0,0.5);
    transition: left 0.3s ease;
}
.gauge-values { display: flex; justify-content: space-between; font-size: 12px; color: #64748b; margin-top: 6px; }

/* Detail Boxes */
.result-details { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 24px; }
.detail-box { background: #1e293b; padding: 12px; border-radius: 8px; }
.detail-label { display: block; font-size: 12px; color: #94a3b8; margin-bottom: 4px; }
.detail-value { font-size: 18px; font-weight: 600; color: white; }

/* Call to Action */
.cta-button {
    width: 100%;
    background: var(--primary);
    color: white;
    border: none;
    padding: 16px;
    font-size: 16px;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: background 0.2s;
}
.cta-button:hover { background: var(--primary-dark); }

/* Breaker Warning Banner */
.breaker-banner {
    background-color: #7f1d1d;
    color: #fecaca;
    border: 1px solid #dc2626;
    border-radius: 8px;
    padding: 12px;
    font-size: 13px;
    margin-bottom: 20px;
    text-align: left;
    line-height: 1.4;
}

/* Programmatic SEO Long-Form Article */
.p-seo-content {
    margin-top: 32px;
    line-height: 1.7;
    color: #334155;
}
.p-seo-content h2 {
    font-size: 20px;
    color: var(--text-main);
    margin-bottom: 12px;
}
.p-seo-content h3 {
    font-size: 16px;
    color: var(--text-main);
    margin: 16px 0 8px;
}
.p-seo-content p {
    margin-bottom: 14px;
}

/* Site Footer */
.site-footer {
    padding: 32px 0;
    text-align: center;
    font-size: 13px;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
    margin-top: 40px;
}
.footer-disclaimer {
    font-size: 11px;
    margin-top: 6px;
    color: #94a3b8;
}