:root {
    --primary-blue: #3b82f6;
    --primary-blue-dark: #2563eb;
    --primary-blue-light: #60a5fa;
    --sky-blue: #0ea5e9;
    --sky-blue-light: #e0f2fe;
    --success-green: #10b981;
    --warning-yellow: #f59e0b;
    --danger-red: #ef4444;
    --india-orange: #f97316;
    --india-green: #16a34a;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    color: var(--gray-800);
    line-height: 1.6;
}
.calculator-container {
    background: white;
    border-radius: 12px;
    box-shadow: 0 2px 20px rgba(0,0,0,0.09);
    overflow: hidden;
    border: 1px solid var(--gray-200);
    max-width: 1200px;
    width: 100%;
    margin: 8px auto 32px auto;
}

/* ── HEADER ── */
.calculator-header {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--sky-blue) 100%);
    color: white;
    padding: 22px 30px 18px;
    text-align: center;
    position: relative;
}
.calculator-header p { font-size: 0.92rem; opacity: 0.85; margin-bottom: 16px; }

/* ── COUNTRY SWITCHER ── */
.country-switcher {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    background: rgba(255,255,255,0.15);
    border: 1.5px solid rgba(255,255,255,0.3);
    border-radius: 40px;
    padding: 6px 8px 6px 16px;
    backdrop-filter: blur(8px);
}
.country-switcher label {
    font-size: 0.82rem;
    font-weight: 600;
    color: rgba(255,255,255,0.85);
    letter-spacing: 0.3px;
    white-space: nowrap;
}
.country-select-wrap { position: relative; }
.country-select {
    appearance: none;
    background: white;
    color: var(--gray-900);
    border: none;
    border-radius: 24px;
    padding: 8px 36px 8px 14px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    outline: none;
    min-width: 160px;
}
.country-select-wrap::after {
    content: '▾';
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.8rem;
    color: var(--gray-500);
    pointer-events: none;
}

/* Country banner */
.country-banner {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 10px 20px;
    font-size: 0.82rem;
    font-weight: 600;
    border-bottom: 1px solid var(--gray-200);
}
.country-banner.us { background: #eff6ff; color: #1d4ed8; }
.country-banner.india { background: #fff7ed; color: #c2410c; }

/* ── TABS ── */
.tabs {
    display: flex;
    background: var(--gray-100);
    border-bottom: 2px solid var(--gray-200);
    overflow-x: auto;
}
.tab-button {
    flex: 1;
    padding: 16px 18px;
    background: none;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--gray-700);
    transition: all 0.2s;
    white-space: nowrap;
    position: relative;
    min-width: 140px;
}
.tab-button:hover { background: var(--gray-200); }
.tab-button.active { color: var(--primary-blue); background: white; }
.tab-button.active::after { content: ''; position: absolute; bottom: -2px; left: 0; right: 0; height: 2px; background: var(--primary-blue); }

/* ── TAB CONTENT ── */
.tab-content { display: none; padding: 32px 24px; animation: fadeIn 0.25s ease; max-width: 1280px; margin: 0 auto; }
.tab-content.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: translateY(0); } }

/* ── SECTION ── */
.section { margin-bottom: 36px; }
.section-title {
    font-size: 1.4rem;
    color: var(--gray-900);
    margin-bottom: 18px;
    padding-bottom: 10px;
    border-bottom: 2px solid var(--primary-blue);
    display: flex;
    align-items: center;
    gap: 10px;
}

/* ── OFFER CARDS ── */
.offers-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; margin-bottom: 24px; }
.offer-card {
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: 12px;
    padding: 22px;
    transition: all 0.2s;
}
.offer-card:hover { border-color: var(--primary-blue); box-shadow: 0 4px 12px rgba(59,130,246,0.1); }
.offer-card-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; }
.offer-card-title { font-size: 1.2rem; font-weight: 700; color: var(--primary-blue); }
.remove-offer { background: var(--danger-red); color: white; border: none; padding: 5px 12px; border-radius: 6px; cursor: pointer; font-size: 0.82rem; transition: background 0.2s; }
.remove-offer:hover { background: #dc2626; }

/* ── FORMS ── */
.form-group { margin-bottom: 18px; }
.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 18px; }
label { display: block; font-weight: 600; color: var(--gray-700); margin-bottom: 7px; font-size: 0.9rem; }
.label-with-tooltip { display: flex; align-items: center; gap: 6px; }
.tooltip { position: relative; display: inline-block; cursor: help; }
.tooltip-icon { width: 17px; height: 17px; background: var(--primary-blue-light); color: white; border-radius: 50%; display: inline-flex; align-items: center; justify-content: center; font-size: 11px; font-weight: bold; }
.tooltip-text { visibility: hidden; width: 240px; background: var(--gray-900); color: white; text-align: left; border-radius: 8px; padding: 10px 12px; position: absolute; z-index: 1000; bottom: 130%; left: 50%; margin-left: -120px; opacity: 0; transition: opacity 0.25s; font-size: 0.8rem; font-weight: normal; line-height: 1.4; box-shadow: 0 4px 12px rgba(0,0,0,0.2); }
.tooltip-text::after { content: ""; position: absolute; top: 100%; left: 50%; margin-left: -5px; border-width: 5px; border-style: solid; border-color: var(--gray-900) transparent transparent transparent; }
.tooltip:hover .tooltip-text { visibility: visible; opacity: 1; }
input[type="text"], input[type="number"], select {
    width: 100%;
    padding: 11px 14px;
    border: 2px solid var(--gray-300);
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.2s;
    background: white;
    color: var(--gray-900);
    font-family: inherit;
}
input:focus, select:focus { outline: none; border-color: var(--primary-blue); box-shadow: 0 0 0 3px rgba(59,130,246,0.1); }
.input-group { position: relative; }
.input-prefix { position: absolute; left: 14px; top: 50%; transform: translateY(-50%); color: var(--gray-500); font-weight: 600; font-size: 0.95rem; pointer-events: none; }
.input-group input { padding-left: 30px; }

/* ── BUTTONS ── */
.button { padding: 12px 24px; border: none; border-radius: 8px; font-size: 0.95rem; font-weight: 600; cursor: pointer; transition: all 0.2s; display: inline-flex; align-items: center; gap: 8px; font-family: inherit; }
.button-primary { background: var(--primary-blue); color: white; }
.button-primary:hover { background: var(--primary-blue-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(59,130,246,0.3); }
.button-secondary { background: white; color: var(--primary-blue); border: 2px solid var(--primary-blue); }
.button-secondary:hover { background: var(--primary-blue); color: white; }
.button-group { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 24px; }

/* ── RESULTS ── */
.results-container { background: linear-gradient(135deg, var(--sky-blue-light) 0%, white 100%); border-radius: 12px; padding: 28px; margin-top: 32px; }
.results-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 18px; margin-bottom: 24px; }
.result-card { background: white; border-radius: 10px; padding: 20px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); border-left: 4px solid var(--primary-blue); }
.result-label { font-size: 0.85rem; color: var(--gray-600); margin-bottom: 6px; font-weight: 600; }
.result-value { font-size: 1.8rem; font-weight: 700; color: var(--primary-blue); }
.result-subtext { font-size: 0.8rem; color: var(--gray-500); margin-top: 4px; }

/* ── TABLE ── */
.comparison-table { width: 100%; border-collapse: collapse; margin-top: 24px; background: white; border-radius: 10px; overflow: hidden; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.comparison-table thead { background: var(--primary-blue); color: white; }
.comparison-table th, .comparison-table td { padding: 14px 16px; text-align: left; border-bottom: 1px solid var(--gray-200); font-size: 0.9rem; }
.comparison-table th { font-weight: 700; }
.comparison-table tbody tr:hover { background: var(--gray-50); }
.comparison-table .best-value { background: #d1fae5; font-weight: 700; color: var(--success-green); }

/* ── CHARTS ── */
.chart-container { background: white; border-radius: 10px; padding: 22px; margin-top: 24px; box-shadow: 0 2px 8px rgba(0,0,0,0.08); }
.chart-title { font-size: 1.1rem; font-weight: 700; color: var(--gray-900); margin-bottom: 18px; }
.bar-chart { display: flex; flex-direction: column; gap: 16px; }
.bar-item { display: flex; align-items: center; gap: 14px; }
.bar-label { min-width: 140px; font-weight: 600; color: var(--gray-700); font-size: 0.88rem; }
.bar-wrapper { flex: 1; background: var(--gray-100); border-radius: 8px; height: 38px; overflow: hidden; }
.bar-fill { height: 100%; background: linear-gradient(90deg, var(--primary-blue) 0%, var(--sky-blue) 100%); border-radius: 8px; display: flex; align-items: center; justify-content: flex-end; padding-right: 14px; color: white; font-weight: 700; font-size: 0.85rem; transition: width 0.8s ease; white-space: nowrap; min-width: 60px; }

/* ── ALERTS ── */
.alert { padding: 14px 18px; border-radius: 8px; margin-bottom: 20px; display: flex; align-items: flex-start; gap: 10px; font-size: 0.9rem; }
.alert-info { background: #dbeafe; border-left: 4px solid var(--primary-blue); color: #1e40af; }
.alert-warning { background: #fef3c7; border-left: 4px solid var(--warning-yellow); color: #92400e; }
.alert-success { background: #d1fae5; border-left: 4px solid var(--success-green); color: #065f46; }
.alert-india { background: #fff7ed; border-left: 4px solid var(--india-orange); color: #9a3412; }

/* ── SEO CONTENT ── */
.seo-section {
    padding: 40px 24px;
    background: var(--gray-50);
    border-top: 2px solid var(--gray-200);
}
.seo-section-inner {
    max-width: 1280px;
    margin: 0 auto;
}
.seo-section h2 { font-size: 1.5rem; color: var(--gray-900); margin-bottom: 10px; font-weight: 700; }
.seo-section h3 { font-size: 1.1rem; color: var(--gray-800); margin: 22px 0 8px; font-weight: 700; }
.seo-section p { font-size: 0.9rem; color: var(--gray-600); line-height: 1.8; margin-bottom: 10px; }
.seo-section ul { padding-left: 20px; margin-bottom: 12px; }
.seo-section li { font-size: 0.9rem; color: var(--gray-600); line-height: 1.75; margin-bottom: 4px; }
.seo-section li strong { color: var(--gray-800); }
.seo-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 24px; }
.seo-card { background: white; border: 1px solid var(--gray-200); border-radius: 12px; padding: 24px; }
.seo-card h3 { margin-top: 0; font-size: 1rem; border-bottom: 1px solid var(--gray-200); padding-bottom: 10px; margin-bottom: 14px; }
.tag-cloud { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.tag { background: white; border: 1px solid var(--gray-300); color: var(--gray-700); font-size: 0.78rem; padding: 5px 12px; border-radius: 16px; font-weight: 500; }
.faq-item { border-bottom: 1px solid var(--gray-200); }
.faq-q { padding: 16px 0; font-weight: 600; font-size: 0.9rem; cursor: pointer; display: flex; justify-content: space-between; color: var(--gray-800); user-select: none; }
.faq-q .arr { color: var(--primary-blue); transition: transform 0.2s; }
.faq-item.open .arr { transform: rotate(45deg); }
.faq-a { display: none; padding-bottom: 16px; font-size: 0.88rem; color: var(--gray-600); line-height: 1.8; }
.faq-item.open .faq-a { display: block; }



/* ── INDIA-SPECIFIC ── */
.india-badge { display: inline-block; background: #fff7ed; color: var(--india-orange); border: 1px solid #fed7aa; font-size: 0.72rem; font-weight: 700; padding: 2px 10px; border-radius: 10px; margin-left: 8px; vertical-align: middle; }
.section-title.india-mode { border-color: var(--india-orange); }

/* ── HIDDEN / UTILITY ── */
.mt-20 { margin-top: 20px; }
.mb-20 { margin-bottom: 20px; }

@media (max-width: 768px) {
    .calculator-header p { font-size: 0.85rem; }
    .tabs { flex-direction: column; }
    .tab-button { border-bottom: 1px solid var(--gray-200); }
    .offers-grid, .seo-grid { grid-template-columns: 1fr; }
    .form-row { grid-template-columns: 1fr; }
    .button-group { flex-direction: column; }
    .button { width: 100%; justify-content: center; }
    .bar-item { flex-direction: column; align-items: flex-start; }
    .bar-label { min-width: auto; }
    .tab-content { padding: 20px 16px; }
}