/* =============================================
   Sponsorship Rate Calculator - Stylesheet
   ============================================= */

/* --- Variables --- */
:root {
    --brand: #f59e0b;
    --brand-dark: #d97706;
    --brand-glow: rgba(245, 158, 11, 0.25);
    --dark: #1a1a2e;
    --gray-dark: #333;
    --gray: #666;
    --gray-light: #ccc;
    --light: #f8f9fa;
    --white: #fff;
    --success: #28a745;
    --border: #e0e0e0;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --shadow: 0 2px 12px rgba(0,0,0,0.08);
    --shadow-lg: 0 8px 30px rgba(0,0,0,0.12);
    --spacing-xs: 0.5rem;
    --spacing-sm: 0.75rem;
    --spacing-md: 1.25rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
}

/* --- Reset --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body { font-family: 'Segoe UI', system-ui, -apple-system, sans-serif; color: var(--gray-dark); background: var(--white); line-height: 1.6; }
a { text-decoration: none; color: inherit; }
ul, ol { padding-left: 1.5rem; }
li { margin-bottom: 0.4rem; }
p { margin-bottom: 0.75rem; }
h1,h2,h3,h4 { line-height: 1.3; }

/* --- Container --- */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }

/* --- Navbar --- */
.navbar {
    background: var(--dark);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0,0,0,0.3);
}
.navbar .container { display: flex; align-items: center; justify-content: space-between; }
.navbar .logo {
    color: var(--white);
    font-size: 1.25rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.navbar .logo i { color: var(--brand); font-size: 1.1rem; }
.nav-links { display: flex; gap: 1.5rem; }
.nav-links a { color: rgba(255,255,255,0.8); font-size: 0.95rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--white); }

/* --- Hero --- */
.hero {
    background: linear-gradient(135deg, var(--dark) 0%, #16213e 60%, #0f3460 100%);
    color: var(--white);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}
.hero h1 { font-size: clamp(2rem, 4vw, 3rem); font-weight: 800; margin-bottom: 1rem; }
.hero .subtitle { font-size: 1.15rem; color: rgba(255,255,255,0.8); max-width: 650px; margin-bottom: var(--spacing-lg); }
.hero-stats { display: flex; gap: 2rem; flex-wrap: wrap; margin-bottom: var(--spacing-lg); }
.stat { text-align: center; }
.stat-number { font-size: 2rem; font-weight: 800; color: var(--brand); }
.stat-label { font-size: 0.85rem; color: rgba(255,255,255,0.7); margin-top: 0.25rem; }

/* --- Section base --- */
section { padding: var(--spacing-xl) 0; }
section h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; color: var(--dark); margin-bottom: 0.5rem; }
.section-header { text-align: center; margin-bottom: var(--spacing-lg); }
.section-header .subtitle { color: var(--gray); font-size: 1rem; }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.85rem 1.75rem;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}
.btn-primary { background: linear-gradient(135deg, var(--brand), var(--brand-dark)); color: var(--white); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px var(--brand-glow); }
.btn-secondary { background: var(--light); color: var(--gray-dark); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }

/* --- Calculator Section --- */
.calculator-section { background: var(--light); }
.calculator-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}
.input-panel, .results-panel {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}
.input-group { margin-bottom: var(--spacing-md); }
.input-group label {
    display: flex;
    align-items: center;
    gap: 0.4rem;
    font-weight: 600;
    color: var(--dark);
    margin-bottom: 0.5rem;
    font-size: 0.95rem;
}
.input-group label i { color: var(--brand); }
.input-group input[type="number"],
.input-group select {
    width: 100%;
    padding: 0.65rem 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius-sm);
    font-size: 1rem;
    color: var(--gray-dark);
    background: var(--white);
    transition: border-color 0.2s;
}
.input-group input[type="number"]:focus,
.input-group select:focus { outline: none; border-color: var(--brand); }
.input-with-slider { display: flex; align-items: center; gap: 0.75rem; flex-wrap: wrap; }
.input-with-slider input[type="number"] { width: 120px; flex-shrink: 0; }
.input-with-slider input[type="range"] {
    flex: 1;
    accent-color: var(--brand);
    height: 4px;
    min-width: 100px;
}
.percent { font-weight: 600; color: var(--gray); }
.input-hint { font-size: 0.8rem; color: var(--gray); margin-top: 0.35rem; }

/* --- Podcast downloads (conditional) --- */
.podcast-only { display: none; }
.podcast-only.visible { display: block; }

/* --- Results --- */
.results-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 2px solid var(--border);
}
.results-card h3 {
    color: var(--dark);
    font-size: 1.25rem;
    margin-bottom: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}
.results-card h3 i { color: var(--brand); }

/* --- Rate Range Display --- */
.rate-range-display {
    display: flex;
    align-items: stretch;
    gap: 0;
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow: hidden;
    border: 2px solid var(--border);
}
.rate-tier {
    flex: 1;
    text-align: center;
    padding: var(--spacing-md) var(--spacing-sm);
}
.rate-tier.low { background: #fef9e7; }
.rate-tier.recommended { background: #fef3c7; border-left: 2px solid var(--brand); border-right: 2px solid var(--brand); }
.rate-tier.premium { background: #fdf2f8; }
.rate-tier-label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; margin-bottom: 0.25rem; }
.rate-tier.low .rate-tier-label { color: #92400e; }
.rate-tier.recommended .rate-tier-label { color: var(--brand-dark); }
.rate-tier.premium .rate-tier-label { color: #9d174d; }
.rate-tier-value { font-size: 1.5rem; font-weight: 800; color: var(--dark); }
.rate-tier.recommended .rate-tier-value { font-size: 1.75rem; color: var(--brand-dark); }
.rate-tier-note { font-size: 0.7rem; color: var(--gray); margin-top: 0.25rem; }

/* --- Rate Factors --- */
.rate-factors { margin-bottom: var(--spacing-md); }
.rate-factors h4 { font-size: 0.95rem; color: var(--dark); margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.4rem; }
.rate-factors h4 i { color: var(--brand); }
.factor-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.4rem 0.6rem;
    font-size: 0.88rem;
    border-radius: var(--radius-sm);
    margin-bottom: 0.25rem;
}
.factor-item.positive { background: #f0fdf4; }
.factor-item.negative { background: #fef2f2; }
.factor-item.neutral { background: var(--light); }
.factor-label { color: var(--gray-dark); }
.factor-value { font-weight: 700; }
.factor-item.positive .factor-value { color: var(--success); }
.factor-item.negative .factor-value { color: #dc2626; }
.factor-item.neutral .factor-value { color: var(--gray); }

/* --- Tier Badge --- */
.tier-badge-container {
    background: var(--light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}
.tier-badge-container h4 { font-size: 0.95rem; color: var(--dark); margin-bottom: 0.5rem; display: flex; align-items: center; gap: 0.4rem; }
.tier-badge-container h4 i { color: var(--brand); }
.tier-badge {
    display: inline-block;
    padding: 0.3rem 0.9rem;
    border-radius: 20px;
    font-weight: 700;
    font-size: 0.85rem;
    margin-right: 0.5rem;
}
.tier-badge.nano { background: #dbeafe; color: #1e40af; }
.tier-badge.micro { background: #d1fae5; color: #065f46; }
.tier-badge.mid { background: #fef3c7; color: #92400e; }
.tier-badge.macro { background: #fce7f3; color: #9d174d; }
.tier-badge.mega { background: #ede9fe; color: #5b21b6; }
.tier-benchmark { font-size: 0.85rem; color: var(--gray); margin-top: 0.4rem; }
.tier-benchmark strong { color: var(--dark); }

/* --- Negotiation Tip --- */
.negotiation-tip {
    background: linear-gradient(135deg, #fffbeb 0%, #fef3c7 100%);
    border-left: 4px solid var(--brand);
    border-radius: var(--radius-sm);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}
.negotiation-tip h4 { font-size: 0.95rem; color: var(--brand-dark); margin-bottom: 0.4rem; display: flex; align-items: center; gap: 0.4rem; }
.negotiation-tip p { color: var(--gray-dark); font-size: 0.9rem; margin: 0; }

/* --- Monthly Income Estimate --- */
.monthly-estimate {
    background: var(--light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    text-align: center;
}
.monthly-estimate h4 { font-size: 0.95rem; color: var(--dark); margin-bottom: 0.5rem; }
.monthly-estimate .estimate-value { font-size: 1.5rem; font-weight: 800; color: var(--brand-dark); }
.monthly-estimate .estimate-detail { font-size: 0.8rem; color: var(--gray); margin-top: 0.25rem; }

/* --- Copy Rate Card Button --- */
.copy-rate-card {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--dark);
    color: var(--white);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.2s;
    margin-bottom: var(--spacing-md);
}
.copy-rate-card:hover { background: #2d2d4a; transform: translateY(-1px); }
.copy-rate-card.copied { background: var(--success); }

/* --- Disclaimer --- */
.disclaimer {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--light);
    border-radius: var(--radius-sm);
    font-size: 0.82rem;
    color: var(--gray);
    border-left: 3px solid var(--brand);
}
.disclaimer p { margin: 0; }
.disclaimer i { color: var(--brand); }

/* --- AdSense --- */
.adsense-container {
    margin: var(--spacing-md) 0;
    text-align: center;
    border: 2px dashed var(--gray-light);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    background: var(--light);
    grid-column: 1 / -1;
}

/* --- Benchmark Data Table --- */
.benchmark-section { background: var(--light); }
.benchmark-table-container { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.benchmark-table { width: 100%; border-collapse: collapse; background: var(--white); font-size: 0.9rem; }
.benchmark-table thead { background: var(--dark); color: var(--white); }
.benchmark-table th { padding: 1rem; text-align: left; font-weight: 600; white-space: nowrap; }
.benchmark-table td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--border); }
.benchmark-table tbody tr:hover { background: #fafafa; }
.benchmark-table .high td:first-child { border-left: 4px solid var(--success); }
.benchmark-table .medium td:first-child { border-left: 4px solid var(--brand); }
.benchmark-table .low td:first-child { border-left: 4px solid #17a2b8; }

/* --- Guide Section --- */
.guide-section { background: var(--white); }
.guide-steps { display: flex; flex-direction: column; gap: var(--spacing-lg); max-width: 900px; margin: 0 auto; }
.guide-step {
    display: flex;
    gap: var(--spacing-lg);
    background: var(--light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--brand);
}
.step-number {
    width: 48px; height: 48px; min-width: 48px;
    background: var(--brand);
    color: white;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.25rem; font-weight: 800;
}
.step-content h3 { color: var(--dark); font-size: 1.1rem; margin-bottom: 0.5rem; }
.step-content p { color: var(--gray); font-size: 0.95rem; }
.step-content ul { color: var(--gray); font-size: 0.95rem; }
.step-content em { color: var(--brand-dark); }

/* --- Educational Content --- */
.education-section { background: var(--light); }
.education-content {
    max-width: 800px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}
.education-content h3 { color: var(--dark); margin-bottom: 0.75rem; margin-top: 1.5rem; font-size: 1.15rem; }
.education-content h3:first-child { margin-top: 0; }
.education-content p { color: var(--gray-dark); font-size: 0.95rem; }
.education-content ul { color: var(--gray-dark); font-size: 0.95rem; }
.education-content strong { color: var(--dark); }

/* --- FAQ --- */
.faq-section { background: var(--white); }
.faq-container { max-width: 800px; margin: 0 auto; }
.faq-item { border: 1px solid var(--border); border-radius: var(--radius-md); margin-bottom: 0.75rem; overflow: hidden; }
.faq-question {
    width: 100%; background: var(--white); border: none; cursor: pointer;
    padding: 1.1rem var(--spacing-md);
    display: flex; align-items: center; justify-content: space-between;
    font-size: 1rem; font-weight: 600; color: var(--dark); text-align: left;
    transition: background 0.2s;
}
.faq-question:hover { background: var(--light); }
.faq-question i { color: var(--brand); transition: transform 0.3s; flex-shrink: 0; margin-left: 1rem; }
.faq-answer { padding: 0 var(--spacing-md) var(--spacing-md); color: var(--gray); font-size: 0.95rem; display: none; }
.faq-answer.active { display: block; }
.faq-answer p { margin-bottom: 0.5rem; }
.faq-answer ul, .faq-answer ol { margin: 0.5rem 0; }

/* --- Related Tools --- */
.related-section { background: var(--light); }
.related-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.related-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    text-align: center;
    transition: all 0.2s;
}
.related-card:hover { transform: translateY(-3px); box-shadow: var(--shadow-lg); }
.related-card i { font-size: 2rem; color: var(--brand); margin-bottom: 0.75rem; }
.related-card h3 { font-size: 1rem; color: var(--dark); margin-bottom: 0.5rem; }
.related-card p { font-size: 0.85rem; color: var(--gray); margin-bottom: 1rem; }
.related-card .btn { font-size: 0.85rem; padding: 0.6rem 1.25rem; }

/* --- Footer --- */
footer { background: var(--dark); color: rgba(255,255,255,0.8); padding: var(--spacing-xl) 0 var(--spacing-md); }
.footer-content { display: grid; grid-template-columns: repeat(4, 1fr); gap: var(--spacing-lg); margin-bottom: var(--spacing-lg); }
.footer-section h3 { color: var(--white); font-size: 1rem; margin-bottom: 0.75rem; }
.footer-section p { font-size: 0.9rem; margin-bottom: 0.4rem; }
.footer-section a { display: block; color: rgba(255,255,255,0.7); font-size: 0.9rem; margin-bottom: 0.4rem; transition: color 0.2s; }
.footer-section a:hover { color: var(--white); }
.footer-logo { display: flex; align-items: center; gap: 0.5rem; font-size: 1.1rem; font-weight: 700; color: var(--white); margin-bottom: 0.5rem; }
.footer-logo i { color: var(--brand); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,0.1); padding-top: var(--spacing-md); text-align: center; font-size: 0.85rem; color: rgba(255,255,255,0.5); }

/* --- Responsive --- */
@media (max-width: 1024px) {
    .calculator-wrapper { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: repeat(2, 1fr); }
    .footer-content { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-stats { gap: 1.5rem; }
    .footer-content { grid-template-columns: 1fr; }
    .related-grid { grid-template-columns: 1fr; }
    .guide-step { flex-direction: column; }
    .rate-range-display { flex-direction: column; }
    .rate-tier.recommended { border-left: none; border-right: none; border-top: 2px solid var(--brand); border-bottom: 2px solid var(--brand); }
}

/* --- Hamburger (inline override) --- */
.hamburger {
    display: none;
    background: none;
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}
@media (max-width: 768px) {
    .hamburger { display: block; }
    .nav-links {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: #1a1a2e;
        flex-direction: column;
        padding: 1rem;
        border-top: 1px solid rgba(255,255,255,0.1);
    }
    .nav-links.active { display: flex; }
    .nav-links a { padding: 0.75rem 0; border-bottom: 1px solid rgba(255,255,255,0.05); }
    .navbar .container { position: relative; }
}