/* =============================================
   TikTok Revenue Calculator - Stylesheet
   ============================================= */

/* --- Variables --- */
:root {
    --red: #010101;
    --red-dark: #69c9d0;
    --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::before { content: "▶"; color: var(--red); 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: 600px; 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(--red); }
.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-subtitle { color: var(--gray); font-size: 1rem; margin-bottom: var(--spacing-lg); }

/* --- 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(--red), var(--red-dark)); color: var(--white); }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 6px 20px rgba(105,201,208,0.35); }
.btn-secondary { background: var(--light); color: var(--gray-dark); border: 1px solid var(--border); }
.btn-secondary:hover { background: var(--border); }

/* --- Calculator Section --- */
.calculator { background: var(--light); }
.calculator-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    align-items: start;
}
.input-section, .results-section {
    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(--red); }
.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(--red); }
.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(--red);
    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; }
.input-section .btn { width: 100%; justify-content: center; margin-top: 0.5rem; }
.input-section .btn + .btn { margin-top: 0.75rem; }

/* --- 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(--red); }
.result-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--light);
    font-size: 0.95rem;
}
.result-row.highlight {
    background: #fff5f5;
    padding: 0.75rem 1rem;
    border-radius: var(--radius-sm);
    border: none;
    margin: 0.4rem 0;
}
.result-row.annual { border-bottom: none; }
.result-label { color: var(--gray); }
.result-value { font-weight: 700; color: var(--dark); font-size: 1.1rem; }
.result-row.highlight .result-value { color: var(--red); font-size: 1.25rem; }
.result-row.annual .result-value { color: var(--success); font-size: 1.3rem; }

/* --- Breakdown --- */
.breakdown { margin-top: var(--spacing-md); padding-top: var(--spacing-md); border-top: 2px solid var(--light); }
.breakdown h4 { font-size: 1rem; color: var(--dark); margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0.4rem; }
.breakdown h4 i { color: var(--red); }
.breakdown-item { display: flex; justify-content: space-between; padding: 0.4rem 0; font-size: 0.9rem; }
.breakdown-label { color: var(--gray); }
.breakdown-value { font-weight: 600; color: var(--dark); }

/* --- 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(--red);
}
.disclaimer p { margin: 0; }
.disclaimer i { color: var(--red); }

/* --- Sharing --- */
.sharing { margin-top: var(--spacing-md); }
.sharing p { font-size: 0.9rem; color: var(--gray); margin-bottom: 0.5rem; }
.share-buttons { display: flex; gap: 0.5rem; flex-wrap: wrap; }
.share-btn {
    padding: 0.5rem 1rem;
    border-radius: var(--radius-sm);
    border: none;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    transition: opacity 0.2s;
}
.share-btn:hover { opacity: 0.85; }
.share-btn.twitter { background: #1da1f2; color: white; }
.share-btn.facebook { background: #1877f2; color: white; }
.share-btn.reddit { background: #ff4500; color: white; }

/* --- AdSense placeholders --- */
.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;
}
.adsense-sidebar { grid-column: auto; }
.ad-placeholder { color: var(--gray); font-family: monospace; }
.ad-placeholder p { color: var(--red); font-weight: 600; margin-bottom: 0.25rem; }
.ad-placeholder small { font-size: 0.8rem; color: var(--gray); }

/* --- How It Works --- */
.how-it-works { background: var(--white); }
.explanation { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-lg); margin-top: var(--spacing-lg); }
.step {
    text-align: center;
    padding: var(--spacing-lg);
    background: var(--light);
    border-radius: var(--radius-lg);
    border-top: 4px solid var(--red);
}
.step-icon {
    width: 56px; height: 56px;
    background: var(--red);
    color: white;
    border-radius: 50%;
    display: flex; align-items: center; justify-content: center;
    font-size: 1.5rem; font-weight: 800;
    margin: 0 auto var(--spacing-md);
}
.step h3 { color: var(--dark); margin-bottom: 0.5rem; font-size: 1.1rem; }
.step p { color: var(--gray); font-size: 0.95rem; margin: 0; }

/* --- CPM Data Table --- */
.cpm-data { background: var(--light); }
.cpm-table-container { overflow-x: auto; border-radius: var(--radius-lg); box-shadow: var(--shadow); }
.cpm-table { width: 100%; border-collapse: collapse; background: var(--white); font-size: 0.9rem; }
.cpm-table thead { background: var(--dark); color: var(--white); }
.cpm-table th { padding: 1rem; text-align: left; font-weight: 600; white-space: nowrap; }
.cpm-table td { padding: 0.85rem 1rem; border-bottom: 1px solid var(--border); }
.cpm-table tbody tr:hover { background: #fafafa; }
.cpm-table .high-cpm td:first-child { border-left: 4px solid #28a745; }
.cpm-table .medium-high td:first-child { border-left: 4px solid #ffc107; }
.cpm-table .medium td:first-child { border-left: 4px solid #17a2b8; }
.cpm-table .medium-low td:first-child { border-left: 4px solid #fd7e14; }
.cpm-table .low td:first-child { border-left: 4px solid var(--gray-light); }
.cpm-notes {
    margin-top: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}
.cpm-notes h3 { color: var(--dark); margin-bottom: var(--spacing-sm); display: flex; align-items: center; gap: 0.4rem; }
.cpm-notes h3 i { color: var(--red); }
.cpm-notes li { color: var(--gray); font-size: 0.95rem; }

/* --- 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(--red); 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.open { display: block; }
.faq-answer p { margin-bottom: 0.5rem; }
.faq-answer ul, .faq-answer ol { margin: 0.5rem 0; }

/* --- Guide Section --- */
.guide-section { background: var(--light); }
.guide-content { display: grid; gap: var(--spacing-lg); }
.guide-content .guide-section {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow);
}
.guide-content .guide-section h3 { color: var(--dark); margin-bottom: var(--spacing-sm); display: flex; align-items: center; gap: 0.5rem; }
.guide-content .guide-section h3 i { color: var(--red); }
.factor-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: var(--spacing-md); margin-top: var(--spacing-sm); }
.factor { background: var(--light); border-radius: var(--radius-md); padding: var(--spacing-md); border-left: 4px solid var(--red); }
.factor h4 { color: var(--dark); margin-bottom: 0.4rem; font-size: 0.95rem; }
.factor p { color: var(--gray); font-size: 0.9rem; margin: 0; }
.earnings-examples { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); margin-top: var(--spacing-sm); }
.example { background: var(--light); border-radius: var(--radius-md); padding: var(--spacing-md); }
.example h4 { color: var(--dark); margin-bottom: 0.5rem; font-size: 1rem; }
.example ul { color: var(--gray); font-size: 0.9rem; }
.myths { display: grid; gap: var(--spacing-md); margin-top: var(--spacing-sm); }
.myth { background: #fff5f5; border-radius: var(--radius-md); padding: var(--spacing-md); border-left: 4px solid var(--red); }
.myth h4 { color: var(--red-dark); margin-bottom: 0.4rem; }
.myth p { color: var(--gray); font-size: 0.9rem; margin: 0; }

/* --- Resources / Gear --- */
.resources { background: var(--white); }
.affiliate-disclosure {
    background: #fffbf0;
    border: 1px solid #ffc107;
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    font-size: 0.9rem;
    color: var(--gray-dark);
}
.affiliate-disclosure i { color: #ffc107; }
.gear-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--spacing-md); }
.gear-card {
    background: var(--light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    border: 1px solid var(--border);
    display: flex; flex-direction: column;
}
.gear-category {
    font-size: 0.8rem; font-weight: 700; text-transform: uppercase;
    letter-spacing: 0.05em; color: var(--red);
    margin-bottom: 0.5rem;
}
.gear-card h3 { color: var(--dark); margin-bottom: 0.5rem; font-size: 1.05rem; }
.gear-card p { color: var(--gray); font-size: 0.9rem; flex: 1; margin-bottom: var(--spacing-md); }
.affiliate-link {
    display: inline-flex; align-items: center; justify-content: center; gap: 0.4rem;
    background: linear-gradient(135deg, var(--red), var(--red-dark));
    color: white; padding: 0.7rem 1.25rem;
    border-radius: var(--radius-md); font-weight: 600; font-size: 0.9rem;
    transition: all 0.2s; margin-top: auto;
}
.affiliate-link:hover { transform: translateY(-2px); box-shadow: 0 5px 15px rgba(105,201,208,0.25); }

/* --- 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(3, 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-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-container { grid-template-columns: 1fr; }
    .gear-grid { grid-template-columns: repeat(2, 1fr); }
    .explanation { grid-template-columns: 1fr; }
    .earnings-examples { grid-template-columns: 1fr; }
    .factor-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
    .nav-links { display: none; }
    .hero-stats { gap: 1.5rem; }
    .footer-content { grid-template-columns: 1fr; }
    .gear-grid { grid-template-columns: 1fr; }
    .share-buttons { flex-direction: column; }
    .calculator-container { gap: var(--spacing-md); }
}