/* === IdleGain Website Styles === */

:root {
    --primary: #6C5CE7;
    --primary-dark: #5A4BD1;
    --primary-light: #A29BFE;
    --accent: #00D2D3;
    --accent-dark: #01A3A4;
    --bg: #FFFFFF;
    --bg-alt: #F8F9FC;
    --text: #1A1A2E;
    --text-muted: #6B7280;
    --border: #E5E7EB;
    --success: #10B981;
    --card-bg: #FFFFFF;
    --card-shadow: 0 1px 3px rgba(0,0,0,0.08), 0 1px 2px rgba(0,0,0,0.06);
    --card-shadow-hover: 0 10px 25px rgba(108,92,231,0.12);
    --radius: 12px;
    --radius-sm: 8px;
    --transition: 0.2s ease;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg: #0F0F1A;
        --bg-alt: #1A1A2E;
        --text: #F0F0F5;
        --text-muted: #9CA3AF;
        --border: #2D2D44;
        --card-bg: #1E1E32;
        --card-shadow: 0 1px 3px rgba(0,0,0,0.3);
        --card-shadow-hover: 0 10px 25px rgba(108,92,231,0.25);
    }
}

/* Language toggle */
html[lang="en"] .zh { display: none !important; }
html[lang="zh"] .en { display: none !important; }

.lang-switch {
    display: inline-flex;
    align-items: center;
    gap: 2px;
    background: var(--bg-alt);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 2px;
    font-size: 0.8rem;
    cursor: pointer;
}
.lang-switch button {
    background: none;
    border: none;
    padding: 4px 10px;
    border-radius: 16px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition);
}
.lang-switch button.active {
    background: var(--primary);
    color: #fff;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1120px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navigation */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.92);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    transition: background var(--transition);
}
@media (prefers-color-scheme: dark) {
    .nav { background: rgba(15,15,26,0.92); }
}

.nav-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
}

.logo {
    font-weight: 800;
    font-size: 1.25rem;
    color: var(--text);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 6px;
}
.logo-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: #fff;
    border-radius: 8px;
    font-weight: 800;
    font-size: 1.1rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 28px;
}
.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color var(--transition);
}
.nav-links a:hover { color: var(--primary); }

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
}
.hamburger span {
    width: 22px;
    height: 2px;
    background: var(--text);
    border-radius: 2px;
    transition: var(--transition);
}

.mobile-menu {
    display: none;
    flex-direction: column;
    padding: 16px 20px;
    gap: 12px;
    border-top: 1px solid var(--border);
}
.mobile-menu a {
    color: var(--text);
    text-decoration: none;
    font-size: 1rem;
    font-weight: 500;
    padding: 8px 0;
}
.mobile-menu.active { display: flex; }

@media (max-width: 768px) {
    .nav-links { display: none; }
    .hamburger { display: flex; }
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-sm);
    font-weight: 600;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition);
    border: none;
    cursor: pointer;
}
.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    box-shadow: 0 2px 8px rgba(108,92,231,0.3);
}
.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 16px rgba(108,92,231,0.4);
}
.btn-outline {
    background: transparent;
    color: var(--text);
    border: 2px solid var(--border);
}
.btn-outline:hover {
    border-color: var(--primary);
    color: var(--primary);
}
.btn-sm { padding: 8px 16px; font-size: 0.85rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }

/* Hero */
.hero {
    padding: 140px 0 80px;
    text-align: center;
    background: linear-gradient(180deg, var(--bg) 0%, var(--bg-alt) 100%);
}
.hero-content { max-width: 720px; margin: 0 auto; }

.hero-badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(108,92,231,0.1);
    color: var(--primary);
    font-size: 0.85rem;
    font-weight: 600;
    border-radius: 20px;
    margin-bottom: 20px;
}
@media (prefers-color-scheme: dark) {
    .hero-badge { background: rgba(108,92,231,0.2); }
}

.hero h1 {
    font-size: 3.2rem;
    font-weight: 800;
    line-height: 1.15;
    margin-bottom: 20px;
    letter-spacing: -0.02em;
}
.gradient-text {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-muted);
    max-width: 560px;
    margin: 0 auto 32px;
    line-height: 1.7;
}

.hero-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
    margin-bottom: 48px;
    flex-wrap: wrap;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    flex-wrap: wrap;
}
.stat { text-align: center; }
.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
}
.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}
.stat-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
}

@media (max-width: 640px) {
    .hero { padding: 120px 0 60px; }
    .hero h1 { font-size: 2.2rem; }
    .hero-subtitle { font-size: 1rem; }
}

/* Sections */
.section {
    padding: 80px 0;
}
.section-alt {
    background: var(--bg-alt);
}
.section-header {
    text-align: center;
    margin-bottom: 48px;
}
.section-header h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 8px;
}
.section-header p {
    color: var(--text-muted);
    font-size: 1.05rem;
}

/* Steps */
.steps {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 32px;
}
.step {
    text-align: center;
    padding: 32px 24px;
    position: relative;
}
.step-number {
    position: absolute;
    top: 16px;
    right: 24px;
    font-size: 3rem;
    font-weight: 800;
    color: var(--primary);
    opacity: 0.1;
    line-height: 1;
}
.step-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    background: rgba(108,92,231,0.1);
    border-radius: 16px;
    margin-bottom: 16px;
    color: var(--primary);
}
@media (prefers-color-scheme: dark) {
    .step-icon { background: rgba(108,92,231,0.15); }
}
.step h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}
.step p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .steps { grid-template-columns: 1fr; gap: 16px; }
}

/* Earnings */
.earnings-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 48px;
}
.earnings-card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px 24px;
    text-align: center;
    box-shadow: var(--card-shadow);
    transition: all var(--transition);
}
.earnings-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--card-shadow-hover);
}
.earnings-card.featured {
    border-color: var(--primary);
    position: relative;
}
.earnings-card.featured::before {
    content: 'Most Common';
    position: absolute;
    top: -12px;
    left: 50%;
    transform: translateX(-50%);
    background: var(--primary);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 12px;
}
.earnings-tier {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}
.earnings-countries {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 16px;
}
.earnings-amount {
    font-size: 2rem;
    font-weight: 800;
    color: var(--text);
    margin-bottom: 4px;
}
.earnings-period {
    color: var(--text-muted);
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .earnings-grid { grid-template-columns: 1fr; }
}

/* Calculator */
.calculator {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 32px;
    max-width: 480px;
    margin: 0 auto;
    box-shadow: var(--card-shadow);
}
.calculator h3 {
    text-align: center;
    margin-bottom: 24px;
    font-size: 1.15rem;
}
.calc-row {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 16px;
}
.calc-row label {
    flex: 0 0 160px;
    font-size: 0.9rem;
    font-weight: 500;
}
.calc-row input[type="range"] { flex: 1; accent-color: var(--primary); }
.calc-row select {
    flex: 1;
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg);
    color: var(--text);
    font-size: 0.9rem;
}
#devices-value {
    font-weight: 700;
    min-width: 24px;
    text-align: center;
}
.calc-result {
    text-align: center;
    padding-top: 16px;
    border-top: 1px solid var(--border);
    font-size: 1.1rem;
}
.calc-result strong {
    color: var(--success);
    font-size: 1.4rem;
}

/* Features */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}
.feature {
    padding: 24px;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    background: var(--card-bg);
    transition: all var(--transition);
}
.feature:hover {
    border-color: var(--primary-light);
    box-shadow: var(--card-shadow-hover);
}
.feature-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(108,92,231,0.1);
    border-radius: 10px;
    color: var(--primary);
    margin-bottom: 12px;
}
@media (prefers-color-scheme: dark) {
    .feature-icon { background: rgba(108,92,231,0.15); }
}
.feature h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 6px;
}
.feature p {
    color: var(--text-muted);
    font-size: 0.9rem;
    line-height: 1.6;
}

@media (max-width: 768px) {
    .features-grid { grid-template-columns: 1fr; }
}

/* Proof */
.proof-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}
.proof-stat { text-align: center; }
.proof-value {
    display: block;
    font-size: 2.2rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}
.proof-label {
    font-size: 0.85rem;
    color: var(--text-muted);
}
.proof-note {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-style: italic;
}

/* CTA */
.cta-section {
    text-align: center;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: #fff;
    padding: 64px 0;
}
.cta-section h2 {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 12px;
}
.cta-section p {
    opacity: 0.9;
    margin-bottom: 24px;
    font-size: 1.05rem;
}
.cta-section .btn-primary {
    background: #fff;
    color: var(--primary);
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}
.cta-section .btn-primary:hover {
    box-shadow: 0 6px 20px rgba(0,0,0,0.3);
}

/* Footer */
.footer {
    background: var(--bg-alt);
    padding: 48px 0 24px;
    border-top: 1px solid var(--border);
}
.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 32px;
    margin-bottom: 32px;
}
.footer-brand p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 8px;
}
.footer-links h4 {
    font-size: 0.85rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    color: var(--text-muted);
}
.footer-links a, .footer-links p {
    display: block;
    color: var(--text);
    text-decoration: none;
    font-size: 0.9rem;
    margin-bottom: 8px;
}
.footer-links a:hover { color: var(--primary); }
.footer-bottom {
    text-align: center;
    padding-top: 24px;
    border-top: 1px solid var(--border);
    color: var(--text-muted);
    font-size: 0.8rem;
}

@media (max-width: 768px) {
    .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
    .footer-grid { grid-template-columns: 1fr; }
}