:root {
    --primary: #6366f1; --primary-hover: #4f46e5;
    --text: #1e293b; --text-secondary: #475569; --text-muted: #94a3b8;
    --bg: #ffffff; --bg-light: #f8fafc; --border: #e2e8f0;
    --radius: 14px; --radius-full: 50px;
    --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
}
* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: 'Inter', sans-serif; background: var(--bg); color: var(--text); line-height: 1.6; }
.container { max-width: 1100px; margin: 0 auto; padding: 0 24px; }

/* Navbar */
.navbar { background: #fff !important; border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; min-height: 56px; }
.navbar-brand { font-size: 1.15rem; font-weight: 800; color: var(--primary) !important; text-decoration: none; }
.nav-link { color: var(--text-secondary) !important; font-size: 0.88rem; font-weight: 500; }
.nav-link:hover { color: var(--primary) !important; }
.navbar-toggler { border: 2px solid #6366f1 !important; background: #fff !important; border-radius: 8px !important; padding: 6px 10px !important; }
.navbar-toggler-icon { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%236366f1' stroke-width='3' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E") !important; }

/* Hero */
.hero { padding: 55px 0 45px; text-align: center; }
.hero-title { font-size: 2.2rem; font-weight: 800; }
.hero-desc { color: var(--text-secondary); font-size: 1rem; margin-bottom: 24px; }
.hero-form { max-width: 600px; margin: 0 auto 18px; }
.hero-row { display: flex; gap: 8px; }
.hero-input { flex: 2; padding: 12px 18px; border: 1px solid var(--border); border-radius: var(--radius-full); font-size: 0.95rem; outline: none; }
.hero-input:focus { border-color: var(--primary); }
.hero-select { flex: 1; padding: 12px 14px; border: 1px solid var(--border); border-radius: var(--radius-full); font-size: 0.9rem; cursor: pointer; min-width: 130px; }
.hero-btn { padding: 12px 28px; background: var(--primary); color: #fff; border: none; border-radius: var(--radius-full); font-weight: 600; cursor: pointer; white-space: nowrap; }
.hero-btn:hover { background: var(--primary-hover); }
.hero-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; }
.hero-tag { padding: 7px 18px; border: 1px solid var(--border); border-radius: var(--radius-full); color: var(--text-secondary); text-decoration: none; font-size: 0.85rem; }
.hero-tag:hover { border-color: var(--primary); color: var(--primary); background: #eef2ff; }

/* Sections */
.section { padding: 50px 0; }
.section.bg-gray { background: var(--bg-light); }
.section-title { font-size: 1.35rem; font-weight: 700; margin-bottom: 24px; text-align: center; }

/* Tools */
.tools-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.tool-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 18px 20px; display: flex; align-items: center; gap: 14px; text-decoration: none; color: inherit; transition: 0.2s; box-shadow: var(--shadow-sm); }
.tool-card:hover { border-color: var(--primary); transform: translateY(-2px); }
.tool-icon { font-size: 1.5rem; flex-shrink: 0; }
.tool-info { flex: 1; min-width: 0; }
.tool-name { font-size: 0.92rem; font-weight: 700; }
.tool-text { font-size: 0.78rem; color: var(--text-muted); }
.tool-arrow { font-size: 1.1rem; color: var(--text-muted); }
.tool-card:hover .tool-arrow { color: var(--primary); }

/* Trending */
.trending-wrap { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.trending-chip { padding: 10px 22px; background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius-full); color: var(--primary); font-weight: 600; text-decoration: none; font-size: 0.88rem; }
.trending-chip:hover { background: #eef2ff; border-color: var(--primary); }

/* Why */
.why-card { background: var(--bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 20px 16px; height: 100%; }
.why-card:hover { border-color: var(--primary); }

/* FAQ */
.faq-wrap { max-width: 680px; margin: 0 auto; }
.faq-card { border: 1px solid var(--border); border-radius: var(--radius); margin-bottom: 8px; overflow: hidden; }
.faq-btn { width: 100%; text-align: left; padding: 15px 18px; background: none; border: none; font-weight: 600; font-size: 0.9rem; display: flex; justify-content: space-between; cursor: pointer; }
.faq-btn:hover { background: var(--bg-light); }
.faq-icon { transition: 0.2s; color: var(--text-muted); }
.faq-btn:not(.collapsed) .faq-icon { transform: rotate(180deg); color: var(--primary); }
.faq-btn:not(.collapsed) { color: var(--primary); background: #eef2ff; }
.faq-answer { padding: 0 18px 14px; color: var(--text-secondary); font-size: 0.88rem; }

/* Footer */
footer.footer { background: #0f172a; color: #94a3b8; padding: 48px 0 24px; font-size: 0.88rem; }
footer.footer h6 { color: #64748b; text-transform: uppercase; letter-spacing: 1px; margin-bottom: 14px; }
footer.footer a { color: #64748b; text-decoration: none; display: block; margin-bottom: 6px; }
footer.footer a:hover { color: #e2e8f0; }
.footer-social { display: flex; gap: 8px; }
.footer-social a { width: 36px; height: 36px; background: rgba(255,255,255,0.05); border-radius: 8px; display: inline-flex; align-items: center; justify-content: center; }
.footer-social a:hover { background: var(--primary); color: #fff; }

/* Dark Mode */
body.dark-mode { --bg: #0f172a; --bg-light: #1a1a2e; --text: #e2e8f0; --text-secondary: #94a3b8; --text-muted: #64748b; --border: #1e293b; background: #0f172a; color: #e2e8f0; }
body.dark-mode .navbar { background: #0f172a !important; }
body.dark-mode .navbar-toggler { background: #1e293b !important; border-color: #818cf8 !important; }
body.dark-mode .navbar-toggler-icon { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3E%3Cpath stroke='%23818cf8' stroke-width='3' d='M4 7h22M4 15h22M4 23h22'/%3E%3C/svg%3E") !important; }
body.dark-mode .tool-card, body.dark-mode .faq-card, body.dark-mode .why-card, body.dark-mode .trending-chip { background: #1e293b; border-color: #1e293b; }
body.dark-mode .hero-input, body.dark-mode .hero-select { background: #1e293b; border-color: #1e293b; color: #e2e8f0; }

@media (max-width: 900px) { .tools-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 768px) { .hero { padding: 36px 0 30px; } .hero-title { font-size: 1.7rem; } .hero-row { flex-direction: column; } .hero-input, .hero-select, .hero-btn { width: 100%; } .section { padding: 36px 0; } }
@media (max-width: 540px) { .tools-grid { grid-template-columns: 1fr; } }