/**
 * Landing page (front-page) — phong cách FLAT TECH / SEMI-FLAT.
 * Tông nóng (cam/đỏ/trắng). Không glassmorphism, không neon, không glow.
 * Card nền trắng trơn + viền 1px + bo góc, bóng đổ trung tính cực nhẹ (semi-flat).
 * Màu lấy từ Customizer: --primary-color / --accent-color / --bg-color / --text-color.
 */

.lp {
	--lp-primary: var(--primary-color, #e65f2b);
	--lp-accent:  var(--accent-color, #c8372d);
	--lp-text:    var(--text-color, #1a1a1a);
	--lp-bg:      var(--bg-color, #ffffff);
	--lp-surface: #ffffff;
	--lp-soft:    #f8f9fa;
	--lp-border:  #e5e7eb;
	--lp-muted:   #6b7280;
	--lp-radius:  12px;
	/* Bóng trung tính, KHÔNG màu, cực nhẹ — chuẩn Apple/Vercel */
	--lp-shadow:  0 1px 2px rgba(17, 24, 39, 0.04), 0 1px 3px rgba(17, 24, 39, 0.06);
	--lp-shadow-h: 0 6px 16px rgba(17, 24, 39, 0.08);

	font-family: "Plus Jakarta Sans", "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
	color: var(--lp-text);
	background: var(--lp-bg);
	line-height: 1.65;
	overflow-x: clip;
}

.lp * { box-sizing: border-box; }

.lp-container {
	width: 100%;
	max-width: 1180px;
	margin-inline: auto;
	padding-inline: clamp(18px, 5vw, 40px);
}

.lp section { position: relative; }

/* Heading chung */
.lp-sec-head { text-align: center; max-width: 680px; margin: 0 auto clamp(36px, 5vw, 56px); }
.lp-sec-title {
	margin: 0 0 12px;
	font-size: clamp(1.7rem, 4vw, 2.5rem);
	font-weight: 800;
	letter-spacing: -0.02em;
	line-height: 1.15;
	color: var(--lp-text);
}
.lp-sec-title--left { text-align: left; }
.lp-sec-sub { margin: 0; font-size: clamp(1rem, 2vw, 1.15rem); color: var(--lp-muted); }

/* ════════════════════════════════════════════════════════════
   1. HERO
   ════════════════════════════════════════════════════════════ */

.lp-hero {
	padding: clamp(48px, 8vw, 96px) 0 clamp(48px, 7vw, 84px);
	background: var(--lp-bg);
	border-bottom: 1px solid var(--lp-border);
}

/* Nền phẳng: chấm lưới rất nhạt, KHÔNG phát sáng */
.lp-hero__bg { position: absolute; inset: 0; z-index: 0; pointer-events: none; }
.lp-orb { display: none; }                 /* bỏ quầng sáng neon */
.lp-grid {
	position: absolute; inset: 0;
	background-image: radial-gradient(rgba(17, 24, 39, 0.05) 1px, transparent 1px);
	background-size: 22px 22px;
	mask-image: radial-gradient(60% 50% at 50% 30%, #000 0%, transparent 75%);
}

.lp-hero__inner { position: relative; z-index: 1; text-align: center; }

.lp-badge {
	display: inline-block;
	padding: 6px 14px;
	margin-bottom: 22px;
	font-size: 0.85rem;
	font-weight: 600;
	color: var(--lp-primary);
	background: #fdf1ec; /* fallback */
	background: color-mix(in srgb, var(--lp-primary) 10%, #fff);
	border: 1px solid var(--lp-border); /* fallback */
	border: 1px solid color-mix(in srgb, var(--lp-primary) 25%, var(--lp-border));
	border-radius: 999px;
}

.lp-hero__title {
	margin: 0 auto 18px;
	max-width: 18ch;
	font-size: clamp(2.1rem, 6vw, 3.8rem);
	font-weight: 800;
	line-height: 1.1;
	letter-spacing: -0.03em;
	color: var(--lp-text);
}

.lp-hero__sub {
	margin: 0 auto 36px;
	max-width: 58ch;
	font-size: clamp(1.02rem, 2.2vw, 1.25rem);
	color: var(--lp-muted);
}

/* Container công cụ — card phẳng: nền trắng, viền mảnh, bo góc, bóng trung tính nhẹ */
.lp-tool {
	max-width: 720px;
	margin: 0 auto;
	background: var(--lp-surface);
	border: 1px solid var(--lp-border);
	border-radius: 16px;
	box-shadow: var(--lp-shadow);
	overflow: hidden;
}

/* Form plugin bên trong → phẳng, tông nóng */
.lp-tool .svd-widget {
	max-width: none;
	margin: 0;
	border-radius: 0;
	background: var(--lp-surface);
	padding: clamp(20px, 4vw, 32px);
}
.lp-tool .svd-label { color: var(--lp-text); }

/* Input tối giản: nền xám cực nhạt, viền 1px xám; focus → viền primary sắc nét */
.lp-tool .svd-input {
	background: var(--lp-soft);
	border: 1px solid var(--lp-border);
	color: var(--lp-text);
	box-shadow: none;
}
.lp-tool .svd-input::placeholder { color: #9aa1ad; }
.lp-tool .svd-input:focus-visible {
	border-color: var(--lp-primary);
	box-shadow: none;
	outline: none;
}

/* Nút Download: nền trơn primary → hover sang accent, KHÔNG glow */
.lp-tool .svd-btn--primary {
	background: var(--lp-primary);
	color: #fff;
	font-weight: 700;
	box-shadow: none;
	transition: background-color 0.2s ease;
}
.lp-tool .svd-btn--primary:hover { background: var(--lp-accent); box-shadow: none; }

.lp-tool .svd-paste { background: var(--lp-soft); color: var(--lp-primary); }
.lp-tool .svd-paste:hover { background: var(--lp-primary); color: #fff; }

/* Nút tải theo chất lượng → đồng bộ tông nóng, phẳng */
.lp-tool .svd-dl { background: var(--lp-primary); box-shadow: none; transition: background-color 0.2s ease; }
.lp-tool .svd-dl:hover { background: var(--lp-accent); box-shadow: none; }
.lp-tool .svd-dl--audio { background: #374151; }
.lp-tool .svd-dl--audio:hover { background: #1f2937; }

/* Thẻ kết quả / lịch sử: trắng trơn + viền */
.lp-tool .svd-card,
.lp-tool .svd-history__item { background: #fff; border: 1px solid var(--lp-border); box-shadow: none; }
.lp-tool .svd-skel-card { background: #fff; box-shadow: none; }
.lp-tool .svd-cat,
.lp-tool .svd-card__source { color: var(--lp-primary); background: #fdf1ec; background: color-mix(in srgb, var(--lp-primary) 10%, #fff); }

/* ════════════════════════════════════════════════════════════
   2. FEATURES
   ════════════════════════════════════════════════════════════ */

.lp-features { padding: clamp(54px, 8vw, 100px) 0; background: var(--lp-soft); }

.lp-grid-cards {
	display: grid;
	grid-template-columns: repeat(4, 1fr);
	gap: clamp(16px, 2vw, 24px);
}

.lp-card {
	padding: clamp(22px, 3vw, 30px);
	background: var(--lp-surface);
	border: 1px solid var(--lp-border);
	border-radius: var(--lp-radius);
	box-shadow: none;
	transition: border-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}
.lp-card:hover {
	transform: translateY(-4px);
	border-color: color-mix(in srgb, var(--lp-primary) 50%, var(--lp-border));
	box-shadow: var(--lp-shadow-h);
}
.lp-card__icon {
	display: inline-flex;
	align-items: center;
	justify-content: center;
	width: 52px; height: 52px;
	margin-bottom: 18px;
	border-radius: 12px;
	color: #fff;
	background: var(--lp-primary);
}
.lp-card__icon svg { width: 26px; height: 26px; }
.lp-card__title { margin: 0 0 8px; font-size: 1.15rem; font-weight: 700; color: var(--lp-text); }
.lp-card__text { margin: 0; color: var(--lp-muted); font-size: 0.95rem; }

/* ════════════════════════════════════════════════════════════
   3. PLATFORM GUIDES (CSS-only tabs)
   ════════════════════════════════════════════════════════════ */

.lp-guides { padding: clamp(54px, 8vw, 100px) 0; background: var(--lp-bg); }

.lp-tabs { max-width: 880px; margin: 0 auto; }
.lp-tabs__radio { position: absolute; opacity: 0; pointer-events: none; }

.lp-tabs__nav {
	display: flex;
	flex-wrap: wrap;
	justify-content: center;
	gap: 10px;
	margin-bottom: 32px;
}
.lp-tab {
	padding: 10px 22px;
	font-weight: 600;
	font-size: 0.95rem;
	color: var(--lp-muted);
	background: var(--lp-surface);
	border: 1px solid var(--lp-border);
	border-radius: 999px;
	cursor: pointer;
	transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease;
	user-select: none;
}
.lp-tab:hover { border-color: var(--lp-primary); color: var(--lp-text); }

.lp-panel {
	display: none;
	grid-template-columns: repeat(3, 1fr);
	gap: clamp(16px, 2.4vw, 24px);
}

/* Tab active = nền trơn primary, chữ trắng, KHÔNG bóng */
#lp-g-tiktok:checked    ~ .lp-tabs__nav label[for="lp-g-tiktok"],
#lp-g-facebook:checked  ~ .lp-tabs__nav label[for="lp-g-facebook"],
#lp-g-instagram:checked ~ .lp-tabs__nav label[for="lp-g-instagram"],
#lp-g-youtube:checked   ~ .lp-tabs__nav label[for="lp-g-youtube"] {
	color: #fff;
	background: var(--lp-primary);
	border-color: var(--lp-primary);
}
#lp-g-tiktok:checked    ~ .lp-tabs__panels #lp-panel-tiktok,
#lp-g-facebook:checked  ~ .lp-tabs__panels #lp-panel-facebook,
#lp-g-instagram:checked ~ .lp-tabs__panels #lp-panel-instagram,
#lp-g-youtube:checked   ~ .lp-tabs__panels #lp-panel-youtube { display: grid; }

.lp-tabs__radio:focus-visible ~ .lp-tabs__nav .lp-tab { outline: 2px solid var(--lp-primary); outline-offset: 2px; }

.lp-step {
	display: flex;
	gap: 14px;
	padding: 22px;
	background: var(--lp-surface);
	border: 1px solid var(--lp-border);
	border-radius: var(--lp-radius);
	box-shadow: none;
	transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}
.lp-step:hover { transform: translateY(-3px); border-color: color-mix(in srgb, var(--lp-primary) 45%, var(--lp-border)); box-shadow: var(--lp-shadow-h); }
.lp-step__icon {
	flex: 0 0 auto;
	width: 42px; height: 42px;
	display: inline-flex; align-items: center; justify-content: center;
	border-radius: 10px;
	color: #fff;
	background: var(--lp-primary);
}
.lp-step__icon svg { width: 21px; height: 21px; }
.lp-step__num { display: block; font-size: 0.76rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em; color: var(--lp-primary); }
.lp-step__text { margin: 4px 0 0; font-size: 0.94rem; color: var(--lp-text); }

/* ════════════════════════════════════════════════════════════
   4. ABOUT / MISSION
   ════════════════════════════════════════════════════════════ */

.lp-about { padding: clamp(54px, 8vw, 100px) 0; background: var(--lp-soft); }
.lp-about__inner {
	display: grid;
	grid-template-columns: 1fr 1fr;
	gap: clamp(30px, 5vw, 70px);
	align-items: center;
}
.lp-about__content p { color: var(--lp-muted); }
.lp-about__list { margin: 22px 0 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 12px; }
.lp-about__list li { position: relative; padding-left: 30px; color: var(--lp-text); }
.lp-about__list li::before {
	content: "✓";
	position: absolute; left: 0; top: 1px;
	width: 22px; height: 22px;
	display: inline-flex; align-items: center; justify-content: center;
	font-size: 0.72rem; font-weight: 700; color: #fff;
	background: var(--lp-primary); border-radius: 6px;
}

/* Đồ hoạ phẳng: lưới ô vuông trơn, KHÔNG glow/animation */
.lp-about__visual { display: flex; justify-content: center; }
.lp-net {
	position: relative;
	width: 100%; max-width: 420px; aspect-ratio: 1;
	border-radius: 16px;
	background: var(--lp-surface);
	border: 1px solid var(--lp-border);
	box-shadow: var(--lp-shadow);
	overflow: hidden;
}
.lp-net::before {
	content: "";
	position: absolute; inset: 0;
	background-image:
		linear-gradient(var(--lp-border) 1px, transparent 1px),
		linear-gradient(90deg, var(--lp-border) 1px, transparent 1px);
	background-size: 56px 56px;
	opacity: 0.6;
}
.lp-net span {
	position: absolute; width: 30px; height: 30px; border-radius: 8px;
	background: var(--lp-primary);
}
.lp-net span:nth-child(1) { top: 16%; left: 18%; }
.lp-net span:nth-child(2) { top: 28%; left: 64%; background: var(--lp-accent); }
.lp-net span:nth-child(3) { top: 56%; left: 38%; }
.lp-net span:nth-child(4) { top: 70%; left: 70%; background: var(--lp-accent); }
.lp-net span:nth-child(5) { top: 46%; left: 12%; background: #cbd5e1; }
.lp-net span:nth-child(6) { top: 78%; left: 26%; background: #cbd5e1; }

/* ════════════════════════════════════════════════════════════
   5. FAQ (Accordion)
   ════════════════════════════════════════════════════════════ */

.lp-faq { padding: clamp(54px, 8vw, 100px) 0; background: var(--lp-bg); }
.lp-faq__inner { max-width: 820px; margin: 0 auto; }
.lp-faq__list { display: flex; flex-direction: column; gap: 12px; }

.lp-faq__item {
	background: var(--lp-surface);
	border: 1px solid var(--lp-border);
	border-radius: var(--lp-radius);
	overflow: hidden;
	transition: border-color 0.2s ease;
}
.lp-faq__item.active { border-color: var(--lp-primary); }

/* Nút câu hỏi (reset style của <button>) */
.lp-faq__q {
	display: flex; align-items: center; justify-content: space-between; gap: 16px;
	width: 100%;
	padding: 18px 22px;
	margin: 0;
	font: inherit;
	font-weight: 700; font-size: 1.02rem; color: var(--lp-text);
	text-align: left;
	background: none; border: none;
	cursor: pointer;
}
.lp-faq__q:focus-visible { outline: 2px solid var(--lp-primary); outline-offset: -2px; }

.lp-faq__icon { position: relative; flex: 0 0 auto; width: 20px; height: 20px; }
.lp-faq__icon::before, .lp-faq__icon::after {
	content: ""; position: absolute; top: 50%; left: 50%;
	width: 12px; height: 2px; border-radius: 1px;
	background: var(--lp-primary);
	transform: translate(-50%, -50%);
	transition: transform 0.2s ease, opacity 0.2s ease;
}
.lp-faq__icon::after { transform: translate(-50%, -50%) rotate(90deg); }
.lp-faq__item.active .lp-faq__icon::after { opacity: 0; transform: translate(-50%, -50%) rotate(0); }

/* Panel xổ mượt bằng max-height (JS gán giá trị scrollHeight) */
.lp-faq__a {
	max-height: 0;
	overflow: hidden;
	transition: max-height 0.3s ease;
}
.lp-faq__a-inner { padding: 0 22px 20px; color: var(--lp-muted); }

/* ════════════════════════════════════════════════════════════
   6. FOOTER
   ════════════════════════════════════════════════════════════ */

.lp-footer {
	padding: clamp(46px, 7vw, 76px) 0 clamp(28px, 4vw, 44px);
	background: var(--lp-surface);
	border-top: 1px solid var(--lp-border);
}
.lp-footer__cols {
	display: grid;
	grid-template-columns: 1.6fr 1fr 1fr;
	gap: clamp(28px, 4vw, 56px);
}
.lp-footer__logo {
	display: inline-block;
	margin-bottom: 14px;
	font-size: 1.4rem; font-weight: 800;
	color: var(--lp-primary);
}
.lp-footer__disclaimer { margin: 0; max-width: 42ch; font-size: 0.9rem; color: var(--lp-muted); }
.lp-footer__heading { margin: 0 0 16px; font-size: 0.95rem; font-weight: 700; color: var(--lp-text); }
.lp-footer__col ul { margin: 0; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 11px; }
.lp-footer__col a { color: var(--lp-muted); font-size: 0.94rem; transition: color 0.2s ease; }
.lp-footer__col a:hover { color: var(--lp-primary); }

/* ════════════════════════════════════════════════════════════
   RESPONSIVE
   ════════════════════════════════════════════════════════════ */

@media (max-width: 980px) {
	.lp-grid-cards { grid-template-columns: repeat(2, 1fr); }
	.lp-about__inner { grid-template-columns: 1fr; }
	.lp-about__visual { order: -1; }
	.lp-footer__cols { grid-template-columns: 1fr 1fr; }
	.lp-footer__brand { grid-column: 1 / -1; }
}
@media (max-width: 680px) {
	.lp-panel,
	#lp-g-tiktok:checked    ~ .lp-tabs__panels #lp-panel-tiktok,
	#lp-g-facebook:checked  ~ .lp-tabs__panels #lp-panel-facebook,
	#lp-g-instagram:checked ~ .lp-tabs__panels #lp-panel-instagram,
	#lp-g-youtube:checked   ~ .lp-tabs__panels #lp-panel-youtube { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
	.lp-grid-cards { grid-template-columns: 1fr; }
	.lp-footer__cols { grid-template-columns: 1fr; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
	.lp * { transition-duration: 0.01ms !important; }
}