/* =========================================================
   KeoTeach · Portada para visitantes
========================================================= */

.landing {
    display: none;
}

html.landing-on body {
    overflow: hidden;
}

html.landing-on .landing {
    position: fixed;
    inset: 0;
    z-index: 600;
    display: block;
    overflow-y: auto;
    overflow-x: hidden;
    scroll-behavior: smooth;
    background:
        radial-gradient(1000px 600px at 85% -10%, color-mix(in srgb, var(--primary) 26%, transparent), transparent 60%),
        radial-gradient(800px 500px at -10% 30%, color-mix(in srgb, var(--cyan) 14%, transparent), transparent 60%),
        radial-gradient(700px 500px at 100% 80%, color-mix(in srgb, var(--pink) 12%, transparent), transparent 60%),
        var(--bg);
    color: var(--text);
    animation: ld-in .35s ease both;
}

.landing.leaving {
    opacity: 0;
    transform: scale(1.01);
    transition: opacity .25s ease, transform .25s ease;
}

@keyframes ld-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* ---------- Barra superior ---------- */

.ld-nav {
    position: sticky;
    top: 0;
    z-index: 2;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    max-width: 1180px;
    margin: 0 auto;
    padding: 14px 20px;
    backdrop-filter: blur(14px);
    background: color-mix(in srgb, var(--bg) 72%, transparent);
    border-bottom: 1px solid color-mix(in srgb, var(--border) 60%, transparent);
}

.ld-brand {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text);
    font-family: var(--font-display);
    font-size: 20px;
    font-weight: 700;
    text-decoration: none;
}

.ld-brand img {
    border-radius: 10px;
}

.ld-links {
    display: flex;
    gap: 22px;
}

.ld-links a {
    color: var(--text-soft);
    font-weight: 600;
    text-decoration: none;
}

.ld-links a:hover {
    color: var(--text);
}

.ld-nav-actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.ld-lang {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 10px;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: transparent;
    color: var(--text-soft);
    font: inherit;
    font-weight: 700;
    cursor: pointer;
}

/* ---------- Hero ---------- */

.ld-main {
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

.ld-hero {
    display: grid;
    grid-template-columns: minmax(0, 1.1fr) minmax(0, .9fr);
    align-items: center;
    gap: 40px;
    min-height: calc(100vh - 140px);
    padding: 40px 0 60px;
}

.ld-pill {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border: 1px solid color-mix(in srgb, var(--primary) 40%, var(--border));
    border-radius: 999px;
    background: color-mix(in srgb, var(--primary) 12%, transparent);
    color: var(--primary-2);
    font-size: 13.5px;
    font-weight: 700;
}

.ld-hero h1 {
    margin: 18px 0 16px;
    font-family: var(--font-display);
    font-size: clamp(38px, 6vw, 68px);
    line-height: 1.02;
    letter-spacing: -.02em;
}

.ld-hero h1 span {
    background: linear-gradient(120deg, var(--yellow), var(--orange) 40%, var(--pink) 75%, var(--primary-2));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.ld-hero-copy > p {
    max-width: 580px;
    margin: 0;
    color: var(--text-soft);
    font-size: clamp(16px, 1.6vw, 19px);
    line-height: 1.6;
}

.ld-cta {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 28px;
}

.ld-big {
    padding: 14px 24px !important;
    font-size: 16px !important;
    border-radius: 14px !important;
}

.ld-cta .btn-primary,
.ld-final .btn-primary {
    background: linear-gradient(135deg, var(--primary), #9b5cff 55%, var(--pink)) !important;
    box-shadow: 0 14px 34px color-mix(in srgb, var(--primary) 40%, transparent);
}

.ld-trust {
    display: flex;
    flex-wrap: wrap;
    gap: 8px 20px;
    margin: 22px 0 0;
    padding: 0;
    list-style: none;
    color: var(--text-muted);
    font-size: 14px;
}

.ld-trust i {
    margin-right: 6px;
    color: var(--green);
}

/* ---------- Demo animada ---------- */

.ld-demo {
    position: relative;
    display: grid;
    place-items: center;
    min-height: 460px;
}

.ld-phone {
    position: relative;
    width: 260px;
    height: 440px;
    padding: 22px 18px;
    border: 1px solid var(--border-strong);
    border-radius: 36px;
    background: linear-gradient(160deg, var(--surface-2), var(--surface));
    box-shadow: var(--shadow-lg), inset 0 0 0 6px color-mix(in srgb, var(--bg) 70%, transparent);
    overflow: hidden;
    animation: ld-tilt 7s ease-in-out infinite;
}

@keyframes ld-tilt {
    0%, 100% { transform: rotate(-3deg) translateY(0); }
    50% { transform: rotate(2deg) translateY(-10px); }
}

.ld-notes {
    position: relative;
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 18px 16px;
    border-radius: 14px;
    background: #fdf8e8;
    box-shadow: 0 6px 18px rgba(0, 0, 0, .25);
    transform: rotate(-2deg);
    animation: ld-notes 6s ease-in-out infinite;
}

.ld-notes b {
    height: 7px;
    border-radius: 4px;
    background: #6b7aa6;
    opacity: .55;
}

.ld-notes b.short {
    width: 60%;
}

.ld-flash {
    position: absolute;
    inset: 0;
    border-radius: 14px;
    background: #fff;
    opacity: 0;
    animation: ld-flash 6s ease infinite;
}

@keyframes ld-notes {
    0%, 20% { transform: rotate(-2deg) scale(1); opacity: 1; }
    32%, 100% { transform: rotate(0) scale(.62) translateY(-34px); opacity: .9; }
}

@keyframes ld-flash {
    0%, 14% { opacity: 0; }
    17% { opacity: .95; }
    24%, 100% { opacity: 0; }
}

.ld-magic {
    display: grid;
    place-items: center;
    width: 52px;
    height: 52px;
    margin: -10px auto 12px;
    border-radius: 50%;
    background: conic-gradient(from 0deg, var(--primary), var(--cyan), var(--green), var(--yellow), var(--pink), var(--primary));
    color: #fff;
    font-size: 20px;
    opacity: 0;
    animation: ld-magic 6s ease infinite;
}

@keyframes ld-magic {
    0%, 28% { opacity: 0; transform: scale(.4) rotate(0); }
    36%, 52% { opacity: 1; transform: scale(1) rotate(180deg); }
    62%, 100% { opacity: 0; transform: scale(.6) rotate(360deg); }
}

.ld-outputs {
    display: grid;
    gap: 8px;
}

.ld-out {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--bg-2);
    font-weight: 700;
    font-size: 14px;
    opacity: 0;
    transform: translateY(10px);
    animation: ld-out 6s ease infinite;
}

.ld-out i {
    display: grid;
    place-items: center;
    width: 30px;
    height: 30px;
    border-radius: 9px;
}

.ld-out.o1 { animation-delay: 0s; }
.ld-out.o1 i { background: color-mix(in srgb, var(--blue) 20%, transparent); color: var(--blue); }
.ld-out.o2 { animation-name: ld-out2; }
.ld-out.o2 i { background: color-mix(in srgb, var(--green) 20%, transparent); color: var(--green); }
.ld-out.o3 { animation-name: ld-out3; }
.ld-out.o3 i { background: color-mix(in srgb, var(--orange) 20%, transparent); color: var(--orange); }
.ld-out.o4 { animation-name: ld-out4; }
.ld-out.o4 i { background: color-mix(in srgb, var(--cyan) 20%, transparent); color: var(--cyan); }

@keyframes ld-out { 0%, 50% { opacity: 0; transform: translateY(10px); } 56%, 94% { opacity: 1; transform: none; } 100% { opacity: 0; } }
@keyframes ld-out2 { 0%, 56% { opacity: 0; transform: translateY(10px); } 62%, 94% { opacity: 1; transform: none; } 100% { opacity: 0; } }
@keyframes ld-out3 { 0%, 62% { opacity: 0; transform: translateY(10px); } 68%, 94% { opacity: 1; transform: none; } 100% { opacity: 0; } }
@keyframes ld-out4 { 0%, 68% { opacity: 0; transform: translateY(10px); } 74%, 94% { opacity: 1; transform: none; } 100% { opacity: 0; } }

.ld-float {
    position: absolute;
    padding: 9px 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: color-mix(in srgb, var(--surface) 88%, transparent);
    backdrop-filter: blur(8px);
    box-shadow: var(--shadow);
    font-weight: 700;
    font-size: 14px;
    white-space: nowrap;
    animation: ld-bob 5s ease-in-out infinite;
}

.ld-float.f1 { top: 40px; left: 0; }
.ld-float.f2 { top: 46%; right: -6px; animation-delay: 1.2s; }
.ld-float.f3 { bottom: 34px; left: 18px; animation-delay: 2.2s; }

@keyframes ld-bob {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-9px); }
}

/* ---------- Secciones ---------- */

.ld-section {
    padding: 70px 0 20px;
    text-align: center;
}

.ld-kicker {
    color: var(--primary-2);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .12em;
}

.ld-section h2,
.ld-final h2 {
    margin: 10px auto 30px;
    max-width: 720px;
    font-family: var(--font-display);
    font-size: clamp(28px, 4vw, 42px);
    line-height: 1.12;
}

.ld-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 16px;
    text-align: left;
}

.ld-card,
.ld-steps li,
.ld-price,
.ld-faq details {
    opacity: 0;
    transform: translateY(18px);
    transition: opacity .5s ease, transform .5s ease, border-color .25s ease, box-shadow .25s ease;
}

.ld-card.in,
.ld-steps li.in,
.ld-price.in,
.ld-faq details.in {
    opacity: 1;
    transform: none;
}

.ld-card {
    padding: 22px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: linear-gradient(160deg, var(--surface), var(--surface-2));
}

.ld-card:hover {
    border-color: color-mix(in srgb, var(--a) 60%, var(--border));
    box-shadow: 0 16px 40px color-mix(in srgb, var(--a) 18%, transparent);
    transform: translateY(-4px);
}

.ld-card > i {
    display: grid;
    place-items: center;
    width: 48px;
    height: 48px;
    border-radius: 14px;
    background: color-mix(in srgb, var(--a) 18%, transparent);
    color: var(--a);
    font-size: 21px;
}

.ld-card h3 {
    margin: 14px 0 6px;
    font-size: 17px;
}

.ld-card p {
    margin: 0;
    color: var(--text-soft);
    font-size: 14.5px;
    line-height: 1.55;
}

.ld-steps ol {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 18px;
    margin: 0;
    padding: 0;
    list-style: none;
    counter-reset: none;
}

.ld-steps li {
    position: relative;
    padding: 26px 22px;
    border: 1px solid var(--border);
    border-radius: 20px;
    background: var(--surface);
}

.ld-steps li b {
    display: grid;
    place-items: center;
    width: 44px;
    height: 44px;
    margin: 0 auto 10px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--pink));
    color: #fff;
    font-family: var(--font-display);
    font-size: 20px;
}

.ld-steps h3 {
    margin: 0 0 6px;
}

.ld-steps p {
    margin: 0;
    color: var(--text-soft);
}

.ld-prices {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 360px));
    justify-content: center;
    gap: 20px;
    text-align: left;
}

.ld-price {
    position: relative;
    display: flex;
    flex-direction: column;
    padding: 28px 24px;
    border: 1px solid var(--border);
    border-radius: 24px;
    background: var(--surface);
}

.ld-price.pro {
    border-color: color-mix(in srgb, var(--yellow) 55%, var(--border));
    background:
        radial-gradient(circle at 100% 0%, color-mix(in srgb, var(--yellow) 14%, transparent), transparent 50%),
        var(--surface);
    box-shadow: 0 20px 50px color-mix(in srgb, var(--yellow) 12%, transparent);
}

.ld-best {
    position: absolute;
    top: -13px;
    left: 24px;
    padding: 4px 12px;
    border-radius: 999px;
    background: linear-gradient(135deg, var(--yellow), var(--orange));
    color: #1b1300;
    font-size: 12.5px;
    font-weight: 800;
}

.ld-price h3 {
    margin: 0;
}

.ld-amount {
    margin: 10px 0 0;
}

.ld-amount strong {
    font-family: var(--font-display);
    font-size: 42px;
}

.ld-amount span {
    color: var(--text-muted);
}

.ld-alt {
    margin: 2px 0 0;
    color: var(--text-muted);
    font-size: 14px;
}

.ld-price ul {
    flex: 1;
    margin: 16px 0 20px;
    padding: 0;
    list-style: none;
}

.ld-price li {
    position: relative;
    margin: 9px 0;
    padding-left: 26px;
    color: var(--text-soft);
}

.ld-price li::before {
    content: "\f00c";
    position: absolute;
    left: 0;
    color: var(--green);
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
}

.ld-faq {
    max-width: 760px;
    margin: 0 auto;
    text-align: left;
}

.ld-faq details {
    margin-bottom: 10px;
    padding: 16px 20px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: var(--surface);
}

.ld-faq summary {
    cursor: pointer;
    font-weight: 700;
    list-style: none;
}

.ld-faq summary::-webkit-details-marker {
    display: none;
}

.ld-faq summary::after {
    content: "+";
    float: right;
    color: var(--primary-2);
    font-size: 20px;
    line-height: 1;
    transition: transform .2s ease;
}

.ld-faq details[open] summary::after {
    transform: rotate(45deg);
}

.ld-faq p {
    margin: 10px 0 0;
    color: var(--text-soft);
}

.ld-final {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    margin: 70px 0 30px;
    padding: 50px 20px;
    border: 1px solid color-mix(in srgb, var(--primary) 35%, var(--border));
    border-radius: 30px;
    background:
        radial-gradient(circle at 50% 0%, color-mix(in srgb, var(--primary) 22%, transparent), transparent 60%),
        var(--surface);
    text-align: center;
}

.ld-final h2 {
    margin-bottom: 4px;
}

.ld-final p {
    margin: 0 0 18px;
    color: var(--text-soft);
}

.ld-skip {
    margin-top: 12px;
    border: 0;
    background: none;
    color: var(--text-muted);
    font: inherit;
    cursor: pointer;
}

.ld-skip:hover {
    color: var(--text);
    text-decoration: underline;
}

.ld-footer {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 10px;
    max-width: 1180px;
    margin: 0 auto;
    padding: 24px 20px 40px;
    color: var(--text-muted);
    font-size: 14px;
}

.ld-footer nav {
    display: flex;
    gap: 16px;
}

.ld-footer a {
    color: var(--text-muted);
}

/* ---------- Responsive ---------- */

@media (max-width: 1000px) {
    .ld-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .ld-links { display: none; }
}

@media (max-width: 820px) {
    .ld-hero { grid-template-columns: 1fr; min-height: 0; padding-top: 24px; text-align: center; }
    .ld-hero-copy > p { margin: 0 auto; }
    .ld-cta, .ld-trust { justify-content: center; }
    .ld-demo { min-height: 400px; }
    .ld-phone { width: 230px; height: 390px; }
    .ld-steps ol { grid-template-columns: 1fr; }
    .ld-prices { grid-template-columns: minmax(0, 420px); }
}

@media (max-width: 560px) {
    .ld-nav { padding: 10px 16px; gap: 8px; }
    .ld-nav .btn-ghost { display: none; }
    .ld-nav .btn-primary { padding: 9px 12px; font-size: 14px; white-space: nowrap; }
    .ld-brand { font-size: 18px; }
    .ld-lang { padding: 7px 8px; }
    .ld-main { padding: 0 16px; }
    .ld-grid { grid-template-columns: 1fr; }
    .ld-cta .btn { width: 100%; justify-content: center; }
    .ld-float { font-size: 12.5px; padding: 7px 10px; }
    .ld-float.f2 { right: 0; }
    .ld-section { padding-top: 54px; }
}

@media (prefers-reduced-motion: reduce) {
    .ld-phone, .ld-notes, .ld-flash, .ld-magic, .ld-out, .ld-float { animation: none !important; }
    .ld-out { opacity: 1; transform: none; }
    .ld-card, .ld-steps li, .ld-price, .ld-faq details { opacity: 1; transform: none; transition: none; }
}