:root {
    --bg-primary: #e9ede9;
    --bg-secondary: #f8fafc;
    --bg-tertiary: #7a998b;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --text-tertiary: #7a998b;
    --highlight: #1e6b59;
    --border: #e2e8f0;
    --surface: #ffffff;
    --font: 'IBM Plex Sans','Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
    --section-py: clamp(4rem, 8vw, 7rem);
    --max-w: 1100px;
    --px: clamp(1.25rem, 4vw, 2rem);
}

[data-theme="dark"] {
    --bg-primary: #0a0a0a;
    --bg-secondary: #101010;
    --bg-tertiary: #43534d;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-tertiary: #64748b;
    --highlight: #289279;
    --border: #1e293b;
    --surface: #151515;
}

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

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    transition: background-color 0.3s ease, color 0.3s ease;
}

section { scroll-margin-top: 4.5rem; }

.dot {
    color: var(--highlight)
}

.container {
    max-width: var(--max-w);
    margin: 0 auto;
    padding: 0 var(--px);
}

/* ─── Header ─── */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    padding: 1rem 0;
    transition: background-color 0.3s, border-color 0.3s;
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background-color: color-mix(in srgb, var(--bg-primary) 85%, transparent);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom-color: var(--border);
    transition: background-color 0.3s, backdrop-filter 0.3s, border-color 0.3s;
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
    text-decoration: none;
    letter-spacing: -0.02em;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
    list-style: none;
}

.nav-links a {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

a {
    color: var(--highlight)
}

.theme-toggle {
    background: none;
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 0.4rem;
    cursor: pointer;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, border-color 0.2s;
}

.theme-toggle:hover { color: var(--text-primary); border-color: var(--text-tertiary); }

[data-theme="light"] .icon-sun { display: none; }
[data-theme="dark"] .icon-moon { display: none; }

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-primary);
    padding: 0.25rem;
}

.menu-close { display: none; }

/* ─── Hero ─── */
.hero {
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 6rem var(--px) 4rem;
    position: relative;
}

.hero-eyebrow {
    font-size: 2rem;
    font-weight: 900;
    color: var(--text-primary);
    letter-spacing: -0.01em;
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.2s;
}

.hero-title {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.03em;
    margin-bottom: 1.25rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.4s;
}

.hero-subtitle {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    color: var(--text-secondary);
    font-weight: 400;
    margin-bottom: 2rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.6s;
}

.hero-support {
    font-size: 0.9375rem;
    color: var(--text-tertiary);
    letter-spacing: 0.02em;
    margin-bottom: 2.5rem;
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 0.8s;
}

.hero-support span { margin: 0 0.25rem; }

.hero-cta {
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 1s;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.75rem;
    font-size: 0.9375rem;
    font-weight: 600;
    font-family: var(--font);
    text-decoration: none;
    border-radius: 8px;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background: var(--highlight);
    color: var(--bg-secondary);
}

.btn-primary:hover {
    opacity: 0.85;
    transform: translateY(-1px);
}

.btn-secondary {
    background: var(--highlight);
    color: var(--bg-secondary);
    border: 1px solid var(--border);
    margin-top: 1rem;
    font-size: 0.8rem;
}

.btn-secondary:hover {
    border-color: var(--text-tertiary);
}

.scroll-hint {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    color: var(--text-tertiary);
    opacity: 0;
    animation: fadeInUp 0.6s ease forwards 1.2s;
}

.scroll-hint svg {
    animation: float 2.5s ease-in-out infinite;
}

/* ─── Section commons ─── */
.section { padding: var(--section-py) 0; }
.section-alt { background: var(--bg-secondary); }

.section-label {
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--text-tertiary);
    letter-spacing: 0.06em;
    text-transform: uppercase;
    margin-bottom: 0.75rem;
}


.curso-card figure {
    display: flex;
    flex-direction: column;
    margin-top: -1rem;
}

.curso-card figcaption {
    font-size: 0.8rem;
    color: var(--text-primary);
    text-align: center;
    margin: 0;
    padding-top: 0.2rem;
    line-height: 1rem;
}

.curso-divider {
    display: flex;
}

.profesor {
    float: left;
    width: 140px;
}

.section-label::before { content: "/ "; color: var(--highlight) }

.section-title {
    font-size: clamp(1.75rem, 3.5vw, 2.5rem);
    font-weight: 700;
    line-height: 1.15;
    letter-spacing: -0.025em;
    margin-bottom: 1rem;
}

.section-subtitle {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
}

/* ─── Postura ─── */
.postura-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    margin-top: 2.5rem;
}

.postura-text p {
    font-size: 1.0625rem;
    color: var(--text-secondary);
    line-height: 1.75;
    margin-bottom: 1rem;
}

.postura-list h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

 .postura-list h4 {
    font-size: 0.9rem;
    font-weight: 400;
    margin-top: 2rem;
}

.postura-list ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.625rem;
}

.postura-list li {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    padding-left: 1.25rem;
    position: relative;
}

.postura-list li::before {
    content: "/";
    position: absolute;
    left: 0;
    color: var(--text-tertiary);
    font-weight: 600;
}

.postura-statement {
    margin-top: 2.5rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border);
    font-size: 1.125rem;
    font-weight: 600;
    line-height: 1.6;
}

/* ─── Cursos ─── */
.cursos-header { margin-bottom: 2.5rem; }

.cursos-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
}

.curso-card {
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    background: var(--surface);
    transition: border-color 0.2s, transform 0.2s;
    display: flex;
    flex-direction: column;
}

.curso-card:hover {
    border-color: var(--text-tertiary);
    transform: translateY(-2px);
}

.curso-card h3 {
    font-size: 1.375rem;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 0.5rem;
}

.curso-card .curso-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: 1.5rem;
}

.curso-details {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 1.5rem;
    flex: 1;
}

.curso-details li {
    font-size: 0.875rem;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.curso-details li svg {
    flex-shrink: 0;
    color: var(--text-tertiary);
}

.curso-badge-list {
    margin: 0;
    display: flex;
    flex-wrap: wrap;
    list-style: none;
    margin-bottom: 1.5rem;

}
.curso-badge-list li {
    margin: 0;
    margin-right: 0.5rem;
    margin-bottom: 0.4rem;
}

.curso-badge {
    display: inline-block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-tertiary);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 0.25rem 0.625rem;
    width: fit-content;
}

/* ─── Modalidad ─── */
.modalidad-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
    margin-top: 2.5rem;
}

.modalidad-item h3 {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-bottom: 0.375rem;
}

.modalidad-item p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* ─── Inscripción ─── */
.inscripcion-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: start;
    margin-top: 2.5rem;
}

.inscripcion-points {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.inscripcion-points li {
    font-size: 1rem;
    color: var(--text-secondary);
    padding-left: 1.5rem;
    position: relative;
    line-height: 1.6;
}

.inscripcion-points li::before {
    content: "";
    position: absolute;
    left: 0;
    top: 0.625rem;
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: var(--text-tertiary);
}

.inscripcion-cta {
    padding: 2rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    background: var(--surface);
}

.inscripcion-cta h3 {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.inscripcion-cta p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.email-form {
    display: flex;
    gap: 0.5rem;
}

.email-form input {
    flex: 1;
    padding: 0.625rem 1rem;
    font-size: 0.875rem;
    font-family: var(--font);
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
}

.email-form input::placeholder { color: var(--text-tertiary); }
.email-form input:focus { border-color: var(--text-secondary); }

.email-form button {
    padding: 0.625rem 1.25rem;
    font-size: 0.875rem;
}

/* ─── Próximamente ─── */
.prox-items {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
    margin-bottom: 2rem;
}

.prox-item {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    padding-left: 1rem;
    border-left: 2px solid var(--border);
}

.prox-item strong {
    display: block;
    color: var(--text-primary);
    font-weight: 600;
    margin-bottom: 0.125rem;
}

/* ─── Footer ─── */
.footer {
    padding: 3rem 0;
    border-top: 1px solid var(--border);
    background-color: var(--bg-secondary);
}

.footer .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.footer-left .logo {
    display: block;
    margin-bottom: 0.375rem;
}

.footer-left p {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.footer-right {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

/* ─── Dynamic pages: simplified header ─── */
.header-simple {
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
    background: var(--bg-primary);
}

.header-simple-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* ─── Account link & avatar in header ─── */
.account-link {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: color 0.2s;
    text-decoration: none;
}
.account-link:hover {
    color: var(--highlight);
}
.header-avatar {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    object-fit: cover;
}
.header-initials {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    background: var(--highlight);
    color: #fff;
    font-size: 0.75rem;
    font-weight: 600;
    line-height: 1;
}
.header-simple-right {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

/* ─── Dynamic pages: simplified footer ─── */
.footer-simple {
    padding: 2rem 0;
    border-top: 1px solid var(--border);
    text-align: center;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

/* ─── Auth section ─── */
.auth-section {
    min-height: calc(100vh - 8rem);
    display: flex;
    align-items: center;
    justify-content: center;
}

.auth-container {
    max-width: 400px;
    margin: 0 auto;
    width: 100%;
}

.auth-title {
    font-size: 1.75rem;
    font-weight: 700;
    letter-spacing: -0.02em;
    margin-bottom: 1.5rem;
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-group input {
    padding: 0.625rem 0.875rem;
    font-size: 0.9375rem;
    font-family: var(--font);
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-primary);
    outline: none;
    transition: border-color 0.2s;
}

.form-group input::placeholder { color: var(--text-tertiary); }
.form-group input:focus { border-color: var(--highlight); }

.btn-full {
    width: 100%;
    justify-content: center;
}

.btn-social {
    background: var(--surface);
    color: var(--text-primary);
    border: 1px solid var(--border);
    margin-top: 0;
    font-size: 0.9375rem;
}

.btn-social:hover {
    border-color: var(--text-tertiary);
    background: var(--bg-secondary);
}

.auth-divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.25rem 0;
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.auth-divider::before,
.auth-divider::after {
    content: "";
    flex: 1;
    height: 1px;
    background: var(--border);
}

.auth-social {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.auth-error {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: #dc2626;
    background: #fef2f2;
    border: 1px solid #fecaca;
    border-radius: 8px;
    margin-bottom: 1rem;
}

[data-theme="dark"] .auth-error {
    color: #fca5a5;
    background: #1c1111;
    border-color: #7f1d1d;
}

.auth-success {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    color: #16a34a;
    background: #f0fdf4;
    border: 1px solid #bbf7d0;
    border-radius: 8px;
    margin-bottom: 1rem;
}

[data-theme="dark"] .auth-success {
    color: #86efac;
    background: #0a1f0d;
    border-color: #14532d;
}

.auth-link {
    margin-top: 1.5rem;
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-align: center;
}

.auth-link a {
    color: var(--highlight);
    text-decoration: none;
    font-weight: 500;
}

.auth-link a:hover { text-decoration: underline; }

.auth-skip {
    font-size: 0.875rem;
    color: var(--text-tertiary);
    text-decoration: none;
}

.auth-skip:hover { text-decoration: underline; }

/* ─── Login methods ─── */
.login-methods-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.login-method {
    position: relative;
}

.login-method.preferred::after {
    content: "Último usado";
    position: absolute;
    top: 50%;
    right: -0.5rem;
    transform: translateY(-50%) translateX(100%);
    font-size: 0.6875rem;
    color: var(--highlight);
    white-space: nowrap;
}

/* ─── Checkout ─── */
.checkout-container {
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

.checkout-loading {
    text-align: center;
    color: var(--text-tertiary);
    padding: 2rem 0;
}

.checkout-course {
    margin-bottom: 2rem;
}

.checkout-desc {
    font-size: 0.9375rem;
    color: var(--text-secondary);
    line-height: 1.6;
    margin-top: 0.5rem;
}

.checkout-price {
    margin-top: 1rem;
    display: flex;
    align-items: baseline;
    gap: 0.375rem;
}

.price-amount {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: -0.02em;
}

.price-currency {
    font-size: 1rem;
    color: var(--text-tertiary);
    font-weight: 500;
}

.checkout-subtitle {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.checkout-method-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checkout-method {
    display: flex;
    flex-direction: column;
    gap: 0.125rem;
    padding: 1rem 1.25rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
    cursor: pointer;
    text-align: left;
    font-family: var(--font);
    transition: border-color 0.2s;
}

.checkout-method:hover {
    border-color: var(--text-tertiary);
}

.checkout-method.active {
    border-color: var(--highlight);
}

.checkout-method-name {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--text-primary);
}

.checkout-method-desc {
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.checkout-manual {
    margin-top: 1.5rem;
    padding: 1.5rem;
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--surface);
}

.checkout-manual h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.checkout-manual p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.checkout-bank-details {
    margin: 1rem 0;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    font-size: 0.875rem;
}

.checkout-bank-details p {
    margin-bottom: 0.375rem;
}

.checkout-bank-details p:last-child {
    margin-bottom: 0;
}

.checkout-manual-note {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    font-size: 0.8125rem;
    color: var(--text-tertiary);
}

.checkout-login-gate {
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--text-secondary);
    line-height: 1.7;
}
.checkout-login-gate a {
    color: var(--highlight);
    font-weight: 600;
}

.checkout-billing {
    margin-bottom: 1.5rem;
}
.checkout-billing .form-group {
    margin-bottom: 1rem;
}
.checkout-billing select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: var(--font);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}
.checkout-billing select:focus {
    outline: 2px solid var(--highlight);
    outline-offset: -1px;
}

/* ─── Account page ─── */
.account-container {
    max-width: 500px;
    margin: 0 auto;
}

.account-section {
    padding-bottom: 2rem;
    margin-bottom: 2rem;
    border-bottom: 1px solid var(--border);
}

.account-section-last {
    border-bottom: none;
    margin-bottom: 0;
}

.account-section-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.account-subsection-title {
    font-size: 0.9375rem;
    font-weight: 600;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
    color: var(--text-secondary);
}

.account-container select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text-primary);
    font-size: 0.9375rem;
    font-family: var(--font);
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%23475569' stroke-width='2'%3E%3Cpolyline points='6 9 12 15 18 9'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
}
.account-container select:focus {
    outline: 2px solid var(--highlight);
    outline-offset: -1px;
}

.passkey-list {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.passkey-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 8px;
    gap: 0.75rem;
}

.passkey-info {
    display: flex;
    flex-direction: column;
    min-width: 0;
}

.passkey-name {
    font-weight: 500;
    color: var(--text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.passkey-date {
    font-size: 0.75rem;
    color: var(--text-tertiary);
}

.passkey-actions {
    display: flex;
    gap: 0.5rem;
    flex-shrink: 0;
}

.passkey-rename,
.passkey-delete {
    background: none;
    border: none;
    font-size: 0.8125rem;
    cursor: pointer;
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-family: var(--font);
}

.passkey-rename {
    color: var(--highlight);
}

.passkey-rename:hover {
    background: var(--bg-secondary);
}

.passkey-delete {
    color: #dc2626;
}

.passkey-delete:hover {
    background: #fef2f2;
}

[data-theme="dark"] .passkey-delete:hover {
    background: #1c1111;
}

/* ─── Reveal animation ─── */
.reveal {
    opacity: 0;
    transform: translateY(16px);
    transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ─── Keyframes ─── */
@keyframes fadeInUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(6px); }
}

/* ─── Responsive ─── */
@media (max-width: 900px) {
    .postura-grid,
    .cursos-grid,
    .inscripcion-content {
        grid-template-columns: 1fr;
    }

    .modalidad-grid {
        grid-template-columns: 1fr 1fr;
    }

    .prox-items {
        flex-direction: column;
        gap: 1.25rem;
    }
}

@media (max-width: 640px) {
    .modalidad-grid {
        grid-template-columns: 1fr;
    }

    .menu-toggle { display: flex; }

    .nav-links {
        position: fixed;
        inset: 0;
        background: var(--bg-primary);
        flex-direction: column;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        opacity: 0;
        visibility: hidden;
        z-index: 200;
    }

    .nav-links.ready {
        transition: opacity 0.3s, visibility 0.3s;
    }

    .nav-links.active {
        opacity: 1;
        visibility: visible;
    }

    /* Remove backdrop-filter when menu is open — it creates a containing block
       that traps the child's position:fixed inside the header */
    .header:has(.nav-links.active) {
        backdrop-filter: none !important;
        -webkit-backdrop-filter: none !important;
        transition: none !important;
    }

    .nav-links a {
        font-size: 1.25rem;
    }

    .menu-close {
        display: block;
        position: absolute;
        top: 1.25rem;
        right: var(--px);
        background: none;
        border: none;
        color: var(--text-primary);
        cursor: pointer;
        padding: 0.25rem;
    }

    .footer .container {
        flex-direction: column;
        text-align: center;
        gap: 1rem;
    }

    .email-form {
        flex-direction: column;
    }

    .login-method.preferred::after {
        display: none;
    }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    .hero-eyebrow, .hero-title, .hero-subtitle,
    .hero-support, .hero-cta, .scroll-hint {
        animation: none;
        opacity: 1;
    }
    .reveal {
        opacity: 1;
        transform: none;
        transition: none;
    }
    .scroll-hint svg { animation: none; }
}