@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

:root {
    --primary: #3F2FC3;
    --primary-dark: #2e22a3;
    --secondary: #01F2B2;
    --secondary-dark: #01c892;
    --text: #0f172a;
    --muted: #64748b;
    --bg: #f4f5fb;
    --card: #ffffff;
    --card-dark: #111827;
}

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

body.landing-body {
    font-family: 'Inter', 'Segoe UI', system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    min-height: 100vh;
}

img {
    max-width: 100%;
    display: block;
}

.landing-shell {
    max-width: 1200px;
    margin: 0 auto;
    padding: 24px clamp(16px, 4vw, 48px) 48px;
}

.landing-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: 24px;
}

.brand {
    font-weight: 700;
    font-size: 1.1rem;
    color: var(--primary);
    text-decoration: none;
}

.nav-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
    align-items: center;
}

.nav-auth {
    position: relative;
    display: inline-flex;
    align-items: center;
}

.btn-user {
    background: linear-gradient(135deg, #0f172a, #4338ca);
    color: #fff !important;
    box-shadow: 0 18px 35px rgba(15, 23, 42, 0.35);
    border: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}

.btn-user .btn-user__icon {
    font-size: 1rem;
}

.btn-user .btn-user__caret {
    font-size: 0.75rem;
    opacity: 0.7;
}

.btn-user:hover {
    transform: translateY(-1px);
    box-shadow: 0 22px 40px rgba(15, 23, 42, 0.35);
}

.nav-auth__dropdown {
    position: absolute;
    top: calc(100% + 10px);
    right: 0;
    min-width: 220px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 18px 45px rgba(15, 23, 42, 0.15);
    padding: 12px;
    display: none;
    flex-direction: column;
    gap: 6px;
    z-index: 20;
}

.nav-auth.is-open .nav-auth__dropdown {
    display: flex;
}

.nav-auth__dropdown a,
.nav-auth__dropdown button {
    border: none;
    background: transparent;
    color: #0f172a;
    text-decoration: none;
    width: 100%;
    text-align: left;
    padding: 10px 12px;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
}

.nav-auth__dropdown a:hover,
.nav-auth__dropdown button:hover {
    background: rgba(63, 47, 195, 0.08);
}

.nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}

.hero-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 40px;
    align-items: center;
    padding: 48px 0;
}

.hero-copy h1 {
    font-size: clamp(2.2rem, 5vw, 3.4rem);
    margin-bottom: 16px;
}

.hero-copy .subtitle {
    color: var(--muted);
    margin-bottom: 24px;
    line-height: 1.6;
}

.eyebrow {
    text-transform: uppercase;
    letter-spacing: 0.16em;
    font-size: 0.75rem;
    color: var(--secondary-dark);
    margin-bottom: 12px;
    font-weight: 600;
}

.hero-ctas {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.hero-media {
    border-radius: 32px;
    padding: 12px;
    background: linear-gradient(135deg, rgba(63, 47, 195, 0.08), rgba(1, 242, 178, 0.15));
    border: 1px solid rgba(63, 47, 195, 0.2);
    box-shadow: 0 30px 60px rgba(15, 23, 42, 0.12);
}

.hero-media img {
    border-radius: 24px;
}

.section {
    margin-top: 56px;
    padding: 40px clamp(12px, 3vw, 24px);
    border-radius: 28px;
}

.section-light {
    background: var(--card);
    color: var(--text);
}

.section-dark {
    background: var(--card-dark);
    color: #f8fafc;
}

.section-heading {
    margin-bottom: 32px;
}

.section-heading h2 {
    font-size: clamp(1.7rem, 3vw, 2.4rem);
    margin-bottom: 12px;
}

.section-heading p {
    color: var(--muted);
}

.section-dark .section-heading p {
    color: rgba(248, 250, 252, 0.7);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.feature-card {
    background: rgba(63, 47, 195, 0.04);
    border: 1px solid rgba(63, 47, 195, 0.15);
    border-radius: 22px;
    padding: 20px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    min-height: 240px;
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 16px;
    background: linear-gradient(135deg, rgba(63, 47, 195, 0.95), rgba(1, 242, 178, 0.85));
    color: #fff;
    font-weight: 600;
    font-size: 1rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    letter-spacing: 0.05em;
}

.feature-card h3 {
    font-size: 1.05rem;
}

.feature-card p {
    color: var(--muted);
    line-height: 1.5;
}

.feature-card ul {
    list-style: none;
    padding-left: 0;
    margin: 0;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.feature-card ul li {
    position: relative;
    padding-left: 18px;
    color: #0f172a;
}

.feature-card ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 10px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--secondary);
}

.feature-card--muted {
    background: linear-gradient(145deg, #f9f9f9, #ececec);
    border: 1px solid #d9d9d9;
    color: #1f2937;
}

.feature-card--muted h3 {
    color: #1f2937;
}

.feature-card--muted .feature-icon {
    background: #d4d4d4;
    color: #1f2937;
}

.feature-card--muted p,
.feature-card--muted ul li {
    color: rgba(31, 41, 55, 0.8);
}

.feature-card--muted ul li::before {
    background: rgba(31, 41, 55, 0.4);
}

.catalog-toolbar {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.catalog-toolbar input,
.catalog-toolbar select {
    padding: 12px 16px;
    border-radius: 14px;
    border: 1px solid rgba(148, 163, 184, 0.4);
    background: rgba(255, 255, 255, 0.08);
    color: inherit;
    flex: 1;
    min-width: 220px;
}

.section-dark .catalog-toolbar input,
.section-dark .catalog-toolbar select {
    border-color: rgba(255, 255, 255, 0.2);
    background: rgba(255, 255, 255, 0.05);
}

.catalog-toolbar select option {
    color: #0f172a;
    background: #ffffff;
}

.section-dark .catalog-toolbar select option {
    background: #f8fafc;
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 20px;
}

.ebooks-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin-top: 10px;
    padding-left: 10px;
}

@media (max-width: 1200px) {
    .ebooks-grid {
        grid-template-columns: repeat(3, minmax(0, 1fr));
    }
}

@media (max-width: 900px) {
    .ebooks-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

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

.course-card,
.ebook-card {
    background: rgba(255, 255, 255, 0.08);
    border-radius: 20px;
    padding: 20px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.section-light .course-card,
.section-light .ebook-card {
    background: var(--card);
    border-color: rgba(15, 23, 42, 0.08);
}

.card-title-line {
    display: flex;
    flex-direction: column;
    /* um abaixo do outro */
    align-items: flex-start;
    /* mantém alinhado à esquerda */
    gap: 10px;
    /* espaçamento vertical */
}

.course-card h3,
.ebook-card h3 {
    font-size: 1.1rem;
}

.card-description,
.ebook-card p {
    color: var(--muted);
    line-height: 1.5;
}

.section-dark .card-description,
.section-dark .ebook-card p {
    color: rgba(248, 250, 252, 0.7);
}

.price-chip {
    font-weight: 600;
    background: rgba(1, 242, 178, 0.12);
    color: var(--secondary-dark);
    padding: 6px 12px;
    border-radius: 999px;
    font-size: 0.85rem;
    margin-bottom: 5px;
}

.section-dark .price-chip {
    background: rgba(1, 242, 178, 0.2);
    color: #0f172a;
}

.card-actions {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.ebook-card {
    background: var(--card);
    border: 1px solid rgba(15, 23, 42, 0.08);
}

.ebook-cover {
    height: 220px;
    min-height: 220px;
    border-radius: 16px;
    overflow: hidden;
    background: rgba(15, 23, 42, 0.04);
    display: flex;
    flex-shrink: 0;
}

.ebook-cover img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    flex: 1 1 auto;
}

.ebook-info {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.section-dark .ebook-card {
    background: rgba(17, 24, 39, 0.5);
    border-color: rgba(255, 255, 255, 0.1);
}

.section-footer {
    margin-top: 24px;
    text-align: center;
}

.community {
    background: linear-gradient(135deg, #3F2FC3, #01F2B2);
    color: #fff;
}

.community-card {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.final-cta {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: flex-start;
}

.landing-footer {
    margin-top: 56px;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    gap: 12px;
    font-size: 0.9rem;
    color: var(--muted);
}

.footer-links {
    display: flex;
    gap: 16px;
    flex-wrap: wrap;
}

.footer-links a {
    color: inherit;
    text-decoration: none;
}

.empty-state {
    grid-column: 1 / -1;
    text-align: center;
    color: var(--muted);
    padding: 32px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border-radius: 999px;
    padding: 12px 22px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-soft {
    background: rgba(148, 163, 184, 0.2);
    color: var(--text);
    border: 1px solid rgba(148, 163, 184, 0.5);
    box-shadow: none;
}

.section-dark .btn-soft {
    background: rgba(248, 250, 252, 0.08);
    color: #f8fafc;
    border-color: rgba(248, 250, 252, 0.25);
}

.btn-soft:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 25px rgba(15, 23, 42, 0.12);
}

.btn-primary {
    background: var(--primary);
    color: #fff;
    box-shadow: 0 18px 35px rgba(63, 47, 195, 0.35);
}

.btn-primary:hover {
    transform: translateY(-1px);
    background: var(--primary-dark);
}

.btn-course-free {
    background: var(--secondary);
    color: #0f172a;
    box-shadow: 0 18px 35px rgba(1, 242, 178, 0.35);
}

.btn-course-free:hover {
    transform: translateY(-1px);
    background: var(--secondary-dark);
}

.btn-course-paid {
    background: #facc15;
    color: #0f172a;
    box-shadow: 0 18px 35px rgba(250, 204, 21, 0.35);
}

.btn-course-paid:hover {
    transform: translateY(-1px);
    background: #eab308;
}

.btn-outline {
    border: 1px solid rgba(15, 23, 42, 0.15);
    color: var(--text);
    background: transparent;
}

.btn-ghost {
    background: rgba(63, 47, 195, 0.08);
    color: var(--primary);
}

.btn-link {
    background: transparent;
    color: var(--muted);
    padding-left: 4px;
}

.btn.btn-outline,
.btn.btn-ghost,
.btn.btn-link {
    box-shadow: none;
}

.btn-outline:hover,
.btn-ghost:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 25px rgba(15, 23, 42, 0.12);
}

.btn-link:hover {
    color: var(--secondary-dark);
}

.catalog-scroll {
    max-height: 520px;
    overflow-y: auto;
    padding-right: 8px;
    margin-top: 12px;
    border-radius: 20px;
    border: 1px solid rgba(248, 250, 252, 0.15);
    background: rgba(15, 23, 42, 0.1);
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.08);
}

.section-light .catalog-scroll {
    border-color: rgba(15, 23, 42, 0.08);
    background: rgba(15, 23, 42, 0.02);
    box-shadow: inset 0 0 0 1px rgba(15, 23, 42, 0.04);
}

.catalog-scroll::-webkit-scrollbar {
    width: 10px;
}

.catalog-scroll::-webkit-scrollbar-track {
    background: rgba(248, 250, 252, 0.08);
    border-radius: 999px;
}

.section-light .catalog-scroll::-webkit-scrollbar-track {
    background: rgba(15, 23, 42, 0.08);
}

.catalog-scroll::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, rgba(63, 47, 195, 0.9), rgba(1, 242, 178, 0.9));
    border-radius: 999px;
}

.catalog-scroll::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #3F2FC3, #01c892);
}

@media (max-width: 768px) {
    .landing-nav {
        flex-direction: column;
        gap: 16px;
    }

    .nav-links {
        justify-content: center;
    }

    .catalog-toolbar input,
    .catalog-toolbar select {
        flex: 100%;
    }

    .card-actions {
        flex-direction: column;
    }

    .landing-shell {
        padding-top: 32px;
    }
}