/* ==========================================================
   LUXE AI
   UNDERSTANDING ECONOMY
   BOOK PAGE - LIGHT MODE
   ========================================================== */


/* ==========================================================
   RESET
   ========================================================== */

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


html {
    scroll-behavior: smooth;
}


body {
    background: #FFFFFF;
    color: #111111;

    font-family: "Cormorant Garamond", serif;

    line-height: 1.7;

    overflow-x: hidden;
}


/* ==========================================================
   IMAGENS
   ========================================================== */

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


/* ==========================================================
   LINKS
   ========================================================== */

a {
    text-decoration: none;
    color: #111111;
}


/* ==========================================================
   CONTAINER
   ========================================================== */

.container {
    width: min(1200px, 92%);
    margin: auto;
}


/* ==========================================================
   HEADER
   ========================================================== */

.header {
    position: sticky;
    top: 0;
    z-index: 1000;

    background: rgba(255, 255, 255, 0.97);

    backdrop-filter: blur(14px);

    border-bottom: 1px solid #D8D0C5;
}


.header .container {
    display: flex;

    justify-content: space-between;
    align-items: center;

    padding: 18px 0;
}


/* ==========================================================
   LOGO
   ========================================================== */

.logo {
    font-family: "Playfair Display", serif;

    font-size: 30px;

    font-weight: 700;

    color: #111111;
}


.logo span {
    color: #B88A32;
}


/* ==========================================================
   NAVIGATION
   ========================================================== */

nav {
    display: flex;

    gap: 26px;
}


nav a {
    color: #222222;

    font-size: 18px;

    font-weight: 600;

    transition: 0.3s ease;
}


nav a:hover {
    color: #B88A32;
}


/* ==========================================================
   THEME BUTTON
   ========================================================== */

.theme-button a {
    display: inline-flex;

    align-items: center;
    justify-content: center;

    padding: 11px 18px;

    border: 1px solid #B88A32;

    border-radius: 999px;

    color: #8A641F;

    font-family: "Playfair Display", serif;

    font-size: 16px;

    font-weight: 600;

    transition:
        background-color 0.3s ease,
        color 0.3s ease,
        transform 0.25s ease;
}


.theme-button a:hover {
    background: #B88A32;

    color: #FFFFFF;

    transform: translateY(-2px);
}


/* ==========================================================
   HERO
   ========================================================== */

.hero {
    padding: 70px 0 80px;

    background:
        radial-gradient(
            circle at top right,
            rgba(184, 138, 50, 0.10),
            transparent 40%
        );

    background-color: #FFFFFF;
}


.hero-grid {
    display: grid;

    grid-template-columns: 420px 1fr;

    gap: 60px;

    align-items: center;
}


/* ==========================================================
   BOOK COVER
   ========================================================== */

.hero-image {
    display: flex;

    justify-content: center;
}


.hero-image img {
    max-width: 350px;

    border-radius: 14px;

    box-shadow:
        0 25px 55px rgba(0, 0, 0, 0.20);

    transition:
        transform 0.4s ease,
        box-shadow 0.4s ease;
}


.hero-image img:hover {
    transform: translateY(-7px);

    box-shadow:
        0 32px 65px rgba(0, 0, 0, 0.25);
}


/* ==========================================================
   HERO CONTENT
   ========================================================== */

.hero-content {
    display: flex;

    flex-direction: column;

    justify-content: center;
}


/* ==========================================================
   PREMIUM LABEL
   ========================================================== */

.premium-label {
    display: inline-flex;

    align-items: center;

    width: max-content;

    padding: 9px 20px;

    margin-bottom: 22px;

    border: 1px solid #B88A32;

    border-radius: 999px;

    background: #F7F4EF;

    color: #7C591B;

    font-size: 15px;

    font-weight: 700;

    letter-spacing: 1.5px;

    text-transform: uppercase;
}


/* ==========================================================
   HERO TITLE
   ========================================================== */

.hero-content h1 {
    font-family: "Playfair Display", serif;

    font-size: 58px;

    line-height: 1.1;

    color: #111111;

    margin-bottom: 10px;
}


.hero-content h2 {
    font-family: "Cormorant Garamond", serif;

    font-size: 34px;

    font-weight: 500;

    color: #444444;

    margin-bottom: 24px;
}


/* ==========================================================
   HERO TEXT
   ========================================================== */

.hero-content p.hero-text {
    font-size: 22px;

    line-height: 1.65;

    color: #333333;

    max-width: 760px;

    margin-bottom: 20px;
}


.hero-content strong {
    color: #111111;
}


/* ==========================================================
   HERO HIGHLIGHTS
   ========================================================== */

.hero-highlights {
    list-style: none;

    display: flex;

    flex-direction: column;

    gap: 12px;

    margin: 12px 0 28px;
}


.hero-highlights li {
    font-size: 21px;

    line-height: 1.45;

    color: #222222;

    font-weight: 500;
}


/* ==========================================================
   PRICE BOX
   ========================================================== */

.price-box {
    padding: 22px 24px;

    margin-bottom: 28px;

    border: 1px solid #DDD4C7;

    border-left: 4px solid #B88A32;

    border-radius: 14px;

    background: #F8F5EF;
}


.price {
    font-family: "Playfair Display", serif;

    font-size: 36px;

    font-weight: 700;

    color: #8A641F;

    margin-bottom: 4px;
}


.price-box p {
    font-size: 19px;

    color: #555555;

    margin: 0;
}


/* ==========================================================
   HERO BUTTONS
   ========================================================== */

.hero-buttons {
    display: flex;

    flex-wrap: wrap;

    gap: 16px;

    margin-bottom: 10px;
}


.button-primary {
    display: inline-flex;

    justify-content: center;
    align-items: center;

    padding: 16px 30px;

    background: #B88A32;

    color: #FFFFFF;

    border-radius: 999px;

    font-family: "Playfair Display", serif;

    font-size: 18px;

    font-weight: 700;

    transition:
        transform 0.3s ease,
        background-color 0.3s ease,
        box-shadow 0.3s ease;

    box-shadow:
        0 14px 30px rgba(184, 138, 50, 0.25);
}


.button-primary:hover {
    background: #222222;

    color: #FFFFFF;

    transform: translateY(-3px);

    box-shadow:
        0 18px 35px rgba(0, 0, 0, 0.20);
}


.button-secondary {
    display: inline-flex;

    justify-content: center;
    align-items: center;

    padding: 15px 28px;

    border: 2px solid #B88A32;

    border-radius: 999px;

    color: #8A641F;

    font-size: 18px;

    font-weight: 700;

    transition:
        background-color 0.3s ease,
        color 0.3s ease,
        transform 0.3s ease;
}


.button-secondary:hover {
    background: #B88A32;

    color: #FFFFFF;

    transform: translateY(-2px);
}


/* ==========================================================
   SECTIONS
   ========================================================== */

.section {
    padding: 75px 0;

    background: #FFFFFF;
}


.light-section {
    background: #F8F5EF;
}


/* ==========================================================
   SECTION HEADING
   ========================================================== */

.section-heading {
    max-width: 900px;

    margin: 0 auto 45px;

    text-align: center;
}


.section-label {
    display: inline-block;

    margin-bottom: 18px;

    padding: 9px 20px;

    border-radius: 999px;

    background: #F1ECE4;

    color: #7C591B;

    font-size: 15px;

    font-weight: 700;

    letter-spacing: 1.5px;

    text-transform: uppercase;
}


.section-heading h2 {
    font-family: "Playfair Display", serif;

    font-size: 44px;

    font-weight: 700;

    color: #111111;

    margin-bottom: 22px;

    line-height: 1.2;
}


.section-heading p {
    font-size: 22px;

    line-height: 1.7;

    color: #3D3D3D;

    margin-bottom: 20px;
}


.section-heading strong {
    color: #111111;
}


.section-heading em {
    color: #333333;
}


/* ==========================================================
   BENEFITS GRID
   ========================================================== */

.benefits-grid {
    display: grid;

    grid-template-columns:
        repeat(auto-fit, minmax(270px, 1fr));

    gap: 24px;
}


/* ==========================================================
   BENEFIT CARD
   ========================================================== */

.benefit-card {
    background: #F5F2ED;

    border: 1px solid #DDD4C7;

    border-radius: 18px;

    padding: 30px;

    transition:
        transform 0.35s ease,
        box-shadow 0.35s ease,
        border-color 0.35s ease;

    box-shadow:
        0 10px 24px rgba(0, 0, 0, 0.08);
}


.benefit-card:hover {
    transform: translateY(-6px);

    box-shadow:
        0 20px 40px rgba(0, 0, 0, 0.13);

    border-color: #B88A32;
}


.benefit-card h3 {
    font-family: "Playfair Display", serif;

    font-size: 27px;

    color: #8A641F;

    margin-bottom: 14px;
}


.benefit-card p {
    font-size: 20px;

    color: #333333;

    line-height: 1.65;
}


/* ==========================================================
   BUY SECTION
   ========================================================== */

.buy-section {
    padding-top: 90px;

    padding-bottom: 90px;

    background:
        radial-gradient(
            circle at center,
            rgba(184, 138, 50, 0.08),
            transparent 55%
        );

    background-color: #FFFFFF;
}


.buy-button {
    margin-top: 20px;

    min-width: 300px;
}


/* ==========================================================
   CONTACT
   ========================================================== */

.contact-email {
    font-size: 30px !important;

    font-weight: 700;

    color: #8A641F !important;

    margin-top: 25px;
}


/* ==========================================================
   FOOTER
   ========================================================== */

.footer {
    background: #FFFFFF;

    color: #111111;

    padding: 45px 0 35px;

    border-top: 1px solid #DDD4C7;

    text-align: center;
}


.footer p {
    color: #555555;

    font-size: 18px;

    margin-bottom: 10px;
}


.footer-links {
    display: flex;

    justify-content: center;

    flex-wrap: wrap;

    gap: 24px;

    margin-bottom: 24px;
}


.footer-links a {
    color: #8A641F;

    font-size: 18px;

    transition: color 0.3s ease;
}


.footer-links a:hover {
    color: #222222;
}


/* ==========================================================
   SELECTION
   ========================================================== */

::selection {
    background: #D4AF37;

    color: #000000;
}


/* ==========================================================
   FOCUS
   ========================================================== */

button:focus,
a:focus {
    outline: 3px solid rgba(184, 138, 50, 0.35);

    outline-offset: 4px;
}


/* ==========================================================
   RESPONSIVE - 1100px
   ========================================================== */

@media (max-width: 1100px) {

    .hero-grid {
        grid-template-columns: 1fr;

        text-align: center;
    }


    .hero-image {
        order: -1;
    }


    .hero-content {
        align-items: center;
    }


    .hero-content p.hero-text {
        max-width: 900px;
    }


    .hero-highlights {
        width: 100%;

        max-width: 700px;

        text-align: left;
    }


    .hero-buttons {
        justify-content: center;
    }

}


/* ==========================================================
   RESPONSIVE - 900px
   ========================================================== */

@media (max-width: 900px) {

    .header .container {
        flex-direction: column;

        gap: 18px;
    }


    nav {
        flex-wrap: wrap;

        justify-content: center;

        gap: 14px;
    }


    .hero {
        padding: 50px 0 60px;
    }


    .hero-content h1 {
        font-size: 48px;
    }


    .hero-content h2 {
        font-size: 29px;
    }


    .hero-content p.hero-text {
        font-size: 21px;
    }


    .hero-highlights li {
        font-size: 20px;
    }


    .section {
        padding: 60px 0;
    }


    .section-heading h2 {
        font-size: 38px;
    }


    .section-heading p {
        font-size: 21px;
    }

}


/* ==========================================================
   RESPONSIVE - 700px
   ========================================================== */

@media (max-width: 700px) {

    .container {
        width: 94%;
    }


    .hero {
        padding: 40px 0 50px;
    }


    .hero-image img {
        max-width: 270px;
    }


    .hero-content h1 {
        font-size: 39px;
    }


    .hero-content h2 {
        font-size: 25px;
    }


    .hero-content p.hero-text {
        font-size: 20px;

        line-height: 1.6;
    }


    .hero-highlights {
        gap: 10px;
    }


    .hero-highlights li {
        font-size: 19px;
    }


    .price {
        font-size: 31px;
    }


    .hero-buttons {
        flex-direction: column;

        width: 100%;
    }


    .button-primary,
    .button-secondary {
        width: 100%;
    }


    .section {
        padding: 50px 0;
    }


    .section-heading h2 {
        font-size: 32px;
    }


    .section-heading p {
        font-size: 20px;
    }


    .benefit-card {
        padding: 25px;
    }


    .benefit-card h3 {
        font-size: 25px;
    }


    .benefit-card p {
        font-size: 19px;
    }


    .contact-email {
        font-size: 25px !important;

        word-break: break-word;
    }

}


/* ==========================================================
   RESPONSIVE - 480px
   ========================================================== */

@media (max-width: 480px) {

    .logo {
        font-size: 25px;
    }


    nav a {
        font-size: 16px;
    }


    .theme-button a {
        font-size: 15px;

        width: 100%;
    }


    .hero-image img {
        max-width: 220px;
    }


    .hero-content h1 {
        font-size: 32px;
    }


    .hero-content h2 {
        font-size: 22px;
    }


    .hero-content p.hero-text {
        font-size: 19px;
    }


    .hero-highlights li {
        font-size: 18px;
    }


    .price {
        font-size: 28px;
    }


    .price-box p {
        font-size: 18px;
    }


    .section-heading h2 {
        font-size: 28px;
    }


    .section-heading p {
        font-size: 19px;
    }


    .benefit-card h3 {
        font-size: 23px;
    }


    .benefit-card p {
        font-size: 18px;
    }


    .footer p {
        font-size: 17px;
    }


    .footer-links a {
        font-size: 17px;
    }

}