/* Brand Colors from 4As info materials - exact colors */
:root {
    --brand-orange: #F39200;
    --brand-red: #E84E40;
    --brand-pink: #D9649C;
    --brand-purple: #B565A7;
    --text-dark: #1F2937;
    --text-light: #6B7280;
    --white: #FFFFFF;
    --light-bg: #FFF8F0;
    --very-light-orange: #FFF5E6;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Header */
header {
    background: #F5F0F3;
    color: var(--text-dark);
    padding: 1.5rem 0;
    position: relative;
    z-index: 100;
    border-bottom: 2px solid var(--brand-purple);
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 2rem;
}

.header-brand {
    flex: 1;
}

.site-title {
    font-size: 1.8rem;
    margin: 0;
    color: var(--brand-purple);
    font-weight: 700;
    line-height: 1.2;
}

.site-subtitle {
    font-size: 0.95rem;
    margin: 0.25rem 0 0 0;
    color: var(--text-dark);
    font-weight: 700;
}

header nav {
    display: flex;
    gap: 2rem;
    align-items: center;
}

header nav a {
    color: var(--brand-purple);
    text-decoration: none;
    font-weight: 500;
    transition: opacity 0.3s;
}

header nav a:hover {
    opacity: 0.7;
}

.inspinity-logo {
    height: 50px;
    width: auto;
}

/* Hero Section */
.hero {
    background: var(--white);
    color: var(--text-dark);
    padding: 5rem 0 4rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    position: relative;
    z-index: 2;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.hero-text h2 {
    font-size: 2.8rem;
    margin-bottom: 1rem;
    font-weight: 700;
    color: var(--brand-purple);
    line-height: 1.2;
}

.hero .tagline {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--brand-orange);
    font-weight: 700;
}

.hero .subtitle {
    font-size: 1.1rem;
    color: var(--text-light);
    line-height: 1.6;
}

.hero-authors {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    background: transparent;
    padding: 2rem;
}

.authors-image {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    border: 4px solid var(--brand-orange);
}

.authors-info {
    flex: 1;
}

.authors-label {
    font-size: 0.9rem;
    color: var(--text-dark);
    margin-bottom: 0.25rem;
}

.authors-names {
    font-size: 1.2rem;
    color: var(--brand-purple);
    margin: 0;
}

/* Animated fluid shapes in hero */
.fluid-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.15;
    animation: float 20s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    background: var(--brand-orange);
    top: -100px;
    left: -100px;
    animation-delay: 0s;
}

.shape-2 {
    width: 200px;
    height: 200px;
    background: var(--brand-pink);
    top: 50%;
    right: -50px;
    animation-delay: 3s;
}

.shape-3 {
    width: 250px;
    height: 250px;
    background: var(--brand-red);
    bottom: -80px;
    left: 30%;
    animation-delay: 6s;
}

.shape-4 {
    width: 180px;
    height: 180px;
    background: var(--brand-purple);
    top: 20%;
    right: 20%;
    animation-delay: 9s;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0) translateX(0) scale(1);
    }
    25% {
        transform: translateY(-80px) translateX(60px) scale(1.2);
    }
    50% {
        transform: translateY(-150px) translateX(-80px) scale(0.85);
    }
    75% {
        transform: translateY(-90px) translateX(100px) scale(1.15);
    }
}

/* Hero Book Title */
.hero-book-title {
    text-align: center;
    font-size: 2.5rem;
    margin: 3rem 0 2rem 0;
    color: var(--brand-purple);
    position: relative;
    z-index: 2;
}

/* Featured Book in Hero */
.hero .featured-book {
    position: relative;
    z-index: 2;
    margin-bottom: 0;
}

/* Books Section */
.books {
    padding: 4rem 0;
    background-color: var(--white);
    position: relative;
    overflow: hidden;
}

.books::before,
.books::after {
    content: '';
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
    z-index: 0;
}

.books::before {
    width: 400px;
    height: 400px;
    background: var(--brand-pink);
    top: -100px;
    right: -150px;
}

.books::after {
    width: 300px;
    height: 300px;
    background: var(--brand-purple);
    bottom: -80px;
    left: -100px;
}

.books .container {
    position: relative;
    z-index: 1;
}

.books h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--brand-purple);
}

/* Featured Book */
.featured-book {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    margin-bottom: 4rem;
    padding: 2rem;
    background: rgba(255, 248, 240, 0.7);
    border-radius: 12px;
    align-items: center;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(243, 146, 0, 0.2);
}

.featured-book-image {
    position: relative;
    text-align: center;
}

.featured-book-image img {
    width: 100%;
    max-width: 350px;
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.15);
}

.badge-featured {
    position: absolute;
    top: 20px;
    right: 20px;
    background: var(--brand-orange);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-weight: 600;
    font-size: 0.9rem;
}

.featured-book-content h3 {
    font-size: 2rem;
    color: var(--brand-purple);
    margin-bottom: 0.5rem;
}

.book-subtitle {
    font-size: 1.2rem;
    color: var(--brand-red);
    margin-bottom: 0.5rem;
    font-style: italic;
}

.book-description {
    color: var(--text-dark);
    line-height: 1.8;
    margin: 1.5rem 0;
}

.book-highlights {
    list-style: none;
    padding: 0;
    margin: 1.5rem 0;
}

.book-highlights li {
    padding: 0.5rem 0;
    color: var(--text-dark);
    font-size: 1rem;
}

.book-cta {
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-top: 2rem;
}

.price-featured {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--brand-pink);
    margin: 0;
}

.additional-books-title {
    text-align: center;
    font-size: 1.8rem;
    margin: 3rem 0 2rem 0;
    color: var(--brand-purple);
}

/* Bundle Deal */
.bundle-deal {
    background: rgba(243, 146, 0, 0.1);
    color: var(--text-dark);
    padding: 3rem;
    border-radius: 16px;
    text-align: center;
    margin: 3rem 0;
    position: relative;
    overflow: hidden;
    border: 3px solid var(--brand-orange);
    box-shadow: 0 15px 50px rgba(243, 146, 0, 0.15);
}

.bundle-badge {
    background: var(--brand-orange);
    color: var(--white);
    display: inline-block;
    padding: 0.5rem 1.5rem;
    border-radius: 30px;
    font-weight: 700;
    font-size: 0.9rem;
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.bundle-deal h3 {
    font-size: 2.2rem;
    margin-bottom: 1rem;
    color: var(--brand-orange);
}

.bundle-description {
    font-size: 1.1rem;
    margin-bottom: 2rem;
    color: var(--text-dark);
}

.bundle-books {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 2rem;
    margin: 2rem 0;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.bundle-book-preview {
    background: rgba(255, 255, 255, 0.5);
    padding: 1rem;
    border-radius: 12px;
    border: 1px solid rgba(243, 146, 0, 0.3);
}

.bundle-book-preview img {
    width: 100%;
    max-width: 150px;
    border-radius: 8px;
    margin-bottom: 0.5rem;
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.bundle-book-preview p {
    font-size: 0.9rem;
    margin: 0;
    color: var(--text-dark);
}

.bundle-cta {
    margin-top: 2rem;
}

.bundle-price {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: var(--text-dark);
}

.old-price {
    text-decoration: line-through;
    opacity: 0.5;
    font-size: 1.5rem;
    margin-right: 1rem;
    color: var(--text-light);
}

.new-price {
    color: var(--brand-orange);
}

.books-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    align-items: end;
}

.book-card {
    background: var(--white);
    border-radius: 12px;
    padding: 1.5rem;
    text-align: center;
    transition: transform 0.3s, box-shadow 0.3s;
    border: 2px solid var(--very-light-orange);
    cursor: pointer;
}

.book-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(243, 146, 0, 0.2);
}

.book-card:nth-child(1) {
    transform: scale(0.9);
}

.book-card:nth-child(2) {
    transform: scale(0.95);
}

.book-card:nth-child(3) {
    transform: scale(1);
}

.book-card:nth-child(1):hover {
    transform: scale(0.9) translateY(-10px);
}

.book-card:nth-child(2):hover {
    transform: scale(0.95) translateY(-10px);
}

.book-image {
    margin-bottom: 1.5rem;
}

.book-image img {
    width: 100%;
    max-width: 250px;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
}

.book-card h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    color: var(--brand-purple);
    min-height: 3em;
}

.book-card .author {
    color: var(--text-light);
    margin-bottom: 1rem;
    font-size: 0.95rem;
}

.book-card .price {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--brand-pink);
    margin-bottom: 1rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.75rem 2rem;
    border: none;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    text-decoration: none;
}

.btn-primary {
    background: var(--brand-orange);
    color: var(--white);
}

.btn-primary:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(243, 146, 0, 0.4);
    background: var(--brand-red);
}

.btn-large {
    padding: 1rem 3rem;
    font-size: 1.1rem;
}

.btn-secondary {
    background: var(--brand-pink);
    color: var(--white);
    padding: 0.75rem 2rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s;
    display: inline-block;
}

.btn-secondary:hover {
    background: var(--brand-red);
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(217, 100, 156, 0.4);
}

/* Concepts Section */
.concepts {
    padding: 4rem 0;
    background: var(--light-bg);
}

.concepts h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--brand-purple);
}

.concepts-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 3rem;
}

.concept-card {
    text-align: center;
    padding: 2rem;
}

.concept-image {
    width: 100%;
    max-width: 350px;
    height: auto;
    margin-bottom: 1.5rem;
    border-radius: 12px;
}

.concept-card h3 {
    font-size: 1.5rem;
    color: var(--brand-purple);
    margin-bottom: 1rem;
}

.concept-card p {
    color: var(--text-light);
}

/* Order Form Section */
.order-form {
    padding: 4rem 0;
    background: var(--white);
}

.order-form h2 {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 2rem;
    color: var(--brand-purple);
}

#orderForm {
    max-width: 700px;
    margin: 0 auto;
    background: var(--light-bg);
    padding: 3rem;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid var(--very-light-orange);
    border-radius: 8px;
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--brand-orange);
}

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-light);
    font-size: 0.875rem;
}

.payment-options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.radio-option {
    display: flex;
    align-items: center;
    padding: 1rem;
    border: 2px solid var(--very-light-orange);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s;
}

.radio-option:hover {
    border-color: var(--brand-orange);
    background: var(--white);
}

.radio-option input[type="radio"] {
    width: auto;
    margin-right: 0.75rem;
}

.radio-option span {
    font-weight: 500;
}

.total-section-button {
    width: 100%;
    background: var(--brand-purple);
    color: var(--white);
    padding: 2rem;
    border-radius: 12px;
    margin: 2rem 0 0 0;
    text-align: center;
    border: none;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.total-section-button:hover {
    background: var(--brand-pink);
    transform: scale(1.02);
    box-shadow: 0 10px 30px rgba(181, 101, 167, 0.4);
}

.total-amount {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 1rem;
}

.total-label {
    font-size: 1.5rem;
    opacity: 0.9;
    font-weight: 500;
}

.total-price {
    font-size: 2.5rem;
    font-weight: 700;
}

.pay-now-text {
    font-size: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Conference Section */
.conference-section {
    background: var(--light-bg);
    padding: 3rem 0;
    border-top: 3px solid var(--brand-orange);
}

.conference-content {
    display: flex;
    align-items: center;
    gap: 3rem;
}

.conference-logo {
    height: 120px;
    width: auto;
}

.conference-info h3 {
    color: var(--brand-purple);
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.conference-info p {
    color: var(--text-dark);
    margin-bottom: 0.5rem;
    line-height: 1.6;
}

.conference-info p:last-of-type {
    margin-bottom: 1.5rem;
}

/* Footer */
footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--brand-orange);
}

.footer-section a {
    color: var(--brand-pink);
    text-decoration: none;
    transition: color 0.3s;
    display: block;
    margin-bottom: 0.5rem;
}

.footer-section a:hover {
    color: var(--brand-orange);
}

.linkedin-link {
    display: flex;
    align-items: center;
}

.footer-logo {
    height: 80px;
    width: auto;
}

.copyright {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    color: var(--text-light);
}

/* Responsive Design */
@media (max-width: 768px) {
    .site-title {
        font-size: 1.3rem;
    }

    .site-subtitle {
        font-size: 0.85rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .hero-text h2 {
        font-size: 2rem;
    }

    .hero .tagline {
        font-size: 1.1rem;
    }

    .hero .subtitle {
        font-size: 1rem;
    }

    .authors-image {
        width: 100px;
        height: 100px;
    }

    .featured-book {
        grid-template-columns: 1fr;
        padding: 1.5rem;
    }

    .books h2,
    .concepts h2,
    .order-form h2 {
        font-size: 2rem;
    }

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

    .book-card:nth-child(1),
    .book-card:nth-child(2),
    .book-card:nth-child(3) {
        transform: scale(1);
    }

    .book-card:nth-child(1):hover,
    .book-card:nth-child(2):hover,
    .book-card:nth-child(3):hover {
        transform: scale(1) translateY(-10px);
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    #orderForm {
        padding: 2rem 1.5rem;
    }

    header .container {
        flex-direction: column;
        gap: 1rem;
    }

    .header-brand {
        text-align: center;
    }

    .inspinity-logo {
        height: 35px;
    }

    .conference-content {
        flex-direction: column;
        text-align: center;
    }

    .conference-logo {
        height: 80px;
    }

    .conference-banner {
        padding: 2rem 1.5rem;
    }

    .conference-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .conference-title {
        font-size: 1.8rem;
    }

    .conference-subtitle {
        font-size: 1.1rem;
    }

    .conference-highlights {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .conference-cta-box {
        padding: 1.5rem;
    }

    .conference-value {
        font-size: 1rem;
    }

    .conference-cta-button {
        font-size: 1rem;
        padding: 1rem 1.5rem;
    }

    .conference-hero-logo {
        max-width: 200px;
    }

    .bundle-books {
        grid-template-columns: 1fr;
        gap: 1rem;
    }

    .bundle-deal {
        padding: 2rem 1.5rem;
    }

    .bundle-deal h3 {
        font-size: 1.6rem;
    }

    .total-section-button {
        flex-direction: column;
        gap: 1rem;
        padding: 1.5rem;
    }

    .total-amount {
        align-items: center;
    }

    .pay-now-text {
        font-size: 1.2rem;
    }
}

/* Conference Hero Section - Prominent Placement */
.conference-hero {
    background: linear-gradient(135deg, #FFF8F0 0%, #F5F0F3 50%, #FFF8F0 100%);
    padding: 4rem 0;
    margin: 0;
}

.conference-banner {
    position: relative;
    background: white;
    border-radius: 16px;
    padding: 3rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    border: 3px solid var(--brand-orange);
}

.conference-badge {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    background: linear-gradient(135deg, var(--brand-orange) 0%, var(--brand-red) 100%);
    color: white;
    padding: 0.5rem 2rem;
    border-radius: 25px;
    font-weight: 700;
    font-size: 0.9rem;
    letter-spacing: 1px;
    box-shadow: 0 4px 15px rgba(243, 146, 0, 0.4);
}

.conference-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: 3rem;
    align-items: center;
}

.conference-visual {
    position: relative;
    text-align: center;
}

.conference-hero-logo {
    width: 100%;
    max-width: 300px;
    height: auto;
    filter: drop-shadow(0 4px 20px rgba(0, 0, 0, 0.1));
}

.conference-date-badge {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    background: var(--brand-purple);
    color: white;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    margin-top: 1.5rem;
    box-shadow: 0 4px 15px rgba(181, 101, 167, 0.3);
}

.conference-date-badge .date-day {
    font-size: 3rem;
    font-weight: 700;
    line-height: 1;
}

.conference-date-badge .date-month {
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.conference-date-badge .date-year {
    font-size: 1rem;
    opacity: 0.9;
}

.conference-details {
    padding: 1rem 0;
}

.conference-title {
    font-size: 2.5rem;
    color: var(--brand-purple);
    margin-bottom: 1rem;
    font-weight: 700;
    line-height: 1.2;
}

.conference-subtitle {
    font-size: 1.3rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.5;
}

.conference-highlights {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.highlight-item {
    display: flex;
    gap: 1rem;
    align-items: start;
    padding: 1rem;
    background: var(--very-light-orange);
    border-radius: 8px;
    border-left: 4px solid var(--brand-orange);
}

.highlight-item strong {
    display: block;
    color: var(--brand-purple);
    font-size: 1rem;
    margin-bottom: 0.25rem;
}

.highlight-item p {
    color: var(--text-light);
    font-size: 0.9rem;
    margin: 0;
    line-height: 1.4;
}

.conference-cta-box {
    background: linear-gradient(135deg, #F5F0F3 0%, #FFF8F0 100%);
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    border: 2px solid var(--brand-purple);
}

.conference-value {
    font-size: 1.2rem;
    color: var(--brand-orange);
    margin-bottom: 1.5rem;
    font-weight: 600;
}

.conference-cta-button {
    font-size: 1.2rem;
    padding: 1.25rem 2.5rem;
    margin-bottom: 1rem;
    display: inline-block;
    text-decoration: none;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% {
        box-shadow: 0 4px 15px rgba(243, 146, 0, 0.4);
    }
    50% {
        box-shadow: 0 4px 25px rgba(243, 146, 0, 0.6);
    }
}

.conference-learn-more {
    color: var(--text-light);
    font-size: 0.95rem;
    margin: 0;
    font-style: italic;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}