/* Reset & Base */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    tab-size: 4;
    font-family: 'Inter', sans-serif;
    line-height: 1.5;
}

body {
    background-color: #f9fafb; /* gray-50 */
    color: #1f2937; /* gray-800 */
    font-family: 'Inter', sans-serif;
    -webkit-font-smoothing: antialiased;
}

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

button {
    cursor: pointer;
    font-family: inherit;
}

/* Typography & Fonts */
.font-heading {
    font-family: 'Oswald', sans-serif;
}

.font-arial {
    font-family: 'Arial', sans-serif;
}

/* Colors */
:root {
    --brand-blue: #1e3a8a;
    --brand-dark: #0f172a;
    --brand-accent: #facc15;
    --cta-green: #16a34a;
    --cta-green-hover: #15803d;
    --cta-green-light: #22c55e;
    --red-alert: #ef4444;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-brand-blue { color: var(--brand-blue); }
.text-gray-600 { color: #4b5563; }
.text-gray-500 { color: #6b7280; }
.text-red { color: var(--red-alert); }
.text-accent { color: var(--brand-accent); }
.text-white { color: #ffffff; }
.text-dark { color: var(--brand-dark); }
.bg-white { background-color: white; }
.bg-light { background-color: #f9fafb; }
.bg-gray-100 { background-color: #f3f4f6; }
.font-bold { font-weight: 700; }
.font-medium { font-weight: 500; }
.uppercase { text-transform: uppercase; }
.mb-8 { margin-bottom: 2rem; }
.mb-6 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 1rem; }
.mt-4 { margin-top: 1rem; }
.mt-6 { margin-top: 1.5rem; }
.mt-8 { margin-top: 2rem; }

/* Layout Containers */
.app-container {
    min-height: 100vh;
    padding-bottom: 0;
}

.container {
    max-width: 48rem; /* 3xl */
    margin-left: auto;
    margin-right: auto;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
}

.section {
    padding-top: 3rem;
    padding-bottom: 3rem;
}

@media (min-width: 768px) {
    .section {
        padding-top: 5rem;
        padding-bottom: 5rem;
    }
}

/* Hero Section */
.hero-section {
    background: linear-gradient(to bottom, #eff6ff, #ffffff);
    padding-top: 2rem;
    padding-bottom: 3rem;
    text-align: center;
}

.badge-pill {
    display: inline-block;
    background-color: rgba(30, 58, 138, 0.1);
    color: var(--brand-blue);
    font-weight: 700;
    padding: 0.25rem 1rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    margin-bottom: 1.5rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.hero-title {
    font-family: 'Arial', sans-serif;
    font-size: 1.5rem; /* text-2xl */
    line-height: 1.25;
    font-weight: 700;
    color: var(--brand-blue);
    margin-bottom: 2rem;
}

@media (min-width: 768px) {
    .hero-title {
        font-size: 2.25rem; /* text-4xl */
    }
}

.highlight-skew {
    background-color: var(--brand-accent);
    color: var(--brand-blue);
    padding-left: 0.5rem;
    padding-right: 0.5rem;
    display: inline-block;
    transform: skewX(-6deg);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: #4b5563;
    margin-bottom: 2rem;
    line-height: 1.625;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}

@media (min-width: 768px) {
    .hero-subtitle { font-size: 1.25rem; }
}

/* Product Image */
.product-image-wrapper {
    position: relative;
    width: 100%;
    max-width: 220px;
    margin: 0 auto 2.5rem;
    perspective: 1000px;
}

.product-image-container {
    position: relative;
    background-color: black;
    border-radius: 1.5rem;
    padding: 0.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    border: 4px solid #1f2937;
    transform: rotate(1deg);
    transition: transform 0.5s;
    overflow: hidden;
    aspect-ratio: 3/4;
}

.product-image-container:hover {
    transform: rotate(0deg);
}

.glare {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top right, rgba(255,255,255,0.1), transparent);
    pointer-events: none;
    z-index: 10;
    border-radius: 1.3rem;
}

.product-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 1.3rem;
}

.hero-text-box {
    background-color: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    border: 1px solid #f3f4f6;
    margin-bottom: 2rem;
    text-align: left;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
    color: #374151;
    line-height: 1.625;
}

/* Buttons */
.btn {
    position: relative;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 1rem 1.5rem;
    border-radius: 0.5rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-align: center;
    line-height: 1.25;
    border: none;
    width: 100%;
}

@media (min-width: 768px) {
    .btn { width: auto; margin-left: auto; margin-right: auto; }
    .btn-full { width: 100%; }
}

.btn-primary {
    background-image: linear-gradient(to bottom, var(--cta-green-light), var(--cta-green));
    color: white;
    border-bottom: 4px solid var(--cta-green-hover);
    font-size: 1.25rem;
}

.btn-primary:hover {
    transform: translateY(-4px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.btn-secondary {
    background-color: white;
    color: var(--cta-green);
    border: 2px solid var(--cta-green);
}

.btn-secondary:hover {
    background-color: #f0fdf4;
    transform: translateY(-4px);
}

.btn-pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: .7; }
}

/* Section Titles */
.section-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.875rem;
    font-weight: 700;
    text-align: center;
    color: var(--brand-blue);
    margin-bottom: 2rem;
    text-transform: uppercase;
    line-height: 1.25;
}

@media (min-width: 768px) {
    .section-title { font-size: 2.25rem; }
}

.section-desc {
    color: #4b5563;
    margin-bottom: 2rem;
    text-align: center;
    max-width: 42rem;
    margin-left: auto;
    margin-right: auto;
}

/* Info Cards (Plagiarism) */
.info-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    border-left-width: 4px;
    border-left-style: solid;
}

.border-blue { border-left-color: var(--brand-blue); }
.border-green { border-left-color: #22c55e; }

.flex-start {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.card-title-dark {
    font-weight: 700;
    color: var(--brand-dark);
}

.card-text-italic {
    font-size: 0.875rem;
    color: #4b5563;
    font-style: italic;
    margin-top: 0.25rem;
    line-height: 1.625;
}

.icon-blue { color: var(--brand-blue); }
.icon-green { color: #16a34a; }

/* Grid & Pain Points */
.grid-gap-4 {
    display: grid;
    gap: 1rem;
}

.pain-point-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    background-color: #f9fafb;
    padding: 1.25rem;
    border-radius: 0.5rem;
    border: 1px solid #f3f4f6;
}

.icon-bg-red {
    background-color: #fee2e2;
    color: #ef4444;
    padding: 0.5rem;
    border-radius: 9999px;
    flex-shrink: 0;
    display: flex;
}

.cta-box-blue {
    margin-top: 2rem;
    text-align: center;
    background-color: #eff6ff;
    padding: 1.5rem;
    border-radius: 0.75rem;
    border: 1px solid #dbeafe;
}

/* Benefits Grid */
.bg-dark { background-color: var(--brand-dark); }
.grid-2col {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .grid-2col { grid-template-columns: repeat(2, 1fr); }
    .col-span-2 { grid-column: span 2 / span 2; }
}

.benefit-card {
    background-color: rgba(255, 255, 255, 0.1);
    padding: 1.5rem;
    border-radius: 0.75rem;
    backdrop-filter: blur(4px);
}

.benefit-title {
    font-weight: 700;
    font-size: 1.25rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: white;
}

.benefit-text {
    font-size: 0.875rem;
    color: #d1d5db;
    line-height: 1.625;
}

/* Chapters */
.chapter-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem;
    background-color: white;
    border: 1px solid #f3f4f6;
    border-radius: 0.5rem;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    transition: border-color 0.2s;
    font-weight: 500;
    font-size: 0.875rem;
    color: #374151;
}

.chapter-item:hover {
    border-color: rgba(30, 58, 138, 0.3);
}

/* Bonuses */
.bg-gradient-orange {
    background-image: linear-gradient(to bottom right, #fefce8, #fff7ed);
}

.space-y-4 > * + * { margin-top: 1rem; }

.section-subtitle {
    text-align: center;
    color: #6b7280;
    margin-bottom: 2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    font-size: 0.75rem;
}

.bonus-card {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    background-color: white;
    padding: 1.25rem;
    border-radius: 0.75rem;
    border: 1px solid #fef08a;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    position: relative;
    overflow: hidden;
}

.bonus-badge {
    position: absolute;
    top: 0;
    right: 0;
    background-color: #facc15;
    color: #713f12;
    font-size: 0.625rem;
    font-weight: 700;
    padding: 0.25rem 0.5rem;
    border-bottom-left-radius: 0.5rem;
}

.icon-yellow { color: #eab308; margin-top: 0.25rem; flex-shrink: 0; }

.bonus-title {
    font-weight: 700;
    color: #111827;
    line-height: 1.25;
    margin-bottom: 0.25rem;
}

.bonus-desc {
    font-size: 0.875rem;
    color: #4b5563;
    line-height: 1.375;
}

/* Testimonials */
.testimonial-card {
    background-color: white;
    padding: 1.5rem;
    border-radius: 0.75rem;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    border: 1px solid #f3f4f6;
}

.testimonial-text {
    font-style: italic;
    color: #4b5563;
    margin-bottom: 1rem;
    line-height: 1.625;
}

.flex-center-left {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.avatar {
    width: 3.5rem;
    height: 3.5rem;
    border-radius: 9999px;
    object-fit: cover;
    border: 2px solid rgba(30, 58, 138, 0.1);
    flex-shrink: 0;
}

.avatar-name {
    font-weight: 700;
    font-size: 0.875rem;
    color: var(--brand-dark);
}

.avatar-role {
    font-size: 0.75rem;
    color: #6b7280;
}

/* Author */
.author-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2rem;
}

@media (min-width: 768px) {
    .author-container {
        flex-direction: row;
    }
}

.author-image-wrapper {
    width: 10rem;
    height: 10rem;
    background-color: #d1d5db;
    border-radius: 9999px;
    flex-shrink: 0;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    border: 4px solid white;
    overflow: hidden;
    position: relative;
}

.author-img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-content {
    text-align: center;
}

@media (min-width: 768px) {
    .author-content { text-align: left; }
}

.author-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--brand-blue);
    margin-bottom: 0.25rem;
}

.author-role {
    font-size: 0.875rem;
    color: rgba(30, 58, 138, 0.7);
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.author-bio {
    font-size: 0.875rem;
    color: #4b5563;
    margin-bottom: 1rem;
    line-height: 1.625;
}

.author-quote {
    font-size: 0.75rem;
    font-style: italic;
    color: #6b7280;
    border-left: 2px solid var(--brand-accent);
    padding-left: 0.75rem;
}

/* OFFER SECTION (Complex) */
.offer-section {
    background-color: var(--brand-blue);
    padding-top: 4rem;
    padding-bottom: 6rem;
    margin-top: 2rem;
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .offer-section {
        margin-left: 0;
        margin-right: 0;
        border-radius: 1.5rem;
        box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    }
}

.offer-bg-effect-1 {
    position: absolute;
    top: 2.5rem;
    left: 2.5rem;
    width: 8rem;
    height: 8rem;
    background-color: white;
    border-radius: 9999px;
    filter: blur(64px);
    opacity: 0.1;
    pointer-events: none;
}

.offer-bg-effect-2 {
    position: absolute;
    bottom: 2.5rem;
    right: 2.5rem;
    width: 12rem;
    height: 12rem;
    background-color: var(--brand-accent);
    border-radius: 9999px;
    filter: blur(64px);
    opacity: 0.1;
    pointer-events: none;
}

.offer-container {
    position: relative;
    z-index: 10;
    max-width: 32rem;
    margin: 0 auto;
    text-align: center;
    padding: 0 0.5rem;
}

.urgency-badges {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.badge-urgent {
    background-color: #dc2626;
    color: white;
    font-weight: 700;
    padding: 0.25rem 1rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    animation: pulse 2s infinite;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

.badge-counter {
    background-color: var(--brand-accent);
    color: var(--brand-dark);
    font-weight: 700;
    padding: 0.25rem 1.5rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

.offer-title {
    font-family: 'Oswald', sans-serif;
    font-size: 1.875rem;
    font-weight: 700;
    color: white;
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    line-height: 1.25;
}

.offer-subtitle {
    color: #bfdbfe;
    font-size: 0.875rem;
    margin-bottom: 2rem;
}

.offer-card {
    background-color: white;
    border-radius: 1rem;
    padding: 1.5rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    position: relative;
}

@media (min-width: 768px) {
    .offer-card { padding: 2rem; }
}

.price-tag {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: #1f2937;
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 0.25rem;
    font-size: 0.75rem;
    font-weight: 700;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.pricing-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    margin-top: 1.5rem;
}

.price-old {
    color: #9ca3af;
    text-decoration: line-through;
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

.price-new {
    font-size: 3.75rem; /* 6xl */
    font-weight: 800;
    color: var(--brand-blue);
    line-height: 1;
}

.price-currency {
    font-size: 1.125rem;
    font-weight: 700;
    color: #6b7280;
    margin-left: 0.25rem;
    vertical-align: top;
}

.offer-list {
    list-style: none;
    text-align: left;
    margin-bottom: 2rem;
    font-size: 0.875rem;
    color: #4b5563;
}

.offer-list li {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.icon-green-small { color: #22c55e; flex-shrink: 0; }

.secure-checkout {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    font-size: 0.75rem;
    color: #9ca3af;
}

.currency-notice {
    color: rgba(191, 219, 254, 0.9);
    font-size: 0.875rem;
    margin-top: 1.5rem;
    max-width: 20rem;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.625;
}

@media (min-width: 768px) {
    .currency-notice { font-size: 1rem; }
}

/* Guarantee */
.flex-center {
    display: flex;
    justify-content: center;
}

.guarantee-img {
    width: 8rem;
    object-fit: contain;
}

@media (min-width: 768px) {
    .guarantee-img { width: 10rem; }
}

/* FAQ */
.faq-item {
    background-color: #f9fafb;
    padding: 1.25rem;
    border-radius: 0.5rem;
    border: 1px solid #f9fafb;
}

.faq-question {
    font-weight: 700;
    color: var(--brand-blue);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.icon-accent { color: var(--brand-accent); flex-shrink: 0; }

.faq-answer {
    font-size: 0.875rem;
    color: #4b5563;
    padding-left: 1.5rem;
    line-height: 1.625;
}

/* Footer */
footer {
    background-color: #111827;
    color: #9ca3af;
    padding-top: 3rem;
    padding-bottom: 3rem;
    padding-left: 1.5rem;
    padding-right: 1.5rem;
    font-size: 0.75rem;
}

.footer-content {
    max-width: 48rem;
    margin: 0 auto;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-top: 1rem;
}

.footer-disclaimer {
    max-width: 32rem;
    margin: 1.5rem auto 0;
    opacity: 0.5;
    line-height: 1.625;
}