/* ============================================
   GLOBAL STYLES & RESET
   ============================================ */
:root {
    /* Premium Color Palette */
    --color-primary: #0F6B6B;
    --color-primary-light: #1F8F86;
    --color-primary-dark: #0B4A4A;
    --color-secondary: #F8D28A;
    --color-accent: #FFB347;
    --color-accent-dark: #E0892F;
    --color-success: #52B788;
    --color-error: #D62828;
    
    /* Gradient Backgrounds */
    --gradient-primary: linear-gradient(135deg, #0F6B6B 0%, #1F8F86 100%);
    --gradient-secondary: linear-gradient(135deg, #F8D28A 0%, #FFB347 100%);
    --gradient-accent: linear-gradient(135deg, #FFB347 0%, #E0892F 100%);
    --gradient-dark: linear-gradient(135deg, #082B2B 0%, #0B4A4A 100%);
    --gradient-light: linear-gradient(135deg, #F2FBF9 0%, #EAF6FF 100%);
    
    /* Neutrals */
    --color-white: #FFFFFF;
    --color-light-bg: #F2FBF9;
    --color-light-gray: #D6E7E4;
    --color-medium-gray: #5C7A7A;
    --color-dark-text: #0B2D2D;
    
    /* Typography */
    --font-primary: 'Manrope', 'Segoe UI', Arial, sans-serif;
    --font-display: 'DM Serif Display', 'Times New Roman', serif;
    --font-size-base: 16px;
    --line-height-base: 1.6;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 5rem;
    
    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    
    /* Shadows - Premium */
    --shadow-sm: 0 2px 8px rgba(15, 40, 90, 0.08);
    --shadow-md: 0 8px 24px rgba(15, 40, 90, 0.12);
    --shadow-lg: 0 16px 48px rgba(15, 40, 90, 0.18);
    --shadow-xl: 0 24px 64px rgba(15, 40, 90, 0.24);
    --shadow-book: 0 20px 60px rgba(15, 107, 107, 0.3);
    
    /* Transitions */
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-long: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-base);
    color: var(--color-dark-text);
    background: linear-gradient(180deg, #FBFEFD 0%, #F4FBF9 50%, #FFFFFF 100%);
    overflow-x: hidden;
    letter-spacing: 0.3px;
}

/* ============================================
   ANIMATIONS & KEYFRAMES
   ============================================ */

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes fadeInRight {
    from {
        opacity: 0;
        transform: translateX(30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(60px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes bounce-subtle {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

@keyframes float {
    0% {
        transform: translateY(0px);
    }
    50% {
        transform: translateY(-15px);
    }
    100% {
        transform: translateY(0px);
    }
}

@keyframes scaleIn {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

@keyframes gradientShift {
    0% {
        background-position: 0% 50%;
    }
    50% {
        background-position: 100% 50%;
    }
    100% {
        background-position: 0% 50%;
    }
}

@keyframes glowPulse {
    0%, 100% {
        box-shadow: 0 12px 30px rgba(15, 107, 107, 0.25);
    }
    50% {
        box-shadow: 0 18px 46px rgba(15, 107, 107, 0.4);
    }
}

@keyframes floatSoft {
    0% {
        transform: translateY(0) translateX(0);
    }
    50% {
        transform: translateY(-18px) translateX(8px);
    }
    100% {
        transform: translateY(0) translateX(0);
    }
}

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ============================================
   HEADER & NAVIGATION
   ============================================ */
.header {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.95);
    animation: fadeInDown 0.6s ease;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) 0;
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: 0.2px;
    cursor: pointer;
    transition: var(--transition);
}

.logo:hover {
    transform: scale(1.05);
}

.nav {
    display: flex;
    gap: var(--spacing-lg);
}

.nav-link {
    font-size: 0.95rem;
    color: var(--color-dark-text);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    padding: var(--spacing-xs) var(--spacing-sm);
    position: relative;
    overflow: hidden;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.4s ease;
}

.nav-link:hover::after {
    width: 100%;
}

.nav-link:hover {
    color: var(--color-primary);
}

/* Mobile: Hide nav on small screens */
@media (max-width: 768px) {
    .nav {
        gap: var(--spacing-md);
    }
    
    .nav-link {
        font-size: 0.9rem;
    }
}

/* ============================================
   TYPOGRAPHY
   ============================================ */
h1, h2, h3, h4, h5, h6 {
    font-weight: 800;
    line-height: 1.2;
    color: var(--color-dark-text);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-display);
    letter-spacing: -0.8px;
}

h2 {
    font-size: 2.8rem;
}

h3 {
    font-size: 1.3rem;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--color-dark-text);
    opacity: 0.9;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 700;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: var(--transition-long);
    text-align: center;
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-md);
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.2);
    transition: left 0.5s ease;
    z-index: 1;
}

.btn:hover::before {
    left: 100%;
}

.btn > * {
    position: relative;
    z-index: 2;
}

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

.hero .btn-primary,
.final-cta .btn-secondary {
    animation: glowPulse 3.8s ease-in-out infinite;
}

.btn-primary:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.btn-primary:active {
    transform: translateY(-2px);
}

.btn-primary:disabled {
    background: var(--color-light-gray);
    cursor: not-allowed;
    opacity: 0.7;
    box-shadow: var(--shadow-sm);
}

.btn-secondary {
    background: var(--gradient-secondary);
    color: var(--color-dark-text);
}

.btn-secondary:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-4px);
}

.btn-block {
    width: 100%;
}

/* ============================================
   HERO SECTION
   ============================================ */
.hero {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(120deg, #F4FBF9 0%, #EAF6FF 40%, #FFF6E8 100%);
    background-size: 200% 200%;
    position: relative;
    overflow: hidden;
    animation: gradientShift 14s ease infinite;
}

.hero-orb {
    position: absolute;
    border-radius: 999px;
    filter: blur(2px);
    opacity: 0.6;
    pointer-events: none;
    animation: floatSoft 10s ease-in-out infinite;
}

.hero-orb--one {
    top: -40%;
    right: -10%;
    width: 520px;
    height: 520px;
    background: radial-gradient(circle, rgba(31, 143, 134, 0.18) 0%, transparent 70%);
}

.hero-orb--two {
    bottom: -15%;
    left: -8%;
    width: 420px;
    height: 420px;
    background: radial-gradient(circle, rgba(255, 179, 71, 0.2) 0%, transparent 70%);
    animation-duration: 12s;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    padding: var(--spacing-lg) 0;
    animation: fadeInLeft 0.8s ease 0.2s both;
}

.hero-headline {
    font-size: 3.5rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.15;
    background: linear-gradient(135deg, #0B4A4A 0%, #1F8F86 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-weight: 900;
    letter-spacing: -1px;
}

.hero-subtitle {
    font-size: 1.2rem;
    color: var(--color-medium-gray);
    margin-bottom: var(--spacing-xl);
    line-height: 1.8;
    font-weight: 500;
}

.hero-image {
    animation: fadeInRight 0.8s ease 0.4s both;
}

.book-container {
    position: relative;
    display: inline-block;
    width: 100%;
}

.ebook-mockup {
    width: 100%;
    max-width: 400px;
    height: auto;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-book);
    object-fit: cover;
    transition: var(--transition-long);
    animation: float 4s ease-in-out infinite;
}

.ebook-mockup:hover {
    transform: translateY(-10px) scale(1.02);
    box-shadow: var(--shadow-xl);
    filter: brightness(1.05);
}

.book-shadow {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 30px;
    background: radial-gradient(ellipse at center, rgba(15, 107, 107, 0.2) 0%, transparent 70%);
    filter: blur(20px);
    border-radius: 50%;
}

/* Mobile: Stack grid */
@media (max-width: 768px) {
    .hero-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .hero-headline {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-content {
        padding: 0;
    }
}

/* ============================================
   BENEFITS SECTION
   ============================================ */
.benefits {
    padding: var(--spacing-3xl) 0;
    background: var(--color-white);
    position: relative;
    overflow: hidden;
}

.benefits::before {
    content: '';
    position: absolute;
    top: -200px;
    right: 0;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 179, 71, 0.08) 0%, transparent 70%);
    border-radius: 50%;
}

.section-title {
    text-align: center;
    font-size: 2.8rem;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, #0B4A4A 0%, #1F8F86 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-subtitle {
    text-align: center;
    font-size: 1.1rem;
    color: var(--color-medium-gray);
    max-width: 600px;
    margin: 0 auto var(--spacing-3xl);
    font-weight: 500;
}

.benefits-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    position: relative;
    z-index: 2;
}

.benefit-block {
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    text-align: center;
    transition: var(--transition-long);
    position: relative;
    overflow: hidden;
}

.benefit-block::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.benefit-block:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-8px);
}

.benefit-block:hover::before {
    transform: scaleX(1);
}

.benefit-icon {
    width: 72px;
    height: 72px;
    margin-bottom: var(--spacing-md);
    display: inline-block;
    border-radius: 18px;
    background: var(--gradient-secondary);
    padding: 12px;
    transition: var(--transition);
    animation: bounce-subtle 2s ease-in-out infinite;
}

.benefit-icon img {
    width: 100%;
    height: 100%;
    display: block;
    object-fit: contain;
}

.benefit-block:hover .benefit-icon {
    transform: scale(1.15) rotate(10deg);
    animation: none;
}

.benefit-title {
    font-size: 1.4rem;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary);
    font-weight: 800;
}

.benefit-description {
    color: var(--color-medium-gray);
    font-size: 0.95rem;
    line-height: 1.8;
    font-weight: 500;
}

/* ============================================
   EMAIL CAPTURE SECTION
   ============================================ */
.email-section {
    padding: var(--spacing-3xl) 0;
    background: linear-gradient(135deg, var(--color-light-bg) 0%, #FFF6E8 100%);
    position: relative;
    overflow: hidden;
}

.email-section::before {
    content: '';
    position: absolute;
    top: -100px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(31, 143, 134, 0.12) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.form-wrapper {
    max-width: 550px;
    margin: var(--spacing-xl) auto 0;
    background: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    position: relative;
    z-index: 2;
    border: 1px solid rgba(15, 107, 107, 0.08);
    transition: var(--transition-long);
}

.form-wrapper:hover {
    box-shadow: var(--shadow-xl);
    transform: translateY(-6px);
    transition: var(--transition-long);
}

.email-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
    animation: fadeInUp 0.6s ease backwards;
}

.form-group:nth-child(2) { animation-delay: 0.1s; }
.form-group:nth-child(3) { animation-delay: 0.2s; }

.form-label {
    font-weight: 700;
    color: var(--color-dark-text);
    font-size: 0.95rem;
    letter-spacing: 0.3px;
}

.form-input {
    padding: 0.9rem var(--spacing-md);
    border: 2px solid var(--color-light-gray);
    border-radius: var(--radius-lg);
    font-size: 1rem;
    font-family: var(--font-primary);
    transition: var(--transition);
    background-color: var(--color-white);
    font-weight: 500;
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(15, 107, 107, 0.15);
    background-color: rgba(15, 107, 107, 0.02);
}

.form-input::placeholder {
    color: var(--color-medium-gray);
    font-weight: 400;
}

.form-error {
    font-size: 0.85rem;
    color: var(--color-error);
    display: none;
    margin-top: -var(--spacing-xs);
    font-weight: 600;
    animation: slideInUp 0.3s ease;
}

.form-error.show {
    display: block;
}

/* Form Messages */
.form-message {
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    font-weight: 600;
    text-align: center;
    animation: slideInUp 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.success-message {
    background: linear-gradient(135deg, #E8F5E9 0%, #C8E6C9 100%);
    color: var(--color-success);
    border: 2px solid var(--color-success);
}

.error-message {
    background: linear-gradient(135deg, #FFEBEE 0%, #FFCDD2 100%);
    color: var(--color-error);
    border: 2px solid var(--color-error);
}

.form-note {
    text-align: center;
    font-size: 0.85rem;
    color: var(--color-medium-gray);
    margin: 0;
    font-weight: 600;
}

/* Mobile: Form adjustments */
@media (max-width: 768px) {
    .form-wrapper {
        padding: var(--spacing-md);
    }
}

/* ============================================
   FINAL CTA SECTION
   ============================================ */
.final-cta {
    padding: var(--spacing-3xl) 0;
    background: var(--gradient-dark);
    color: var(--color-white);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.final-cta::before {
    content: '';
    position: absolute;
    top: -200px;
    left: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(255, 179, 71, 0.16) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 8s ease-in-out infinite;
}

.final-cta::after {
    content: '';
    position: absolute;
    bottom: -100px;
    right: -100px;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(31, 143, 134, 0.16) 0%, transparent 70%);
    border-radius: 50%;
    animation: float 10s ease-in-out infinite;
}

.cta-headline {
    font-size: 2.8rem;
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 2;
    font-weight: 900;
    letter-spacing: -1px;
}

.cta-subtitle {
    font-size: 1.1rem;
    color: rgba(255, 255, 255, 0.9);
    max-width: 600px;
    margin: 0 auto var(--spacing-lg);
    position: relative;
    z-index: 2;
    font-weight: 500;
}

.reveal {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.7s ease, transform 0.7s ease;
    will-change: opacity, transform;
}

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

/* ============================================
   FOOTER
   ============================================ */
.footer {
    background: var(--color-dark-text);
    color: var(--color-white);
    padding: var(--spacing-xl) 0;
    text-align: center;
    font-size: 0.9rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.footer p {
    margin: 0;
    font-weight: 500;
    letter-spacing: 0.3px;
}

.footer a {
    color: var(--color-secondary);
    text-decoration: none;
    transition: var(--transition);
    font-weight: 600;
}

.footer a:hover {
    text-decoration: underline;
    color: #FFB8BD;
}

/* ============================================
   RESPONSIVE UTILITIES & MOBILE OPTIMIZATION
   ============================================ */

/* Hide loader spinner by default */
#submitLoader {
    display: none;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    html {
        scroll-behavior: auto;
    }
    
    * {
        animation: none !important;
        transition: none !important;
    }
}

/* Print styles */
@media print {
    .header,
    .nav,
    .btn,
    .email-section,
    .footer {
        display: none;
    }
}

/* Very small devices */
@media (max-width: 480px) {
    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    h2 {
        font-size: 1.75rem;
    }
    
    .hero-headline {
        font-size: 1.5rem;
    }
    
    .btn {
        padding: 0.875rem 1.5rem;
        font-size: 0.95rem;
    }

    .section-title {
        font-size: 2rem;
    }

    .hero-orb--one,
    .hero-orb--two {
        width: 220px;
        height: 220px;
    }
}

/* Large screens - Enhance animations */
@media (min-width: 1024px) {
    .benefit-block {
        border-bottom: 4px solid transparent;
        background-clip: padding-box, border-box;
        background-image: linear-gradient(var(--color-white), var(--color-white)), var(--gradient-primary);
    }

    .benefit-block:hover {
        background-image: linear-gradient(var(--color-white), var(--color-white)), var(--gradient-primary);
    }
}

/* Hero Mobile Updates */
@media (max-width: 768px) {
    .hero-headline {
        font-size: 2.2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .hero-content {
        animation: fadeInUp 0.8s ease 0.2s both;
    }

    .hero-image {
        animation: fadeInUp 0.8s ease 0.4s both;
    }
    
    .hero-orb--one,
    .hero-orb--two {
        width: 300px;
        height: 300px;
    }
}

/* Final CTA Mobile */
@media (max-width: 768px) {
    .final-cta {
        padding: var(--spacing-xl) 0;
    }
    
    .cta-headline {
        font-size: 1.8rem;
    }
    
    .cta-subtitle {
        font-size: 1rem;
    }
}