/* ===========================
   AMANATION-inspired Design System
   =========================== */

/* CSS Custom Properties */
:root {
    /* Colors - AMANATION inspired with Saizeriya touch */
    --color-black: #000000;
    --color-white: #ffffff;
    --color-accent: #e4691d;          /* Orange from AMANATION */
    --color-saize-green: #2D5017;     /* Saizeriya brand green */
    --color-gray-light: #f5f5f5;
    --color-gray-medium: #999999;
    --color-gray-dark: #333333;
    
    /* Typography */
    --font-display: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-japanese: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-weight-light: 300;
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --font-weight-black: 900;
    
    /* Spacing */
    --space-xs: 8px;
    --space-sm: 16px;
    --space-md: 24px;
    --space-lg: 40px;
    --space-xl: 60px;
    --space-2xl: 80px;
    --space-3xl: 120px;
    
    /* Layout */
    --container-width: 1200px;
    --container-padding: 20px;
    --border-radius: 8px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-index scale */
    --z-loading: 9999;
    --z-header: 1000;
    --z-overlay: 999;
    --z-modal: 998;
    --z-dropdown: 997;
}

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-japanese);
    font-weight: var(--font-weight-normal);
    line-height: 1.6;
    color: var(--color-black);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* Typography Scale */
.text-xs { font-size: 12px; }
.text-sm { font-size: 14px; }
.text-base { font-size: 16px; }
.text-lg { font-size: 18px; }
.text-xl { font-size: 20px; }
.text-2xl { font-size: 24px; }
.text-3xl { font-size: 30px; }
.text-4xl { font-size: 36px; }
.text-5xl { font-size: 48px; }
.text-6xl { font-size: 60px; }

/* ===========================
   Loading Screen
   =========================== */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-loading);
    transition: opacity 0.5s ease, visibility 0.5s ease;
}

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

.loading-logo {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    animation: pulse 2s infinite;
}

.loading-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-dark);
    margin-bottom: var(--space-lg);
    letter-spacing: 0.1em;
}

.loading-progress {
    width: 200px;
    height: 2px;
    background: var(--color-gray-light);
    margin: 0 auto;
    overflow: hidden;
}

.loading-bar {
    width: 100%;
    height: 100%;
    background: var(--color-accent);
    animation: loading 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes loading {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

.loading-screen.hidden {
    opacity: 0;
    visibility: hidden;
}

/* ===========================
   Header
   =========================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 80px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    z-index: var(--z-header);
    transition: var(--transition);
}

.header-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.header-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-display);
    font-weight: var(--font-weight-bold);
    font-size: 1.25rem;
    color: var(--color-black);
    text-decoration: none;
}

.logo-icon {
    font-size: 1.5rem;
}

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

.nav-link {
    font-family: var(--font-display);
    font-size: 0.9rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-black);
    text-decoration: none;
    position: relative;
    transition: var(--transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--color-accent);
    transition: var(--transition);
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.menu-line {
    width: 20px;
    height: 2px;
    background: var(--color-black);
    transition: var(--transition);
}

.menu-text {
    font-family: var(--font-display);
    font-size: 0.7rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-black);
    margin-top: 2px;
}

/* Mobile Menu */
.mobile-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: var(--color-black);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-overlay);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-slow);
}

.mobile-overlay.active {
    opacity: 1;
    visibility: visible;
}

.mobile-nav {
    display: flex;
    flex-direction: column;
    gap: var(--space-lg);
    text-align: center;
}

.mobile-link {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-white);
    text-decoration: none;
    transition: var(--transition);
}

.mobile-link:hover {
    color: var(--color-accent);
}

/* ===========================
   Hero Section
   =========================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    background: var(--color-white);
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.grain-texture {
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background-image: 
        radial-gradient(circle, rgba(0, 0, 0, 0.02) 1px, transparent 1px),
        radial-gradient(circle, rgba(228, 105, 29, 0.03) 1px, transparent 1px);
    background-size: 15px 15px, 25px 25px;
    background-position: 0 0, 8px 8px;
    opacity: 0.6;
    pointer-events: none;
    z-index: 1;
}

.grain-texture::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(45deg, transparent 30%, rgba(228, 105, 29, 0.01) 50%, transparent 70%),
        linear-gradient(-45deg, transparent 30%, rgba(45, 80, 23, 0.01) 50%, transparent 70%);
    background-size: 100px 100px, 150px 150px;
}

.hero-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-3xl);
    align-items: center;
    position: relative;
    z-index: 2;
}

.hero-content {
    max-width: 600px;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: var(--font-weight-black);
    line-height: 1.1;
    margin-bottom: var(--space-lg);
}

.title-line {
    display: block;
}

.title-line.accent {
    color: var(--color-accent);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-gray-dark);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
}

.hero-stats {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
}

.stat-item {
    text-align: left;
}

.stat-number {
    display: block;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-accent);
    line-height: 1;
}

.stat-label {
    font-size: 0.9rem;
    color: var(--color-gray-medium);
}

/* Hero Visual */
.hero-visual {
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    align-items: center;
    gap: var(--space-xl);
    height: 100%;
    padding-top: var(--space-lg);
    position: static !important;
    transform: none !important;
}

.visual-main {
    position: relative;
    width: 100%;
    max-width: 450px;
}

.hero-video {
    width: 100%;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.15);
    position: relative;
}

.hero-video video {
    width: 100%;
    height: auto;
    display: block;
}

.video-overlay {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    pointer-events: none;
}

.overlay-badge {
    background: rgba(228, 105, 29, 0.9);
    color: white;
    padding: var(--space-xs) var(--space-sm);
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: var(--font-weight-medium);
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.food-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-sm);
    max-width: 450px;
    position: static !important;
    transform: none !important;
}

.food-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm);
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(228, 105, 29, 0.1);
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    backdrop-filter: blur(10px);
}

.food-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 10px 30px rgba(228, 105, 29, 0.2);
    background: rgba(255, 255, 255, 0.95);
    border-color: rgba(228, 105, 29, 0.3);
}

.food-item .material-icons {
    font-size: 2rem;
    color: var(--color-accent);
}

.food-name {
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-dark);
    text-align: center;
    font-size: 0.8rem;
}

/* Scroll Indicator */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-lg);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    color: var(--color-gray-medium);
}

.scroll-text {
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: var(--font-weight-medium);
    letter-spacing: 0.2em;
}

.scroll-arrow {
    width: 1px;
    height: 30px;
    background: var(--color-gray-medium);
    animation: scrollMove 2s infinite;
}

@keyframes scrollMove {
    0%, 100% { opacity: 0; transform: translateY(-10px); }
    50% { opacity: 1; transform: translateY(0); }
}

/* ===========================
   CTA Buttons
   =========================== */
.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    background: var(--color-black);
    color: var(--color-white);
    border: none;
    border-radius: 50px;
    font-family: var(--font-japanese);
    font-size: 1rem;
    font-weight: var(--font-weight-semibold);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    opacity: 1 !important;
    visibility: visible !important;
}

.cta-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, var(--color-accent), transparent);
    transition: var(--transition-slow);
}

.cta-primary:hover::before {
    left: 100%;
}

.cta-primary:hover {
    background: var(--color-accent);
    transform: translateY(-2px);
}

.cta-primary.large {
    padding: var(--space-lg) var(--space-xl);
    font-size: 1.125rem;
    flex-direction: column;
    gap: var(--space-xs);
}

.cta-subtitle {
    font-size: 0.875rem;
    opacity: 0.8;
}

.cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    background: transparent;
    color: var(--color-black);
    border: 1px solid var(--color-black);
    border-radius: 50px;
    font-family: var(--font-japanese);
    font-size: 1rem;
    font-weight: var(--font-weight-medium);
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
}

.cta-secondary:hover {
    background: var(--color-black);
    color: var(--color-white);
}

/* ===========================
   Section Layouts
   =========================== */
.section-container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: var(--space-3xl) var(--container-padding);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 4vw, 3rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.2;
    margin-bottom: var(--space-xl);
    text-align: center;
}

.section-title .accent {
    color: var(--color-accent);
}

.section-title .saize-accent {
    color: var(--color-saize-green);
}

/* ===========================
   Story Section
   =========================== */
.story-section {
    background: var(--color-white);
}

.story-intro {
    margin-bottom: var(--space-3xl);
}

.problems-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg) var(--space-xl);
    margin-bottom: var(--space-3xl);
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.problem-card {
    padding: var(--space-lg) var(--space-xl);
    background: var(--color-white);
    border: 1px solid #eee;
    border-radius: 16px;
    text-align: center;
    transition: var(--transition);
    min-height: 180px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.problem-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.12);
    border-color: rgba(228, 105, 29, 0.2);
}

.card-icon {
    margin-bottom: var(--space-md);
}

.card-icon .material-icons {
    font-size: 3rem;
    color: var(--color-accent);
}

.card-title {
    font-size: 1.3rem;
    font-weight: var(--font-weight-bold);
    margin: var(--space-md) 0 var(--space-sm);
    color: var(--color-gray-dark);
    line-height: 1.3;
}

.card-description {
    color: var(--color-gray-medium);
    line-height: 1.6;
    font-size: 0.92rem;
    max-width: 100%;
}

/* Story Reveal */
.story-reveal {
    text-align: center;
}

.reveal-title {
    font-family: var(--font-display);
    font-size: clamp(1.875rem, 4vw, 2.5rem);
    font-weight: var(--font-weight-bold);
    line-height: 1.3;
    margin-bottom: var(--space-xl);
}

.formula-container {
    margin-bottom: var(--space-xl);
}

.formula-box {
    background: var(--color-black);
    color: var(--color-white);
    padding: var(--space-lg);
    border-radius: var(--border-radius);
    margin-bottom: var(--space-md);
}

.formula-text {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: var(--font-weight-semibold);
}

.formula-description {
    color: var(--color-gray-dark);
}

/* ===========================
   Method Section
   =========================== */
.method-section {
    background: var(--color-gray-light);
}

.method-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-lg) var(--space-xl);
    max-width: 1000px;
    margin: 0 auto;
}

.method-card {
    background: var(--color-white);
    border: 1px solid #eee;
    padding: var(--space-lg) var(--space-xl);
    border-radius: 16px;
    transition: var(--transition);
    text-align: center;
    min-height: 280px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    position: relative;
    overflow: hidden;
}

.method-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.12);
    border-color: rgba(228, 105, 29, 0.2);
}

.method-icon {
    margin-bottom: var(--space-md);
}

.method-icon .material-icons {
    font-size: 3rem;
    color: var(--color-accent);
}

.method-title {
    font-size: 1.25rem;
    font-weight: var(--font-weight-bold);
    margin: var(--space-md) 0 var(--space-sm);
    color: var(--color-gray-dark);
    line-height: 1.3;
}

.method-description {
    color: var(--color-gray-medium);
    margin-bottom: var(--space-md);
    line-height: 1.6;
    font-size: 0.95rem;
    flex-grow: 1;
}

.method-example {
    background: rgba(228, 105, 29, 0.05);
    padding: var(--space-sm) var(--space-md);
    border-radius: 8px;
    font-size: 0.85rem;
    border-left: 3px solid var(--color-accent);
    text-align: left;
    margin-top: auto;
}

/* ===========================
   Author Section
   =========================== */
.author-section {
    background: var(--color-white);
}

.author-content {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--space-3xl);
    align-items: center;
}

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

.author-avatar {
    width: 200px;
    height: 200px;
    border-radius: 50%;
    background: var(--color-gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--space-md);
    overflow: hidden;
    position: relative;
}

.avatar-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.author-avatar .material-icons {
    font-size: 3rem;
    color: var(--color-accent);
    margin-bottom: var(--space-xs);
}

.avatar-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
}

.avatar-text {
    font-size: 0.8rem;
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-dark);
    text-align: center;
}

.author-badge {
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-sm) var(--space-md);
    border-radius: 20px;
    font-weight: var(--font-weight-semibold);
    font-size: 0.9rem;
    display: inline-block;
}

.author-info .section-title {
    text-align: left;
    margin-bottom: var(--space-md);
}

.author-name {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: var(--font-weight-bold);
    color: var(--color-saize-green);
    margin-bottom: var(--space-lg);
}

.author-stats {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.author-roles {
    display: flex;
    gap: var(--space-sm);
    margin-bottom: var(--space-lg);
    flex-wrap: wrap;
}

.role-tag {
    background: var(--color-gray-light);
    padding: var(--space-sm) var(--space-md);
    border-radius: 15px;
    font-size: 0.875rem;
    color: var(--color-gray-dark);
}

.author-description {
    color: var(--color-gray-dark);
    line-height: 1.7;
    font-size: 1.125rem;
}

/* ===========================
   Bonus Section
   =========================== */
.bonus-section {
    background: linear-gradient(135deg, #fff5f5 0%, #fef7e7 100%);
}

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

.bonus-badge {
    background: var(--color-accent);
    color: var(--color-white);
    padding: var(--space-sm) var(--space-lg);
    border-radius: 25px;
    font-weight: var(--font-weight-semibold);
    display: inline-block;
    margin-bottom: var(--space-lg);
}

.bonus-demo {
    max-width: 600px;
    margin: 0 auto var(--space-xl);
}

.chat-container {
    background: var(--color-white);
    border-radius: var(--border-radius);
    padding: var(--space-lg);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.chat-message {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-md);
    align-items: flex-start;
}

.chat-message.user {
    justify-content: flex-end;
}

.chat-message.user .message-content {
    background: var(--color-saize-green);
    color: var(--color-white);
    border-radius: 20px 20px 5px 20px;
    max-width: 70%;
}

.chat-message.ai .message-content {
    background: var(--color-gray-light);
    color: var(--color-black);
    border-radius: 20px 20px 20px 5px;
    max-width: 85%;
}

.message-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--color-gray-light);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.message-avatar .material-icons {
    font-size: 1.5rem;
    color: var(--color-gray-medium);
}

.message-content {
    padding: var(--space-md) var(--space-md);
}

.message-content ul {
    list-style: none;
    margin: var(--space-sm) 0;
}

.message-content li {
    margin: var(--space-xs) 0;
    padding-left: var(--space-md);
    position: relative;
}

.message-content li::before {
    content: '•';
    color: var(--color-accent);
    position: absolute;
    left: 0;
}

.bonus-features {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-xl);
    flex-wrap: wrap;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-weight: var(--font-weight-medium);
}

.feature-item .material-icons {
    font-size: 1.5rem;
    color: var(--color-accent);
}

/* ===========================
   Final Section
   =========================== */
.final-section {
    background: var(--color-black);
    color: var(--color-white);
    text-align: center;
}

.final-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-md);
}

.final-subtitle {
    font-size: 1.25rem;
    opacity: 0.8;
    margin-bottom: var(--space-xl);
}

.final-features {
    display: flex;
    justify-content: center;
    gap: var(--space-xl);
    margin-top: var(--space-xl);
    flex-wrap: wrap;
}

.final-features .feature-item {
    opacity: 0.8;
}

/* ===========================
   Footer
   =========================== */
.footer {
    background: var(--color-black);
    color: var(--color-white);
    text-align: center;
    padding: var(--space-xl) var(--container-padding);
}

.footer p {
    margin-bottom: var(--space-sm);
    opacity: 0.7;
}

/* ===========================
   Mobile Fixed CTA
   =========================== */
.mobile-cta {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--color-accent);
    padding: var(--space-md) var(--container-padding);
    z-index: var(--z-dropdown);
    display: none;
}

.mobile-cta-button {
    width: 100%;
    background: transparent;
    border: 2px solid var(--color-white);
    color: var(--color-white);
    padding: var(--space-md);
    border-radius: 25px;
    font-weight: var(--font-weight-semibold);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
}

.mobile-cta-button:hover {
    background: var(--color-white);
    color: var(--color-accent);
}

/* ===========================
   Material Icons
   =========================== */
.material-icons {
    font-family: 'Material Icons';
    font-weight: normal;
    font-style: normal;
    font-size: inherit;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
}

/* ===========================
   Responsive Design
   =========================== */
@media (max-width: 768px) {
    /* Header */
    .header-nav {
        display: none;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    /* Hero */
    .hero-container {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .hero-stats {
        justify-content: center;
        gap: var(--space-lg);
    }
    
    .food-grid {
        grid-template-columns: repeat(2, 1fr);
        max-width: 300px;
        gap: var(--space-sm);
    }
    
    /* Author */
    .author-content {
        grid-template-columns: 1fr;
        gap: var(--space-xl);
        text-align: center;
    }
    
    .author-info .section-title {
        text-align: center;
    }
    
    .author-stats {
        justify-content: center;
    }
    
    /* Mobile CTA */
    .mobile-cta {
        display: block;
    }
    
    body {
        padding-bottom: 80px;
    }
    
    /* Spacing adjustments */
    .section-container {
        padding: var(--space-2xl) var(--container-padding);
    }
    
    .problems-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        max-width: 400px;
    }
    
    .problems-grid,
    .method-grid {
        grid-template-columns: 1fr;
        gap: var(--space-lg);
        max-width: 400px;
    }
    
    .bonus-features,
    .final-features {
        flex-direction: column;
        align-items: center;
        gap: var(--space-md);
    }
}

@media (max-width: 480px) {
    .container-padding: var(--space-sm);
    
    .hero-stats {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .stat-item {
        padding: var(--space-md);
        background: rgba(255, 255, 255, 0.9);
        border-radius: var(--border-radius);
    }
    
    .problem-card,
    .method-card {
        padding: var(--space-lg);
    }
    
    .chat-container {
        padding: var(--space-md);
    }
    
    .message-content {
        max-width: 90%;
    }
}

/* ===========================
   Animation Classes
   =========================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
}

.fade-in-up {
    opacity: 0;
    transform: translateY(50px);
}

.fade-in-left {
    opacity: 0;
    transform: translateX(-50px);
}

.fade-in-right {
    opacity: 0;
    transform: translateX(50px);
}

.scale-in {
    opacity: 0;
    transform: scale(0.9);
}

.rotate-in {
    opacity: 0;
    transform: rotate(-5deg) scale(0.9);
}

/* Word wrapper for text splitting */
.word-wrapper {
    display: inline-block;
    overflow: hidden;
    vertical-align: bottom;
}

.word {
    display: inline-block;
    transform-origin: bottom center;
    will-change: transform, opacity;
}

/* Parallax container */
.hero-visual {
    will-change: transform;
}

/* Smooth transform for cards */
.problem-card,
.method-card {
    will-change: transform;
    transform-origin: center center;
}

/* Magnetic button styles */
.cta-primary,
.cta-secondary {
    position: relative;
    transform-origin: center center;
    will-change: transform;
}

/* Removed aggressive grain animation for better UX */

/* Enhanced food grid animation */
.food-grid {
    transform-style: preserve-3d;
    perspective: 1000px;
}

.food-item {
    transform-style: preserve-3d;
    backface-visibility: hidden;
}