/* ============================================
   MealCraft Landing Page - Mobile-First Styles
   ============================================ */

/* CSS Variables */
:root {
    --color-primary: #e85d3b;
    --color-primary-dark: #d04a2a;
    --color-primary-light: #ff7a5c;
    --color-bg: #fffcf9;
    --color-bg-alt: #fff8f4;
    --color-text: #1a1a1a;
    --color-text-light: #666;
    --color-text-muted: #999;
    --color-white: #fff;
    --color-green: #4a9c6d;
    --color-green-light: #e8f5ed;
    --color-border: #eee;

    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.12);

    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 32px;

    --transition: 200ms ease;
    --transition-slow: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-family);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-bg);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-primary-dark);
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1, h2, h3 {
    font-weight: 700;
    line-height: 1.2;
}

h1 {
    font-size: 2rem;
}

h2 {
    font-size: 1.5rem;
}

h3 {
    font-size: 1.125rem;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 12px 28px;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border: none;
    border-radius: var(--radius-xl);
    cursor: pointer;
    transition: all var(--transition);
}

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

.btn-primary:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
    transform: scale(1.02);
}

.btn-large {
    padding: 16px 40px;
    font-size: 1.125rem;
}

/* ============================================
   Navigation
   ============================================ */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(255, 252, 249, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    transition: box-shadow var(--transition);
}

.nav.scrolled {
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 64px;
    padding: 0 20px;
    max-width: 1200px;
    margin: 0 auto;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
}

.nav-logo .logo-img {
    height: 56px;
    width: auto;
}

.nav-logo .wordmark {
    font-family: 'Nunito', var(--font-family);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
}

.nav-links {
    display: none;
    align-items: center;
    gap: 32px;
}

.nav-link {
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-text);
}

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

.nav-btn {
    padding: 10px 24px;
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-xl);
    font-weight: 600;
    font-size: 0.9375rem;
}

.nav-btn:hover {
    background-color: var(--color-primary-dark);
    color: var(--color-white);
}

/* Mobile Nav Toggle */
.nav-toggle {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: 8px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition);
}

.nav-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active span:nth-child(2) {
    opacity: 0;
}

.nav-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Nav Menu */
.nav-mobile {
    display: none;
    flex-direction: column;
    gap: 16px;
    padding: 20px;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
}

.nav-mobile.active {
    display: flex;
}

.nav-mobile .nav-link {
    padding: 8px 0;
}

.nav-mobile .nav-btn {
    text-align: center;
    margin-top: 8px;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
    padding: 100px 0 60px;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.hero .container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.hero-content {
    max-width: 600px;
    margin-bottom: 40px;
}

.hero-title {
    margin-bottom: 16px;
    color: var(--color-text);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-light);
    margin-bottom: 32px;
}

.hero-image {
    width: 100%;
    max-width: 300px;
}

.phone-mockup {
    position: relative;
    border-radius: 32px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transform: perspective(1000px) rotateY(-5deg);
    transition: transform var(--transition-slow);
}

.phone-mockup:hover {
    transform: perspective(1000px) rotateY(0deg);
}

.phone-mockup img {
    width: 100%;
    display: block;
}

/* Hero Carousel */
.hero-carousel {
    position: relative;
    width: 100%;
}

.hero-carousel .carousel-img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    opacity: 0;
    transition: opacity 0.8s ease;
}

.hero-carousel .carousel-img:first-child {
    position: relative;
}

.hero-carousel .carousel-img.active {
    opacity: 1;
}

/* ============================================
   Pain Points Section
   ============================================ */
.pain-points {
    padding: 80px 0;
}

.section-title {
    text-align: center;
    margin-bottom: 48px;
}

.pain-cards {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.pain-card {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    padding: 24px;
    background: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.pain-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.pain-icon {
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-bg-alt);
    border-radius: var(--radius-sm);
}

.pain-icon svg {
    width: 24px;
    height: 24px;
    stroke: var(--color-primary);
}

.pain-card p {
    font-size: 1rem;
    color: var(--color-text);
    font-weight: 500;
}

/* ============================================
   Features Section
   ============================================ */
.features {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.feature-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.feature-card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
}

.feature-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.feature-image {
    aspect-ratio: 4 / 3;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.feature-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
}

.feature-content {
    padding: 24px;
}

.feature-content h3 {
    margin-bottom: 8px;
    color: var(--color-text);
}

.feature-content p {
    color: var(--color-text-light);
    font-size: 0.9375rem;
}

/* ============================================
   How It Works Section
   ============================================ */
.how-it-works {
    padding: 80px 0;
}

.steps {
    display: flex;
    flex-direction: column;
    gap: 48px;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.step-number {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    color: var(--color-white);
    font-size: 1.25rem;
    font-weight: 700;
    border-radius: 50%;
    margin-bottom: 24px;
}

.step-image {
    width: 100%;
    max-width: 280px;
    margin-bottom: 24px;
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-md);
}

.step-image img {
    width: 100%;
    display: block;
}

.step-content h3 {
    margin-bottom: 8px;
    color: var(--color-text);
}

.step-content p {
    color: var(--color-text-light);
    max-width: 300px;
}

/* ============================================
   Feature Tabs Section
   ============================================ */
.feature-tabs {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.tabs {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.tab-buttons {
    display: flex;
    overflow-x: auto;
    border-bottom: 1px solid var(--color-border);
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
}

.tab-buttons::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    flex: 0 0 auto;
    padding: 16px 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-light);
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition);
}

.tab-btn:hover {
    color: var(--color-text);
}

.tab-btn.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

.tab-content {
    position: relative;
}

.tab-panel {
    display: none;
    padding: 24px;
    animation: fadeIn var(--transition-slow);
}

.tab-panel.active {
    display: block;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.tab-image {
    margin-bottom: 24px;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.tab-image img {
    width: 100%;
    display: block;
}

.tab-description h3 {
    margin-bottom: 8px;
}

.tab-description p {
    color: var(--color-text-light);
}

/* ============================================
   Privacy Section
   ============================================ */
.privacy {
    padding: 80px 0;
}

.privacy-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: 40px 24px;
    background: var(--color-green-light);
    border-radius: var(--radius-lg);
}

.privacy-icon {
    width: 64px;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-white);
    border-radius: 50%;
    margin-bottom: 24px;
}

.privacy-icon svg {
    width: 32px;
    height: 32px;
    stroke: var(--color-green);
}

.privacy-text h2 {
    margin-bottom: 12px;
    color: var(--color-text);
}

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

/* ============================================
   Newsletter Section
   ============================================ */
.newsletter {
    padding: 80px 0;
    background: var(--color-bg-alt);
}

.newsletter-content {
    text-align: center;
    max-width: 500px;
    margin: 0 auto;
}

.newsletter-content h2 {
    margin-bottom: 12px;
    color: var(--color-text);
}

.newsletter-content > p {
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.newsletter-form input[type="email"] {
    padding: 14px 18px;
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    background: var(--color-white);
    color: var(--color-text);
    outline: none;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.newsletter-form input[type="email"]:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(232, 93, 59, 0.1);
}

.newsletter-form input[type="email"]::placeholder {
    color: var(--color-text-muted);
}

.newsletter-form button {
    width: 100%;
}

.newsletter-form button:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.newsletter-message {
    margin-top: 16px;
    font-size: 0.9375rem;
    min-height: 24px;
}

.newsletter-message.success {
    color: var(--color-green);
}

.newsletter-message.error {
    color: var(--color-primary);
}

/* ============================================
   Blog Styles
   ============================================ */

/* Blog Header */
.blog-header {
    padding: 120px 0 60px;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
    text-align: center;
}

.blog-header h1 {
    margin-bottom: 16px;
    color: var(--color-text);
}

.blog-header p {
    font-size: 1.125rem;
    color: var(--color-text-light);
}

/* Blog List */
.blog-list {
    padding: 60px 0 80px;
}

.blog-grid {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.blog-card {
    display: block;
    background: var(--color-white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition);
    text-decoration: none;
}

.blog-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-4px);
}

.blog-card-image {
    aspect-ratio: 16 / 9;
    overflow: hidden;
    background: var(--color-bg-alt);
}

.blog-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    object-position: top center;
}

.blog-card-content {
    padding: 24px;
}

.blog-card-date {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    display: block;
    margin-bottom: 8px;
}

.blog-card h2 {
    font-size: 1.25rem;
    margin-bottom: 12px;
    color: var(--color-text);
}

.blog-card p {
    color: var(--color-text-light);
    font-size: 0.9375rem;
    margin-bottom: 16px;
    line-height: 1.6;
}

.blog-card-link {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-primary);
}

/* Blog Article */
.blog-article {
    padding: 100px 0 80px;
}

.article-header {
    max-width: 720px;
    margin: 0 auto 48px;
    text-align: center;
}

.article-back {
    display: inline-block;
    font-size: 0.9375rem;
    color: var(--color-text-light);
    margin-bottom: 24px;
}

.article-back:hover {
    color: var(--color-primary);
}

.article-header h1 {
    font-size: 2rem;
    margin-bottom: 16px;
    color: var(--color-text);
}

.article-meta {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
}

.article-content {
    max-width: 720px;
    margin: 0 auto;
}

.article-lead {
    font-size: 1.25rem;
    color: var(--color-text);
    line-height: 1.7;
    margin-bottom: 32px;
}

.article-content h2 {
    font-size: 1.5rem;
    margin-top: 48px;
    margin-bottom: 16px;
    color: var(--color-text);
}

.article-content h3 {
    font-size: 1.25rem;
    margin-top: 32px;
    margin-bottom: 12px;
    color: var(--color-text);
}

.article-content p {
    color: var(--color-text-light);
    line-height: 1.8;
    margin-bottom: 20px;
}

.article-content ul {
    margin: 0 0 20px 24px;
    color: var(--color-text-light);
    line-height: 1.8;
}

.article-content li {
    margin-bottom: 8px;
}

.article-content a {
    color: var(--color-primary);
    text-decoration: underline;
}

.article-content a:hover {
    color: var(--color-primary-dark);
}

.article-footer {
    max-width: 720px;
    margin: 48px auto 0;
    text-align: center;
    padding-top: 48px;
    border-top: 1px solid var(--color-border);
}

/* ============================================
   Footer
   ============================================ */
.footer {
    padding: 40px 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 24px;
}

.footer-logo .logo-img {
    height: 128px;
}

.footer-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 24px;
}

.footer-links a {
    font-size: 0.9375rem;
    color: var(--color-text-light);
}

.footer-links a:hover {
    color: var(--color-primary);
}

.footer-contact {
    font-size: 0.9375rem;
    color: var(--color-text-light);
}

.footer-contact a {
    color: var(--color-primary);
    font-weight: 500;
}

.footer-contact a:hover {
    color: var(--color-primary-dark);
}

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* ============================================
   Scroll Animations
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   Tablet Breakpoint (768px+)
   ============================================ */
@media (min-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1.25rem;
    }

    .container {
        padding: 0 40px;
    }

    /* Navigation */
    .nav-links {
        display: flex;
    }

    .nav-toggle {
        display: none;
    }

    .nav-mobile {
        display: none !important;
    }

    /* Hero */
    .hero {
        padding: 120px 0 80px;
    }

    .hero-title {
        font-size: 2.75rem;
    }

    .hero-subtitle {
        font-size: 1.25rem;
    }

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

    /* Pain Points */
    .pain-cards {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .pain-card {
        flex: 1;
        min-width: 280px;
    }

    /* Features */
    .feature-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    /* How It Works */
    .steps {
        flex-direction: row;
        justify-content: space-between;
        gap: 24px;
    }

    .step {
        flex: 1;
    }

    .step-image {
        max-width: 220px;
    }

    /* Tabs */
    .tab-btn {
        flex: 1;
        padding: 20px 24px;
        font-size: 0.9375rem;
    }

    .tab-panel {
        display: none;
        flex-direction: row;
        align-items: center;
        gap: 40px;
        padding: 40px;
    }

    .tab-panel.active {
        display: flex;
    }

    .tab-image {
        flex: 1;
        max-width: 300px;
        margin-bottom: 0;
    }

    .tab-description {
        flex: 1;
    }

    /* Privacy */
    .privacy-content {
        flex-direction: row;
        text-align: left;
        gap: 32px;
        padding: 48px;
    }

    .privacy-icon {
        flex-shrink: 0;
        margin-bottom: 0;
    }

    /* Newsletter */
    .newsletter-form {
        flex-direction: row;
        max-width: 440px;
        margin: 0 auto;
    }

    .newsletter-form input[type="email"] {
        flex: 1;
    }

    .newsletter-form button {
        width: auto;
        flex-shrink: 0;
    }

    /* Blog */
    .blog-grid {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 32px;
    }

    .article-header h1 {
        font-size: 2.5rem;
    }

    /* Footer */
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
        text-align: left;
    }
}

/* ============================================
   Desktop Breakpoint (1024px+)
   ============================================ */
@media (min-width: 1024px) {
    h1 {
        font-size: 3rem;
    }

    h2 {
        font-size: 2.25rem;
    }

    /* Hero */
    .hero .container {
        flex-direction: row;
        text-align: left;
        gap: 60px;
    }

    .hero-content {
        flex: 1;
        margin-bottom: 0;
    }

    .hero-image {
        flex: 0 0 auto;
        max-width: 380px;
    }

    .hero-title {
        font-size: 3.25rem;
    }

    .hero-subtitle {
        font-size: 1.375rem;
    }

    /* Features */
    .features {
        padding: 100px 0;
    }

    .feature-grid {
        gap: 40px;
    }

    .feature-content {
        padding: 32px;
    }

    /* How It Works */
    .how-it-works {
        padding: 100px 0;
    }

    .step-image {
        max-width: 280px;
    }

    /* Tabs */
    .feature-tabs {
        padding: 100px 0;
    }

    .tab-panel {
        padding: 48px;
    }

    .tab-image {
        max-width: 380px;
    }
}

/* ============================================
   Large Desktop (1280px+)
   ============================================ */
@media (min-width: 1280px) {
    .hero-image {
        max-width: 420px;
    }

    .hero-title {
        font-size: 3.5rem;
    }
}