/* ============================================
   Beekeeping Diary Website - Main Styles
   Mobile-First Responsive Design
   ============================================ */

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

:root {
    /* Color System */
    --primary-50: #FFFBEB;
    --primary-100: #FEF3C7;
    --primary-200: #FDE68A;
    --primary-300: #FCD34D;
    --primary-400: #FBBF24;
    --primary-500: #F59E0B;
    --primary-600: #D97706;
    --primary-700: #B45309;
    --primary-800: #92400E;
    --primary-900: #78350F;
    
    --secondary-50: #FFF7ED;
    --secondary-100: #FFEDD5;
    --secondary-200: #FED7AA;
    --secondary-300: #FDBA74;
    --secondary-400: #FB923C;
    --secondary-500: #F97316;
    --secondary-600: #EA580C;
    --secondary-700: #C2410C;
    --secondary-800: #9A3412;
    --secondary-900: #7C2D12;
    
    --gray-50: #F9FAFB;
    --gray-100: #F3F4F6;
    --gray-200: #E5E7EB;
    --gray-300: #D1D5DB;
    --gray-400: #9CA3AF;
    --gray-500: #6B7280;
    --gray-600: #4B5563;
    --gray-700: #374151;
    --gray-800: #1F2937;
    --gray-900: #111827;
    
    --white: #FFFFFF;
    --black: #000000;
    
    /* Typography */
    --font-display: 'Playfair Display', serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    
    /* Spacing - Mobile First */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-20: 5rem;
    --space-24: 6rem;
    --space-32: 8rem;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);
    --shadow-inner: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
    
    /* Border Radius */
    --radius-sm: 0.125rem;
    --radius: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
    --radius-2xl: 1rem;
    --radius-3xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition: 300ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Z-Index */
    --z-dropdown: 1000;
    --z-sticky: 1020;
    --z-fixed: 1030;
    --z-modal: 1040;
    --z-popover: 1050;
    --z-tooltip: 1060;
}

/* Base Styles */
html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-weight: 400;
    line-height: 1.7;
    color: var(--gray-800);
    background: linear-gradient(135deg, var(--primary-50) 0%, var(--white) 25%, var(--secondary-50) 50%, var(--white) 75%, var(--primary-50) 100%);
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    overflow-x: hidden;
}

/* Loading Animation */
.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity var(--transition-slow), visibility var(--transition-slow);
}

.page-loader.loaded {
    opacity: 0;
    visibility: hidden;
}

.loader-bee {
    font-size: clamp(3rem, 10vw, 4rem);
    animation: loaderSpin 2s ease-in-out infinite;
}

@keyframes loaderSpin {
    0%, 100% { transform: rotate(0deg) scale(1); }
    25% { transform: rotate(-10deg) scale(1.1); }
    50% { transform: rotate(0deg) scale(0.9); }
    75% { transform: rotate(10deg) scale(1.1); }
}

/* Container - Mobile First */
.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 640px) {
    .container { padding: 0 var(--space-6); }
}

@media (min-width: 1024px) {
    .container { padding: 0 var(--space-8); }
}

/* Hero Section - Mobile Optimized */
.hero {
    position: relative;
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--secondary-600) 50%, var(--primary-700) 100%);
    color: var(--white);
    min-height: 100vh;
    min-height: 100dvh; /* Dynamic viewport height for mobile */
    display: flex;
    align-items: center;
    overflow: hidden;
    padding: var(--space-16) 0;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 25% 25%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 75% 75%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 50% 50%, rgba(255, 255, 255, 0.05) 0%, transparent 70%);
    animation: heroFloat 20s ease-in-out infinite;
}

@keyframes heroFloat {
    0%, 100% { transform: translateY(0) scale(1); }
    50% { transform: translateY(-20px) scale(1.02); }
}

.hero-content {
    position: relative;
    z-index: 2;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-8) 0;
}

@media (min-width: 768px) {
    .hero-content {
        padding: var(--space-20) 0;
    }
}

.hero-logo {
    font-size: clamp(3.5rem, 12vw, 6rem);
    margin-bottom: var(--space-4);
    display: inline-block;
    animation: beeBuzz 4s ease-in-out infinite;
    filter: drop-shadow(0 10px 20px rgba(0, 0, 0, 0.3));
}

@media (min-width: 768px) {
    .hero-logo {
        margin-bottom: var(--space-6);
    }
}

@keyframes beeBuzz {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-10px) rotate(-2deg); }
    50% { transform: translateY(-5px) rotate(1deg); }
    75% { transform: translateY(-15px) rotate(-1deg); }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 8vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-4);
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    letter-spacing: -0.02em;
}

@media (min-width: 768px) {
    .hero-title {
        margin-bottom: var(--space-6);
    }
}

.hero-subtitle {
    font-size: clamp(1rem, 4vw, 1.5rem);
    font-weight: 400;
    margin-bottom: var(--space-6);
    opacity: 0.95;
    line-height: 1.5;
}

@media (min-width: 768px) {
    .hero-subtitle {
        margin-bottom: var(--space-8);
    }
}

.hero-description {
    font-size: clamp(0.938rem, 2.5vw, 1.125rem);
    margin-bottom: var(--space-8);
    opacity: 0.9;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .hero-description {
        margin-bottom: var(--space-12);
        padding: 0;
    }
}

.hero-cta {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    padding: 0 var(--space-4);
}

@media (min-width: 640px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: var(--space-6);
    }
}

/* Primary CTA Button - Mobile Optimized */
.btn-primary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    color: var(--white);
    padding: var(--space-4) var(--space-6);
    border-radius: var(--radius-2xl);
    text-decoration: none;
    font-weight: 600;
    font-size: clamp(1rem, 3vw, 1.125rem);
    transition: var(--transition);
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.1);
    min-height: 56px; /* Minimum touch target size */
    width: 100%;
    max-width: 100%;
}

@media (min-width: 640px) {
    .btn-primary {
        width: auto;
        max-width: none;
        padding: var(--space-4) var(--space-8);
    }
}

.btn-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.1), transparent);
    transition: var(--transition);
}

.btn-primary:active {
    transform: scale(0.98);
}

@media (hover: hover) {
    .btn-primary:hover {
        background: linear-gradient(135deg, var(--gray-800) 0%, var(--gray-700) 100%);
        transform: translateY(-2px) scale(1.02);
        box-shadow: var(--shadow-2xl);
    }

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

.btn-primary i {
    font-size: 1.5rem;
    transition: var(--transition);
}

/* Secondary CTA Button - Mobile Optimized */
.btn-secondary {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-xl);
    text-decoration: none;
    font-weight: 500;
    font-size: clamp(0.938rem, 2.5vw, 1rem);
    transition: var(--transition);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    min-height: 48px; /* Minimum touch target size */
    width: 100%;
}

@media (min-width: 640px) {
    .btn-secondary {
        width: auto;
    }
}

.btn-secondary:active {
    transform: scale(0.98);
}

@media (hover: hover) {
    .btn-secondary:hover {
        background: rgba(255, 255, 255, 0.2);
        transform: translateY(-2px);
        box-shadow: var(--shadow-lg);
    }
}

/* Language Switcher - Mobile Optimized */
.language-switcher {
    position: fixed;
    top: var(--space-4);
    right: var(--space-4);
    z-index: var(--z-fixed);
    display: flex;
    gap: var(--space-2);
}

@media (min-width: 768px) {
    .language-switcher {
        top: var(--space-6);
        right: var(--space-6);
    }
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    background: rgba(255, 255, 255, 0.9);
    border: 1px solid var(--gray-200);
    border-radius: var(--radius-lg);
    text-decoration: none;
    color: var(--gray-700);
    font-size: clamp(0.813rem, 2vw, 0.875rem);
    font-weight: 500;
    transition: var(--transition);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    min-height: 44px; /* Minimum touch target size */
}

@media (min-width: 768px) {
    .lang-btn {
        padding: var(--space-2) var(--space-4);
    }
}

.lang-btn:active {
    transform: scale(0.95);
}

@media (hover: hover) {
    .lang-btn:hover {
        background: var(--white);
        border-color: var(--primary-300);
        color: var(--primary-600);
        transform: translateY(-1px);
        box-shadow: var(--shadow-md);
    }
}

.lang-btn.active {
    background: var(--primary-500);
    border-color: var(--primary-500);
    color: var(--white);
}

@media (hover: hover) {
    .lang-btn.active:hover {
        background: var(--primary-600);
    }
}

/* Scroll Indicator - Hidden on Mobile */
.scroll-indicator {
    position: absolute;
    bottom: var(--space-8);
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
    color: rgba(255, 255, 255, 0.7);
    display: none;
}

@media (min-width: 768px) {
    .scroll-indicator {
        display: block;
    }
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% { transform: translateX(-50%) translateY(0); }
    40% { transform: translateX(-50%) translateY(-10px); }
    60% { transform: translateX(-50%) translateY(-5px); }
}

/* Main Content */
.main-content {
    position: relative;
    z-index: 1;
}

/* About Section - Mobile Optimized */
.about-section {
    background: var(--white);
    margin: -60px var(--space-4) var(--space-12) var(--space-4);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
    padding: var(--space-12) 0;
}

@media (min-width: 768px) {
    .about-section {
        margin: -80px var(--space-6) var(--space-20) var(--space-6);
        border-radius: var(--radius-3xl);
        padding: var(--space-20) 0;
    }
}

.about-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500), var(--primary-500));
}

@media (min-width: 768px) {
    .about-section::before {
        height: 6px;
    }
}

.about-content {
    max-width: 1000px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .about-content {
        padding: 0 var(--space-8);
    }
}

.section-header {
    text-align: center;
    margin-bottom: var(--space-10);
}

@media (min-width: 768px) {
    .section-header {
        margin-bottom: var(--space-16);
    }
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(1.75rem, 6vw, 3rem);
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: var(--space-3);
    line-height: 1.2;
}

@media (min-width: 768px) {
    .section-title {
        margin-bottom: var(--space-4);
    }
}

.section-subtitle {
    font-size: clamp(0.938rem, 3vw, 1.25rem);
    color: var(--gray-600);
    max-width: 600px;
    margin: 0 auto;
    line-height: 1.6;
    padding: 0 var(--space-2);
}

.lead-text {
    font-size: clamp(1.063rem, 3vw, 1.375rem);
    line-height: 1.7;
    color: var(--gray-800);
    text-align: center;
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    margin-bottom: var(--space-10);
    border: 1px solid var(--primary-200);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .lead-text {
        padding: var(--space-10);
        border-radius: var(--radius-2xl);
        margin-bottom: var(--space-16);
    }
}

.lead-text::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
}

@media (min-width: 768px) {
    .lead-text::before {
        height: 4px;
    }
}

.lead-text strong {
    color: var(--primary-600);
    font-weight: 700;
}

/* Feature Grid - Mobile Optimized */
.feature-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-6);
    margin: var(--space-10) 0;
}

@media (min-width: 640px) {
    .feature-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (min-width: 1024px) {
    .feature-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: var(--space-8);
        margin: var(--space-16) 0;
    }
}

.feature-card {
    background: var(--white);
    padding: var(--space-6);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .feature-card {
        padding: var(--space-10);
        border-radius: var(--radius-2xl);
    }
}

.feature-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500));
    transform: scaleX(0);
    transition: var(--transition);
}

@media (min-width: 768px) {
    .feature-card::before {
        height: 4px;
    }
}

.feature-card:active {
    transform: scale(0.98);
}

@media (hover: hover) {
    .feature-card:hover {
        transform: translateY(-8px) scale(1.01);
        box-shadow: var(--shadow-2xl);
        border-color: var(--primary-300);
    }

    .feature-card:hover::before {
        transform: scaleX(1);
    }
}

.feature-icon {
    font-size: clamp(2.5rem, 8vw, 3.5rem);
    margin-bottom: var(--space-4);
    display: inline-block;
    position: relative;
    z-index: 2;
}

@media (min-width: 768px) {
    .feature-icon {
        margin-bottom: var(--space-6);
        animation: iconFloat 6s ease-in-out infinite;
    }
}

@keyframes iconFloat {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    25% { transform: translateY(-6px) rotate(1deg); }
    50% { transform: translateY(-3px) rotate(-0.5deg); }
    75% { transform: translateY(-9px) rotate(0.5deg); }
}

.feature-title {
    font-family: var(--font-display);
    font-size: clamp(1.25rem, 4vw, 1.5rem);
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-3);
    position: relative;
    z-index: 2;
}

@media (min-width: 768px) {
    .feature-title {
        margin-bottom: var(--space-4);
    }
}

.feature-description {
    color: var(--gray-600);
    line-height: 1.7;
    position: relative;
    z-index: 2;
    font-size: clamp(0.938rem, 2.5vw, 1rem);
}

/* Benefits Section - Mobile Optimized */
.benefits-section {
    background: linear-gradient(135deg, var(--primary-50), var(--secondary-50));
    padding: var(--space-12) var(--space-4);
    margin: var(--space-12) 0;
}

@media (min-width: 768px) {
    .benefits-section {
        padding: var(--space-20) var(--space-6);
        margin: var(--space-20) 0;
    }
}

.benefits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
    max-width: 1200px;
    margin: 0 auto;
}

@media (min-width: 640px) {
    .benefits-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-6);
    }
}

@media (min-width: 1024px) {
    .benefits-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

.benefit-item {
    display: flex;
    align-items: flex-start;
    gap: var(--space-3);
    padding: var(--space-4);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    transition: var(--transition);
}

@media (min-width: 768px) {
    .benefit-item {
        gap: var(--space-4);
        padding: var(--space-6);
        border-radius: var(--radius-xl);
    }
}

.benefit-item:active {
    transform: scale(0.98);
}

@media (hover: hover) {
    .benefit-item:hover {
        transform: translateY(-4px);
        box-shadow: var(--shadow-lg);
    }
}

.benefit-icon {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    color: var(--white);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
}

@media (min-width: 768px) {
    .benefit-icon {
        width: 48px;
        height: 48px;
        border-radius: var(--radius-xl);
        font-size: 1.25rem;
    }
}

.benefit-content h4 {
    font-weight: 600;
    color: var(--gray-900);
    margin-bottom: var(--space-1);
    font-size: clamp(0.938rem, 3vw, 1rem);
}

@media (min-width: 768px) {
    .benefit-content h4 {
        margin-bottom: var(--space-2);
    }
}

.benefit-content p {
    color: var(--gray-600);
    font-size: clamp(0.813rem, 2.5vw, 0.875rem);
    line-height: 1.6;
}

/* Download Section - Mobile Optimized */
.download-section {
    background: linear-gradient(135deg, var(--white) 0%, var(--primary-50) 100%);
    padding: var(--space-12) 0;
    margin: var(--space-12) var(--space-4);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--primary-200);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .download-section {
        padding: var(--space-20) 0;
        margin: var(--space-20) var(--space-6);
        border-radius: var(--radius-3xl);
        box-shadow: var(--shadow-xl);
    }
}

.download-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-500), var(--secondary-500), var(--primary-500));
}

@media (min-width: 768px) {
    .download-section::before {
        height: 6px;
    }
}

.download-content {
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .download-content {
        padding: 0 var(--space-8);
    }
}

.download-buttons {
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: var(--space-4);
    margin: var(--space-8) 0;
    padding: 0 var(--space-2);
}

@media (min-width: 640px) {
    .download-buttons {
        flex-direction: row;
        justify-content: center;
        align-items: center;
        gap: var(--space-6);
        margin: var(--space-12) 0;
    }
}

.app-info {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-3);
    margin-top: var(--space-6);
    font-size: clamp(0.813rem, 2.5vw, 0.875rem);
    color: var(--gray-600);
}

@media (min-width: 768px) {
    .app-info {
        gap: var(--space-6);
        margin-top: var(--space-8);
    }
}

.app-info-item {
    display: flex;
    align-items: center;
    gap: var(--space-2);
}

/* QR Code Section - Mobile Optimized */
.qr-section {
    background: var(--primary-50);
    padding: var(--space-12) 0;
    text-align: center;
    margin: var(--space-12) var(--space-4);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--primary-200);
}

@media (min-width: 768px) {
    .qr-section {
        padding: var(--space-16) 0;
        margin: var(--space-20) var(--space-6);
        border-radius: var(--radius-3xl);
    }
}

.qr-container {
    display: inline-block;
    background: var(--white);
    padding: var(--space-4);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    margin: var(--space-6) 0;
    position: relative;
}

@media (min-width: 768px) {
    .qr-container {
        padding: var(--space-8);
        border-radius: var(--radius-2xl);
        box-shadow: var(--shadow-lg);
        margin: var(--space-8) 0;
    }
}

.qr-container::before {
    content: '';
    position: absolute;
    inset: -2px;
    background: linear-gradient(135deg, var(--primary-500), var(--secondary-500));
    border-radius: var(--radius-xl);
    z-index: -1;
}

@media (min-width: 768px) {
    .qr-container::before {
        border-radius: var(--radius-2xl);
    }
}

#qrcode {
    border-radius: var(--radius-lg);
    max-width: 100%;
    height: auto;
}

#qrcode canvas {
    max-width: 100% !important;
    height: auto !important;
}

.qr-text {
    color: var(--gray-600);
    margin-top: var(--space-4);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
    padding: 0 var(--space-4);
    font-size: clamp(0.938rem, 2.5vw, 1rem);
}

@media (min-width: 768px) {
    .qr-text {
        margin-top: var(--space-6);
    }
}

/* Social Section - Mobile Optimized */
.social-section {
    background: var(--white);
    padding: var(--space-12) 0;
    text-align: center;
    margin: var(--space-12) var(--space-4);
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-200);
}

@media (min-width: 768px) {
    .social-section {
        padding: var(--space-16) 0;
        margin: var(--space-20) var(--space-6);
        border-radius: var(--radius-3xl);
        box-shadow: var(--shadow-lg);
    }
}

.social-buttons {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: var(--space-3);
    margin-top: var(--space-6);
    padding: 0 var(--space-4);
}

@media (min-width: 768px) {
    .social-buttons {
        gap: var(--space-4);
        margin-top: var(--space-8);
    }
}

.social-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 52px;
    height: 52px;
    border-radius: var(--radius-full);
    color: var(--white);
    font-size: 1.25rem;
    text-decoration: none;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

@media (min-width: 768px) {
    .social-btn {
        width: 64px;
        height: 64px;
        font-size: 1.5rem;
    }
}

.social-btn::before {
    content: '';
    position: absolute;
    inset: 0;
    background: inherit;
    opacity: 0;
    transition: var(--transition);
}

.social-btn:active {
    transform: scale(0.9);
}

@media (hover: hover) {
    .social-btn:hover {
        transform: translateY(-4px) scale(1.1);
        box-shadow: var(--shadow-xl);
    }

    .social-btn:hover::before {
        opacity: 0.1;
    }
}

.social-btn.facebook { background: linear-gradient(135deg, #1877F2, #42A5F5); }
.social-btn.instagram { background: linear-gradient(135deg, #E4405F, #FCCC63, #833AB4); }
.social-btn.threads { background: linear-gradient(135deg, #000, #333); }
.social-btn.twitter { background: linear-gradient(135deg, #1DA1F2, #0084FF); }
.social-btn.linkedin { background: linear-gradient(135deg, #0A66C2, #004182); }
.social-btn.whatsapp { background: linear-gradient(135deg, #25D366, #128C7E); }

/* Footer - Mobile Optimized */
.footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--space-12) 0 var(--space-8);
    margin-top: var(--space-20);
}

@media (min-width: 768px) {
    .footer {
        padding: var(--space-20) 0 var(--space-12);
        margin-top: var(--space-32);
    }
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
    margin-bottom: var(--space-8);
}

@media (min-width: 640px) {
    .footer-content {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--space-10);
    }
}

@media (min-width: 1024px) {
    .footer-content {
        grid-template-columns: repeat(4, 1fr);
        gap: var(--space-12);
        margin-bottom: var(--space-12);
    }
}

.footer-section h3 {
    color: var(--primary-400);
    font-weight: 600;
    margin-bottom: var(--space-3);
    font-size: clamp(1rem, 3vw, 1.125rem);
}

@media (min-width: 768px) {
    .footer-section h3 {
        margin-bottom: var(--space-4);
    }
}

.footer-section p {
    color: var(--gray-400);
    line-height: 1.6;
    margin-bottom: var(--space-3);
    font-size: clamp(0.875rem, 2.5vw, 1rem);
}

@media (min-width: 768px) {
    .footer-section p {
        margin-bottom: var(--space-4);
    }
}

.footer-section a {
    color: var(--gray-400);
    text-decoration: none;
    display: block;
    padding: var(--space-1) 0;
    transition: var(--transition);
    font-size: clamp(0.875rem, 2.5vw, 1rem);
}

@media (hover: hover) {
    .footer-section a:hover {
        color: var(--primary-400);
        transform: translateX(4px);
    }
}

.footer-bottom {
    border-top: 1px solid var(--gray-800);
    padding-top: var(--space-6);
    text-align: center;
    color: var(--gray-500);
}

@media (min-width: 768px) {
    .footer-bottom {
        padding-top: var(--space-8);
    }
}

.footer-bottom p {
    margin-bottom: var(--space-2);
    font-size: clamp(0.813rem, 2.5vw, 0.875rem);
}

/* Accessibility - Touch Targets */
a, button, .btn-primary, .btn-secondary, .lang-btn, .social-btn {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
    touch-action: manipulation;
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus states */
.btn-primary:focus-visible,
.btn-secondary:focus-visible,
.social-btn:focus-visible,
.lang-btn:focus-visible {
    outline: 3px solid var(--primary-500);
    outline-offset: 3px;
}

/* Scroll animations */
.scroll-reveal {
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-slow);
}

@media (min-width: 768px) {
    .scroll-reveal {
        transform: translateY(30px);
    }
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}

/* Custom scrollbar */
::-webkit-scrollbar {
    width: 6px;
}

@media (min-width: 768px) {
    ::-webkit-scrollbar {
        width: 8px;
    }
}

::-webkit-scrollbar-track {
    background: var(--gray-100);
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(var(--primary-500), var(--secondary-500));
    border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(var(--primary-600), var(--secondary-600));
}

/* Safe Area Insets for Mobile */
@supports (padding: max(0px)) {
    .container,
    .hero-content,
    .about-content,
    .download-content,
    .footer .container {
        padding-left: max(var(--space-4), env(safe-area-inset-left));
        padding-right: max(var(--space-4), env(safe-area-inset-right));
    }

    @media (min-width: 768px) {
        .container,
        .hero-content,
        .about-content,
        .download-content,
        .footer .container {
            padding-left: max(var(--space-8), env(safe-area-inset-left));
            padding-right: max(var(--space-8), env(safe-area-inset-right));
        }
    }
}