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

:root {
    --line-green: #00B900;
    --line-green-dark: #00A000;
    --line-green-light: #00D000;
    --line-bg: #F5F5F5;
    --text-dark: #1A1A1A;
    --text-light: #5A5A5A;
    --white: #FFFFFF;
    --shadow: rgba(0, 185, 0, 0.08);
    --shadow-hover: rgba(0, 185, 0, 0.15);
    --border-radius: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
    font-family: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.7;
    color: var(--text-dark);
    background-color: var(--line-bg);
    min-height: 100vh;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Language Switch */
.language-switch {
    position: absolute;
    top: 1rem;
    right: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.9rem;
    z-index: 100;
}

.lang-button {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-light);
    transition: var(--transition);
}

.lang-button:hover {
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.lang-button.active {
    background: rgba(255, 255, 255, 0.2);
    color: var(--white);
    font-weight: 600;
}

.lang-separator {
    color: rgba(255, 255, 255, 0.5);
}

/* Header */
header {
    position: relative;
    background: url('landingpage_background.png') center/cover no-repeat;
    color: var(--white);
    text-align: center;
    padding: 5rem 1rem 4rem;
    box-shadow: 0 4px 30px var(--shadow);
    overflow: hidden;
    min-height: 450px;
    display: flex;
    align-items: center;
    justify-content: center;
}

header::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.08) 0%, transparent 70%);
    animation: pulse 6s ease-in-out infinite;
}

header::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 120px;
    background: linear-gradient(to top, rgba(0,0,0,0.1) 0%, transparent 100%);
    pointer-events: none;
}

@keyframes pulse {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 0.5; }
    50% { transform: scale(1.2) rotate(180deg); opacity: 0.3; }
}

.header-content {
    position: relative;
    z-index: 1;
    padding: 2rem;
    max-width: 600px;
    margin: 0 auto;
}

.logo {
    display: inline-block;
    width: 120px;
    height: 120px;
    position: relative;
    margin: 0 auto 2rem;
    transition: var(--transition);
}

.logo::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 140px;
    height: 140px;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 70%);
    border-radius: 50%;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease, transform 0.3s ease;
}

.logo:hover::before {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1.2);
}

.logo:hover {
    transform: translateY(-5px) scale(1.05);
}

.logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
    transition: var(--transition);
}

.logo:hover img {
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.18);
}

header h1 {
    font-size: 3.5rem;
    margin-bottom: 0.8rem;
    font-weight: 800;
    letter-spacing: -1.5px;
    text-shadow: 2px 2px 8px rgba(0, 0, 0, 0.8);
    animation: fadeInUp 0.8s ease-out;
}

header p {
    font-size: 1.3rem;
    opacity: 0.95;
    font-weight: 500;
    text-shadow: 1px 1px 4px rgba(0, 0, 0, 0.8);
    animation: fadeInUp 0.8s ease-out 0.2s;
    animation-fill-mode: both;
}

.concept-message {
    margin-top: 2rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.2rem;
    font-family: 'Inter', 'Noto Sans JP', sans-serif;
    font-size: 1.8rem;
    letter-spacing: 0.02em;
    animation: fadeInUp 0.8s ease-out 0.6s;
    animation-fill-mode: both;
    position: relative;
    padding: 0.5rem 1rem;
}

.concept-text {
    font-weight: 400;
    color: rgba(255, 255, 255, 0.85);
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.4);
    transition: all 0.3s ease;
    font-size: 1.7rem;
}

.concept-highlight {
    font-weight: 700;
    background: linear-gradient(135deg, #ffffff 0%, #f0e6ff 50%, #e6f0ff 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-fill-color: transparent;
    font-size: 1.9rem;
    transition: all 0.3s ease;
    position: relative;
    filter: drop-shadow(0 0 10px rgba(255, 255, 255, 0.3));
}


/* Modern hover effect */
.concept-message:hover .concept-text {
    color: #ffffff;
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.5);
}

.concept-message:hover .concept-highlight {
    transform: scale(1.05);
    text-shadow: 0 0 15px rgba(255, 255, 255, 0.7);
}

/* Responsive styles for concept message */
@media (max-width: 768px) {
    .concept-message {
        font-size: 1.3rem;
        margin-top: 1.5rem;
        flex-wrap: nowrap;
        text-align: center;
        padding: 0.5rem 0.5rem;
        gap: 0.1rem;
    }
    
    .concept-text {
        font-size: 1.2rem;
    }
    
    .concept-highlight {
        font-size: 1.3rem;
        display: inline;
        width: auto;
        margin: 0;
    }
}

@keyframes shimmer {
    0%, 100% {
        opacity: 0.5;
        transform: translateX(-50%) scaleX(0.5);
    }
    50% {
        opacity: 1;
        transform: translateX(-50%) scaleX(1);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Main Content */
main {
    max-width: 1000px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

section {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 3rem;
    margin-bottom: 2.5rem;
    box-shadow: 0 4px 20px var(--shadow);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 5px;
    height: 100%;
    background: var(--line-green);
    opacity: 0;
    transition: opacity 0.3s ease;
}

section:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 40px var(--shadow-hover);
}

section:hover::before {
    opacity: 1;
}

/* Icons in Headers */
h2 i {
    margin-right: 0.5rem;
    font-size: 1.4rem;
    vertical-align: middle;
}


/* Hero Section */
.hero {
    text-align: center;
    background: linear-gradient(135deg, rgba(0, 185, 0, 0.05) 0%, rgba(0, 185, 0, 0.02) 100%);
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    color: var(--line-green-dark);
    font-weight: 700;
}

.hero p {
    font-size: 1.2rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

/* CTA Button */
.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    background: var(--line-green);
    color: var(--white);
    padding: 1.2rem 3rem;
    border-radius: 100px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    margin-top: 1rem;
    transition: var(--transition);
    box-shadow: 0 4px 20px var(--shadow);
    position: relative;
    overflow: hidden;
}

.cta-button i {
    font-size: 1.5rem;
}

.cta-button::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.cta-button:hover {
    background: var(--line-green-dark);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px var(--shadow-hover);
}

.cta-button:hover::before {
    width: 300px;
    height: 300px;
}

/* Add Friend Section */
.add-friend-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    margin-top: 2rem;
    position: relative;
}

.add-friend-item {
    display: flex;
    align-items: center;
    justify-content: center;
}

/* LINE公式友だち追加ボタン */
.add-friend-item img[alt="友だち追加"],
.add-friend-item img[alt="เพิ่มเพื่อน"] {
    height: 36px;
    max-width: 100%;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.add-friend-item img[alt="友だち追加"]:hover,
.add-friend-item img[alt="เพิ่มเพื่อน"]:hover {
    opacity: 0.9;
}

.or-divider {
    position: relative;
    color: #666;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
}

.or-divider::before,
.or-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: #ddd;
}

.or-divider::before {
    margin-right: 1rem;
}

.or-divider::after {
    margin-left: 1rem;
}

.or-divider span {
    position: relative;
    z-index: 1;
}

@media (max-width: 768px) {
    .add-friend-section {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .or-divider {
        width: 200px;
        margin: 0 auto;
        display: flex;
        align-items: center;
        justify-content: center;
    }
}

.qr-code-wrapper {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
}

.qr-code-label {
    text-align: center;
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.qr-code-container {
    display: inline-block;
    padding: 0;
    background: white;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
    overflow: hidden;
}

.qr-code-container:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.qr-code {
    width: 200px;
    height: 200px;
    display: block;
    margin: 0;
    padding: 0;
    border: 0;
}

.social-follow {
    margin-top: 2rem;
    text-align: center;
}

.x-follow-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: #000;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    font-size: 0.95rem;
}

.x-follow-button:hover {
    background: #333;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.x-follow-button i {
    font-size: 1.1rem;
}

.instagram-follow-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: linear-gradient(45deg, #f09433 0%, #e6683c 25%, #dc2743 50%, #cc2366 75%, #bc1888 100%);
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
    font-size: 0.95rem;
    margin-left: 1rem;
}

.instagram-follow-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(224, 103, 60, 0.3);
    filter: brightness(1.1);
}

.x-icon,
.instagram-icon {
    width: 20px;
    height: 20px;
    fill: currentColor;
    vertical-align: middle;
}

@media (max-width: 768px) {
    .qr-code {
        width: 150px;
        height: 150px;
    }
    
    .qr-code-label {
        font-size: 0.85rem;
    }
    
    .social-follow {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
        align-items: center;
    }
    
    .x-follow-button,
    .instagram-follow-button {
        margin: 0;
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }
}

/* Features Table */
.features-table {
    overflow-x: auto;
    margin-top: 2rem;
}

.features-table table {
    width: 100%;
    border-collapse: collapse;
    border: 1px solid #e0e0e0;
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.features-table th {
    background: var(--line-green);
    color: var(--white);
    padding: 1.2rem 1rem;
    text-align: left;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.features-table th:first-child {
    width: 50px;
    min-width: 50px;
    padding: 1.2rem 0.5rem;
}

.features-table td {
    padding: 1.2rem 1rem;
    border-bottom: 1px solid #f0f0f0;
    vertical-align: top;
    background: var(--white);
}

.features-table tr:last-child td {
    border-bottom: none;
}

.features-table tr:hover td {
    background: #f8f8f8;
}

.icon-cell {
    text-align: center;
    font-size: 1.8rem;
    width: 50px;
    min-width: 50px;
    padding: 0.8rem 0.5rem;
}

.feature-name {
    white-space: nowrap;
    color: var(--line-green-dark);
    min-width: 120px;
}

.feature-desc {
    color: var(--text-dark);
    line-height: 1.6;
}

.use-case {
    color: #666;
    font-size: 0.9rem;
    line-height: 1.8;
}

.use-case strong,
.feature-desc strong {
    color: var(--line-green);
    font-weight: 600;
}

/* Highlight spans in features table */
.features-table .highlight {
    background: rgba(0, 185, 0, 0.1);
    padding: 0.1rem 0.3rem;
    border-radius: 4px;
    color: var(--line-green-dark);
    font-weight: 600;
    transition: all 0.2s ease;
}

.features-table .highlight:hover {
    background: rgba(0, 185, 0, 0.2);
    transform: scale(1.02);
}

.features-note {
    margin-top: 2rem;
    padding: 1.5rem;
    background: #f0f9f4;
    border-radius: 12px;
    border-left: 4px solid var(--line-green);
}

.features-note p {
    margin: 0;
    color: var(--text-dark);
    line-height: 1.8;
    text-align: center;
}

.features-note strong {
    color: var(--line-green-dark);
}

/* Responsive features table */
@media (max-width: 768px) {
    .features-table {
        font-size: 0.9rem;
    }
    
    .features-table th,
    .features-table td {
        padding: 0.8rem 0.5rem;
    }
    
    .features-table th:nth-child(3),
    .features-table td:nth-child(3) {
        display: none;
    }
    
    .icon-cell {
        font-size: 1.5rem;
        width: 40px;
        min-width: 40px;
        padding: 0.5rem 0.3rem;
    }
    
    .features-table th:first-child {
        width: 40px;
        min-width: 40px;
        padding: 0.8rem 0.3rem;
    }
    
    .feature-name {
        min-width: auto;
    }
    
    .use-case {
        font-size: 0.85rem;
    }
}

/* Features Section */
.features {
    background: var(--white);
}

.features h2 {
    color: var(--line-green-dark);
    font-size: 2rem;
    margin-bottom: 2rem;
    font-weight: 700;
}

.features ul {
    list-style: none;
    padding-left: 0;
}

.features li {
    padding: 1.2rem 0;
    font-size: 1.1rem;
    color: var(--text-dark);
    position: relative;
    padding-left: 3rem;
    transition: var(--transition);
    border-bottom: 1px solid rgba(0, 185, 0, 0.1);
}

.features li:last-child {
    border-bottom: none;
}

.features li i {
    position: absolute;
    left: 0;
    top: 1.2rem;
    color: var(--line-green);
    font-size: 1.5rem;
    width: 2rem;
    text-align: center;
}

.features li:hover {
    color: var(--line-green-dark);
    transform: translateX(5px);
    background: rgba(0, 185, 0, 0.02);
    margin: 0 -1rem;
    padding-left: 4rem;
}

.features li strong {
    font-weight: 600;
}

/* Pricing Section */
.pricing {
    background: #f8f9fa;
    padding: 4rem 3rem;
}

.pricing h2 {
    color: var(--line-green-dark);
    font-size: 2rem;
    margin-bottom: 2rem;
    font-weight: 700;
    text-align: center;
}

.pricing-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 800px;
    margin: 0 auto 2rem;
}

.pricing-card {
    background: var(--white);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.pricing-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.12);
}

.pricing-card.free {
    border: 2px solid var(--line-green);
}

.pricing-card.coming-soon {
    opacity: 0.8;
    border: 2px dashed #ccc;
}

.plan-header {
    text-align: center;
    margin-bottom: 2rem;
}

.plan-header h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.badge {
    display: inline-block;
    background: #ff9800;
    color: white;
    font-size: 0.75rem;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-weight: 500;
    margin-left: 0.5rem;
}

.price {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 0.25rem;
}

.amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--line-green-dark);
}

.period {
    font-size: 1rem;
    color: #666;
}

.plan-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.plan-features li {
    padding: 0.75rem 0;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-dark);
}

.plan-features li i {
    color: var(--line-green);
    font-size: 1rem;
}

.plan-features li.upcoming {
    color: #999;
    font-style: italic;
}

.plan-features li.upcoming small {
    display: block;
    font-size: 0.85rem;
    color: #666;
    margin-top: 0.25rem;
    font-style: normal;
}

.plan-cta {
    margin-top: 2rem;
    text-align: center;
}

.current-plan {
    display: inline-block;
    background: var(--line-green);
    color: white;
    padding: 0.75rem 2rem;
    border-radius: 100px;
    font-weight: 600;
}

.coming-soon-text {
    color: #666;
    font-size: 0.9rem;
    margin: 0;
}

.pricing-note {
    background: #e8f5e9;
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--line-green);
    max-width: 800px;
    margin: 0 auto;
}

.pricing-note p {
    margin: 0;
    color: var(--text-dark);
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.pricing-note i {
    color: var(--line-green);
    font-size: 1.2rem;
}

@media (max-width: 768px) {
    .pricing {
        padding: 3rem 1.5rem;
    }
    
    .pricing-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .pricing-card {
        padding: 1.5rem;
    }
    
    .amount {
        font-size: 2rem;
    }
}

/* Tutorials Section */
.tutorials {
    background: var(--white);
}

.tutorials h2 {
    color: var(--line-green-dark);
    font-size: 2rem;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(380px, 1fr));
    gap: 3rem;
    margin-top: 2rem;
    max-width: 1400px;
    margin-left: auto;
    margin-right: auto;
}

.video-item {
    background: linear-gradient(135deg, #f5f7fa 0%, #e9ecef 100%);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.video-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.15);
}

.video-item h3 {
    color: var(--primary);
    font-size: 1.3rem;
    margin-bottom: 1.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.video-container {
    position: relative;
    width: 100%;
    max-width: 320px;
    margin: 0 auto 1.5rem;
    background: #000;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.video-container::before {
    content: "";
    display: block;
    padding-top: 177.78%; /* 9:16 aspect ratio for mobile video */
}

.video-container video {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-placeholder {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: #f5f5f5;
    color: #666;
    text-align: center;
    padding: 2rem;
}

.video-placeholder i {
    color: #6c63ff;
    margin-bottom: 1rem;
}

.video-description {
    color: #666;
    font-size: 0.95rem;
    margin-bottom: 2rem;
    text-align: center;
    min-height: 3em;
    display: flex;
    align-items: center;
    justify-content: center;
}


.video-features {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-radius: 16px;
    padding: 1.5rem;
    margin-top: auto;
    border: 1px solid rgba(108, 99, 255, 0.1);
}

.video-features ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.video-features li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
    color: var(--text-dark);
}

.video-features li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--line-green);
    font-weight: bold;
}

.video-features h4 {
    color: var(--primary);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.video-note {
    margin-top: 1rem;
    padding: 0.75rem;
    background: #e8f4f8;
    border-radius: 8px;
    color: var(--text-dark);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.video-note i {
    color: var(--line-green);
}

@media (max-width: 1024px) {
    .video-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .video-container {
        max-width: 280px;
    }
}

@media (max-width: 768px) {
    .tutorials {
        padding: 3rem 1rem;
    }
    
    .video-item {
        padding: 1.5rem;
    }
    
    .video-grid {
        gap: 1.5rem;
    }
}

/* Usage Section (Old - keeping for reference) */
.usage {
    background: var(--white);
}

.usage h2 {
    color: var(--line-green-dark);
    font-size: 2rem;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.usage-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2.5rem;
    margin-top: 2rem;
}

.usage-item {
    text-align: center;
    transition: transform 0.3s ease;
}

.usage-item:hover {
    transform: translateY(-8px);
}

.usage-icon {
    display: inline-block;
    margin-bottom: 1.5rem;
}

.step-number {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--line-green) 0%, var(--line-green-dark) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    font-weight: 700;
    color: var(--white);
    box-shadow: 0 4px 20px var(--shadow);
    transition: var(--transition);
}

.usage-item:hover .step-number {
    transform: scale(1.1);
    box-shadow: 0 8px 30px var(--shadow-hover);
}

.usage-item h3 {
    color: var(--line-green-dark);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.usage-item p {
    color: var(--text-light);
    font-size: 1rem;
}

/* Legal Section */
.legal {
    background: linear-gradient(135deg, rgba(0, 185, 0, 0.03) 0%, transparent 100%);
}

.legal h2 {
    color: var(--line-green-dark);
    font-size: 2rem;
    margin-bottom: 2rem;
    font-weight: 700;
}

.legal ul {
    list-style: none;
}

.legal a {
    color: var(--line-green-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.legal a i {
    font-size: 1.1rem;
    color: var(--line-green);
}

.legal a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 1.6rem;
    right: 0;
    height: 2px;
    background: var(--line-green);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.legal a:hover {
    color: var(--line-green);
}

.legal a:hover::after {
    transform: scaleX(1);
}

/* Language Selector */
.language-selector {
    display: flex;
    gap: 2rem;
    margin-top: 2rem;
}

.lang-group {
    flex: 1;
    padding: 2rem;
    background: rgba(0, 185, 0, 0.05);
    border-radius: 16px;
    transition: var(--transition);
    border: 2px solid transparent;
}

.lang-group:hover {
    background: rgba(0, 185, 0, 0.08);
    transform: translateY(-3px);
    border-color: var(--line-green);
    box-shadow: 0 8px 20px var(--shadow);
}

.lang-group h3 {
    color: var(--line-green-dark);
    font-size: 1.3rem;
    margin-bottom: 1rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

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

.lang-group ul {
    padding-left: 0;
}

.lang-group li {
    padding: 0.8rem 0;
}

/* Security Section */
.security {
    background: linear-gradient(135deg, rgba(0, 185, 0, 0.05) 0%, rgba(0, 185, 0, 0.02) 100%);
}

.security h2 {
    color: var(--line-green-dark);
    font-size: 2rem;
    margin-bottom: 2.5rem;
    font-weight: 700;
}

.security-features {
    display: grid;
    gap: 2rem;
}

.security-item {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 1.5rem;
    background: rgba(0, 185, 0, 0.05);
    border-radius: 16px;
    transition: var(--transition);
    border: 2px solid transparent;
}

.security-item:hover {
    background: rgba(0, 185, 0, 0.08);
    transform: translateX(8px);
    border-color: var(--line-green);
    box-shadow: 0 4px 20px var(--shadow);
}

.security-icon {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--line-green) 0%, var(--line-green-dark) 100%);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    box-shadow: 0 4px 15px var(--shadow);
}

.security-icon i {
    font-size: 1.5rem;
    color: var(--white);
}

.security-item h4 {
    color: var(--line-green-dark);
    font-size: 1.2rem;
    margin-bottom: 0.3rem;
    font-weight: 600;
}

.security-item p {
    color: var(--text-light);
    font-size: 1rem;
    line-height: 1.6;
}

/* Footer */
footer {
    padding: 4rem 1rem 2rem;
    color: var(--text-light);
    font-size: 0.95rem;
    background: linear-gradient(to top, rgba(0, 185, 0, 0.05) 0%, transparent 100%);
}

.footer-content {
    max-width: 1000px;
    margin: 0 auto;
}

.footer-main {
    text-align: center;
    margin-bottom: 3rem;
}

.footer-main p {
    font-weight: 500;
    margin-bottom: 1rem;
}

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

.social-links a {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: transparent;
    color: #000;
    border: 2px solid #000;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
    font-size: 1.2rem;
}

.social-links a:hover {
    background: #000;
    color: white;
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.footer-legal {
    border-top: 1px solid rgba(0, 185, 0, 0.2);
    padding-top: 2rem;
    text-align: center;
}

.footer-legal h4 {
    color: var(--line-green-dark);
    font-size: 1.1rem;
    margin-bottom: 1rem;
    font-weight: 600;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
    flex-wrap: wrap;
}

.footer-lang-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer-lang-group .flag-icon {
    font-size: 1.1rem;
}

.footer-lang-group a {
    color: var(--line-green-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-lang-group a:hover {
    color: var(--line-green);
    text-decoration: underline;
}

.footer-lang-group .separator {
    color: #999;
    margin: 0 0.25rem;
}

@media (max-width: 768px) {
    .footer-links {
        flex-direction: column;
        gap: 1rem;
    }
    
    .footer-lang-group {
        justify-content: center;
    }
}

/* Legal Content Pages */
.legal-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 1rem;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.legal-content h1 {
    color: var(--line-green-dark);
    margin-bottom: 2rem;
    font-size: 3rem;
    font-weight: 700;
    position: relative;
    padding-bottom: 1.5rem;
}

.legal-content h1::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100px;
    height: 5px;
    background: linear-gradient(90deg, var(--line-green) 0%, var(--line-green-light) 100%);
    border-radius: 3px;
}

.legal-content h2 {
    color: var(--text-dark);
    margin-top: 3rem;
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    font-weight: 600;
    position: relative;
    padding-left: 1.5rem;
}

.legal-content h2::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 5px;
    height: 30px;
    background: linear-gradient(180deg, var(--line-green) 0%, var(--line-green-dark) 100%);
    border-radius: 3px;
}

.legal-content p {
    margin-bottom: 1.5rem;
    line-height: 1.8;
    color: var(--text-dark);
    font-size: 1.05rem;
}

.legal-content ul {
    margin-left: 2rem;
    margin-bottom: 1.5rem;
}

.legal-content li {
    margin-bottom: 0.8rem;
    position: relative;
    line-height: 1.8;
    color: var(--text-dark);
}

/* Back Link */
.back-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--line-green-dark);
    text-decoration: none;
    margin-bottom: 2rem;
    font-weight: 600;
    transition: var(--transition);
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 8px;
}

.back-link::before {
    content: '←';
    transition: transform 0.3s ease;
}

.back-link:hover {
    color: var(--line-green);
    background: rgba(0, 185, 0, 0.05);
}

.back-link:hover::before {
    transform: translateX(-3px);
}

/* Modern Card Effects */
.card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: 0 4px 20px var(--shadow);
    transition: var(--transition);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 12px 40px var(--shadow-hover);
}

/* Responsive Design */
@media (max-width: 768px) {
    header h1 {
        font-size: 2.5rem;
    }
    
    
    .hero h2 {
        font-size: 2rem;
    }
    
    section {
        padding: 2rem;
    }
    
    .language-selector {
        flex-direction: column;
        gap: 1.5rem;
    }
    
    .cta-button {
        padding: 1rem 2.5rem;
        font-size: 1rem;
    }

    .features li {
        padding-left: 2.5rem;
    }

    .features li:hover {
        padding-left: 3.5rem;
    }
}

@media (max-width: 480px) {
    header {
        padding: 3rem 1rem;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .hero h2 {
        font-size: 1.8rem;
    }
    
    section {
        padding: 1.5rem;
        margin-bottom: 1.5rem;
    }
    
    .legal-content h1 {
        font-size: 2.5rem;
    }

    .usage-grid {
        gap: 2rem;
    }

    .security-item {
        flex-direction: column;
        text-align: center;
    }
}

/* Loading Animation */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 185, 0, 0.3);
    border-radius: 50%;
    border-top-color: var(--line-green);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}

/* Selection Color */
::selection {
    background: rgba(0, 185, 0, 0.2);
    color: var(--text-dark);
}

/* Focus Styles */
a:focus,
button:focus {
    outline: 2px solid var(--line-green);
    outline-offset: 2px;
}

/* Print Styles */
@media print {
    body {
        color: #000;
        background: #fff;
    }
    
    header,
    footer,
    .cta-button {
        display: none;
    }
    
    section {
        box-shadow: none;
        border: 1px solid #ddd;
        page-break-inside: avoid;
    }
}