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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background: #262a2e;
    color: #ffffff;
    padding: 0;
    margin: 0;
    line-height: 1.6;
}

.container {
    max-width: 600px;
    margin: 0 auto;
    padding: 0;
    padding-bottom: 30px;
}

.header {
    text-align: center;
    padding: 30px 20px;
    background: linear-gradient(135deg, #262a2e 0%, #1a1d21 100%);
    border-bottom: 3px solid #ffb800;
}

.profile-photo {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    border: 3px solid #ffb800;
    margin-bottom: 15px;
    object-fit: cover;
}

.header h1 {
    font-size: 28px;
    margin-bottom: 5px;
    color: #ffb800;
}

.header p {
    font-size: 15px;
    color: #b0b0b0;
}

.welcome-section {
    padding: 20px;
    text-align: center;
    background: #2d3238;
    margin: 0;
}

.welcome-section p {
    font-size: 16px;
    margin: 5px 0;
}

#user-name {
    color: #ffb800;
    font-weight: 600;
}

.lessons-section,
.links-section {
    padding: 25px 20px;
}

.lessons-section h2,
.links-section h2 {
    font-size: 20px;
    margin-bottom: 20px;
    color: #ffb800;
}

.lesson-card {
    display: block;
    background: #2d3238;
    border-radius: 12px;
    overflow: hidden;
    margin-bottom: 15px;
    text-decoration: none;
    color: #ffffff;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid #3a3f45;
}

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

.lesson-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%;
    background: #1a1d21;
    overflow: hidden;
}

.lesson-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.play-button {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 184, 0, 0.9);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    color: #262a2e;
    padding-left: 5px;
}

.lesson-info {
    padding: 15px;
}

.lesson-info h3 {
    font-size: 17px;
    margin-bottom: 8px;
    color: #ffb800;
}

.lesson-info p {
    font-size: 14px;
    color: #b0b0b0;
    line-height: 1.4;
}

.link-button {
    display: flex;
    align-items: center;
    gap: 15px;
    background: #2d3238;
    border-radius: 12px;
    padding: 15px;
    margin-bottom: 12px;
    text-decoration: none;
    color: #ffffff;
    transition: transform 0.2s, background 0.2s;
    border: 1px solid #3a3f45;
}

.link-button:active {
    transform: scale(0.98);
    background: #343940;
}

.link-button .icon {
    font-size: 32px;
    min-width: 40px;
    text-align: center;
}

.link-button strong {
    display: block;
    font-size: 16px;
    color: #ffb800;
    margin-bottom: 3px;
}

.link-button p {
    font-size: 13px;
    color: #b0b0b0;
    margin: 0;
}

.link-button.instagram {
    background: linear-gradient(135deg, #833ab4 0%, #fd1d1d 50%, #fcb045 100%);
    border: none;
}

.link-button.instagram strong,
.link-button.instagram p {
    color: #ffffff;
}

.footer {
    text-align: center;
    padding: 20px;
    color: #888;
    font-size: 13px;
}

@media (max-width: 480px) {
    .header h1 {
        font-size: 24px;
    }
    .profile-photo {
        width: 80px;
        height: 80px;
    }
    .lessons-section h2,
    .links-section h2 {
        font-size: 18px;
    }
    .lesson-info h3 {
        font-size: 16px;
    }
}