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

html {
    scrollbar-width: thin;
    scrollbar-color: #8c5c3f #d4b37c;
}

::-webkit-scrollbar {
    width: 16px;
}

::-webkit-scrollbar-track {
    background: #d4b37c;
    border-left: 1px solid #8c5c3f;
}

::-webkit-scrollbar-thumb {
    background: #8c5c3f;
    border: 3px solid #d4b37c;
    border-radius: 8px;
}

::-webkit-scrollbar-thumb:hover {
    background: #523a28;
}

::-webkit-scrollbar-button:single-button {
    background-color: #d4b37c;
    display: block;
    background-size: 10px;
    background-repeat: no-repeat;
    border: 1px solid #8c5c3f;
    height: 16px;
}

::-webkit-scrollbar-button:single-button:vertical:decrement {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100' height='100' fill='%238c5c3f'><polygon points='50,30 100,80 0,80'/></svg>");
    background-position: center 4px;
}

::-webkit-scrollbar-button:single-button:vertical:increment {
    background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='100' height='100' fill='%238c5c3f'><polygon points='50,70 100,20 0,20'/></svg>");
    background-position: center 2px;
}

body {
    font-family: 'Courier New', monospace;
    background-color: #d4b37c;
    color: #523a28;
    line-height: 1.6;
    padding: 0;
    margin: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background-image: url('data:image/svg+xml;utf8,<svg xmlns="http://www.w3.org/2000/svg" width="100" height="100" viewBox="0 0 100 100"><rect width="100" height="100" fill="%23d4b37c"/><path d="M0,0 L100,100 M100,0 L0,100" stroke="%23b3935c" stroke-width="1"/></svg>');
}

.container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    background-color: #f5e8c8;
    border: 8px double #8c5c3f;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

h1 {
    text-align: center;
    margin-bottom: -10px;
    color: #523a28;
    font-size: 1.8rem;
    text-transform: uppercase;
}

.form-group {
    margin-bottom: 15px;
}

.split-fields {
    display: flex;
    gap: 10px;
}

.split-fields .form-group {
    flex: 1;
}

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #523a28;
}

input[type="text"],
input[type="password"],
input[type="email"] {
    width: 100%;
    padding: 12px;
    border: 3px solid #8c5c3f;
    border-radius: 5px;
    background-color: #f5e8c8;
    font-family: 'Courier New', monospace;
    font-size: 16px;
    color: #523a28;
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin: 15px 0;
}

.checkbox-group label {
    margin: 2px 0 0;
}

input[type="checkbox"] {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-color: #f5e8c8;
    border: 1px solid #8c5c3f;
    border-radius: 3px;
    margin-right: 10px;
    width: 18px;
    height: 18px;
}
input[type="checkbox"]:checked {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    background-color: #8c5c3f;
    border: 1px solid #8c5c3f;
    border-radius: 3px;
    margin-right: 10px;
    width: 18px;
    height: 18px;
}
input[type="checkbox"]:checked::before {
    content: '✔';
    font-size: 16px;
    color: #f5e8c8;
    line-height: 1;
    text-align: center;
    display: block;
}

.buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 20px;
}

button {
    padding: 12px 15px;
    border: none;
    border-radius: 5px;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
    flex: 1;
    min-width: 120px;
}

.style1-btn {
    background: linear-gradient(to bottom, #8c5c3f, #523a28);
    color: #f5e8c8;
}

.style2-btn {
    background: linear-gradient(to bottom, #a67c52, #8c5c3f);
    color: #f5e8c8;
}

.style3-btn {
    background: linear-gradient(to bottom, #d4b37c, #a67c52);
    color: #523a28;
}

button:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
}

.decoration {
    height: 15px;
    background: repeating-linear-gradient(
        45deg,
        #8c5c3f,
        #8c5c3f 10px,
        #d4b37c 10px,
        #d4b37c 20px
    );
    margin: 15px 0;
}

input[type="file"] {
    width: 100%;
    padding: 12px;
    border: 3px solid #8c5c3f;
    border-radius: 5px;
    background-color: #f5e8c8;
    font-family: 'Courier New', monospace;
    font-size: 16px;
    color: #523a28;
    cursor: pointer;
    transition: all 0.3s ease;
}

input[type="file"]:hover {
    background-color: #e9d8b6;
    border-color: #523a28;
}

input[type="file"]:focus {
    outline: none;
    border-color: #a67c52;
    box-shadow: 0 0 0 3px rgba(166, 124, 82, 0.3);
}

input[type="file"]::file-selector-button {
    padding: 8px 12px;
    border: 2px solid #8c5c3f;
    border-radius: 3px;
    background: linear-gradient(to bottom, #a67c52, #8c5c3f);
    color: #f5e8c8;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

input[type="file"]::file-selector-button:hover {
    background: linear-gradient(to bottom, #8c5c3f, #523a28);
    transform: translateY(-1px);
}

input[type="file"]::-webkit-file-upload-button {
    padding: 8px 12px;
    border: 2px solid #8c5c3f;
    border-radius: 3px;
    background: linear-gradient(to bottom, #a67c52, #8c5c3f);
    color: #f5e8c8;
    font-family: 'Courier New', monospace;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s ease;
}

input[type="file"]::-webkit-file-upload-button:hover {
    background: linear-gradient(to bottom, #8c5c3f, #523a28);
    transform: translateY(-1px);
}

.error-message {
    color: #d32f2f;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: linear-gradient(135deg, #8c5c3f 0%, #523a28 100%);
    padding: 15px 20px;
    border-radius: 0;
    margin-bottom: 20px;
    color: #f5e8c8;
    width: 100%;
    box-sizing: border-box;
}

.main-content {
    flex: 1;
    padding: 20px;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    box-sizing: border-box;
}

.site-logo {
    font-family: 'Arial Black', sans-serif;
    font-size: 2rem;
    color: #f5e8c8;
    text-shadow: 2px 2px 0 #523a28;
}

.user-info {
    position: relative;
    display: flex;
    align-items: center;
    cursor: pointer;
}

.user-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background-color: #d4b37c;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 10px;
    font-weight: bold;
    font-size: 20px;
    color: #523a28;
    border: 2px solid #f5e8c8;
    overflow: hidden;
}

.user-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.user-name {
    font-weight: bold;
}

.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    background-color: #f5e8c8;
    border: 2px solid #8c5c3f;
    border-radius: 5px;
    padding: 10px;
    min-width: 150px;
    z-index: 100;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.dropdown-menu a {
    display: block;
    padding: 8px 10px;
    color: #523a28;
    text-decoration: none;
    border-radius: 3px;
}

.dropdown-menu a:hover {
    background-color: #e9d8b6;
}

.user-info:hover .dropdown-menu {
    display: block;
}

.page-header .loading-spinner {
    margin: 0;
    width: 20px;
    height: 20px;
}

.auth-buttons .style3-btn {
    margin: 0;
    white-space: nowrap;
}

.user-info {
    position: relative;
    min-height: 50px;
    display: flex;
    align-items: center;
}

@media (max-width: 768px) {
    body {
        padding: 15px;
    }
    
    h1 {
        font-size: 1.5rem;
    }
    
    .buttons {
        flex-direction: column;
    }
    
    button {
        width: 100%;
    }

    input[type="file"] {
        padding: 10px;
        font-size: 14px;
    }
    
    input[type="file"]::file-selector-button,
    input[type="file"]::-webkit-file-upload-button {
        padding: 6px 10px;
        font-size: 14px;
    }
}

@media (max-width: 480px) {
    body {
        padding: 10px;
    }
    
    h1 {
        font-size: 1.3rem;
    }
    
    input[type="text"],
    input[type="password"],
    input[type="email"] {
        padding: 10px;
    }
    
    button {
        padding: 10px;
        font-size: 14px;
    }

    input[type="file"] {
        padding: 8px;
        font-size: 12px;
    }
    
    input[type="file"]::file-selector-button,
    input[type="file"]::-webkit-file-upload-button {
        padding: 5px 8px;
        font-size: 12px;
    }
}

@media (max-width: 320px) {
    h1 {
        font-size: 1.1rem;
    }
}

.loading-spinner {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #8c5c3f;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 10px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.form-loading {
    opacity: 0.7;
    pointer-events: none;
}