/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

:root {
    /* Light mode (default) */
    --primary-color: #000;
    --secondary-color: #f5f5f5;
    --accent-color: #444;
    --text-color: #333;
    --light-text: #666;
    --border-color: #e5e5e5;
    --divider-color: #e0e0e0;
    --button-color: #333;
    --button-text-color: #fff;
    --card-bg: #fff;
    --card-border: rgba(0, 0, 0, 0.12);
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    --bg-color: #fff;
    --header-bg: rgba(255, 255, 255, 0.98);
    --header-bg-scrolled: rgba(255, 255, 255, 0.8);
    --success-color: #4CAF50;
    --error-color: #f44336;
}

[data-theme="dark"] {
    /* Dark mode */
    --primary-color: #fff;
    --secondary-color: #1e1e1e;
    --accent-color: #8e8e8e;
    --text-color: #f0f0f0;
    --light-text: #c0c0c0;
    --border-color: #333;
    --divider-color: #2a2a2a;
    --button-color: #666;
    --button-text-color: #fff;
    --card-bg: #1a1a1a;
    --card-border: rgba(255, 255, 255, 0.1);
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    --bg-color: #121212;
    --header-bg: rgba(18, 18, 18, 0.98);
    --header-bg-scrolled: rgba(18, 18, 18, 0.8);
    --success-color: #4CAF50;
    --error-color: #f44336;
}

body {
    line-height: 1.6;
    color: var(--text-color);
    background-color: var(--bg-color);
    overflow-x: hidden;
    font-weight: 500;
    transition: background-color 0.3s ease, color 0.3s ease;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

a {
    text-decoration: none;
    color: inherit;
}

ul {
    list-style: none;
}

button, .button {
    cursor: pointer;
    border: none;
    outline: none;
    background-color: var(--button-color);
    color: var(--button-text-color);
    padding: 10px 20px;
    border-radius: 4px;
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-block;
    font-size: 14px;
}

button:hover, .button:hover {
    background-color: #555;
}

/* Header and Navigation */
header {
    padding: 12px 0;
    position: sticky;
    top: 0;
    background-color: var(--header-bg);
    z-index: 100;
    border-bottom: 1px solid var(--border-color);
    transition: backdrop-filter 0.3s ease, background-color 0.3s ease;
}

header.scrolled {
    backdrop-filter: blur(8px);
    background-color: var(--header-bg-scrolled);
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 40px;
}

.logo a {
    display: flex;
    align-items: center;
    font-weight: 700;
    font-size: 22px;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    letter-spacing: 1px;
}

.right-nav {
    display: flex;
    align-items: center;
    gap: 30px;
}

.server-info-header {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    color: var(--light-text);
    font-weight: 600;
}

.server-info-header span {
    display: flex;
    align-items: center;
    gap: 6px;
}

.server-info-header i {
    color: var(--button-color);
    font-size: 12px;
}

/* Theme Toggler */
.theme-toggle {
    display: flex;
    align-items: center;
    cursor: pointer;
    padding: 8px;
    border-radius: 4px;
    transition: background-color 0.3s ease;
}

.theme-toggle:hover {
    background-color: var(--secondary-color);
}

.theme-toggle i {
    font-size: 18px;
    color: var(--text-color);
    transition: color 0.3s ease;
}

/* Main Content */
main {
    flex: 1;
    width: 100%;
    padding: 40px;
}

.lg-container {
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
}

.lg-content {
    width: 100%;
}

.lg-form-section {
    width: 100%;
}

.lg-form {
    width: 100%;
    margin-bottom: 20px;
}

.form-row {
    display: flex;
    gap: 15px;
    align-items: flex-end;
    width: 100%;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-large {
    flex: 1;
    min-width: 300px;
}

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

.form-group label {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
    font-size: 14px;
    color: var(--text-color);
    font-weight: 600;
}

.form-group label i {
    color: var(--button-color);
    font-size: 14px;
}

.form-group input {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--border-color);
    border-radius: 4px;
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 14px;
    font-family: Arial, sans-serif;
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

.form-group input:focus {
    outline: none;
    border-color: var(--button-color);
}

.submit-button {
    padding: 12px 24px;
    background-color: var(--button-color);
    color: var(--button-text-color);
    font-size: 14px;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
    height: 44px;
}

.submit-button:hover {
    background-color: #555;
}

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

.submit-button i {
    font-size: 14px;
}

.submit-button .spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: var(--button-text-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    margin-right: 8px;
    vertical-align: middle;
}

/* Loading Indicator */
.loading-indicator {
    display: none;
    align-items: center;
    gap: 12px;
    padding: 15px 20px;
    background-color: var(--secondary-color);
    border-radius: 4px;
    margin-bottom: 20px;
    color: var(--text-color);
    font-weight: 600;
    font-size: 14px;
}

.loading-indicator.show {
    display: flex;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid var(--border-color);
    border-top-color: var(--button-color);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

/* Error Message */
.error-message {
    margin-top: 15px;
    padding: 12px 16px;
    background-color: rgba(244, 67, 54, 0.1);
    border-left: 3px solid var(--error-color);
    border-radius: 4px;
    color: var(--error-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
}

.error-message i {
    font-size: 16px;
}

/* Result Section */
.result-section {
    margin-top: 20px;
    padding: 20px;
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    box-shadow: var(--card-shadow);
}

.result-header-inline {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 15px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.result-status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.result-status-badge.success {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success-color);
}

.result-status-badge.failed {
    background-color: rgba(244, 67, 54, 0.2);
    color: var(--error-color);
}

.result-status-badge.empty {
    background-color: var(--secondary-color);
    color: var(--light-text);
}

.result-status-badge i {
    font-size: 14px;
}

.result-info-inline {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    color: var(--light-text);
    flex-wrap: wrap;
}

.result-info-inline span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.result-info-inline strong {
    color: var(--text-color);
    font-weight: 600;
}

.result-output {
    margin-top: 15px;
}

.output-content {
    background-color: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 4px;
    padding: 15px;
    font-family: 'Courier New', monospace;
    font-size: 13px;
    line-height: 1.6;
    color: var(--text-color);
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    max-height: 400px;
    overflow-y: auto;
    margin: 0;
}

.output-content.empty-output {
    color: var(--light-text);
    font-style: italic;
}

/* Speedtest Section */
.speedtest-section {
    margin-top: 40px;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

.speedtest-header {
    margin-bottom: 25px;
}

.speedtest-header h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 10px;
}

.speedtest-header h3 i {
    color: var(--button-color);
    font-size: 20px;
}

.speedtest-description {
    color: var(--light-text);
    font-size: 14px;
    font-weight: 600;
}

.speedtest-files {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 15px;
    margin-bottom: 30px;
}

.speedtest-file-card {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

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

.file-info {
    display: flex;
    align-items: center;
    gap: 15px;
}

.file-icon {
    width: 40px;
    height: 40px;
    background-color: var(--secondary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.file-icon i {
    color: var(--button-color);
    font-size: 18px;
}

.file-details {
    display: flex;
    flex-direction: column;
}

.file-size {
    font-size: 16px;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 4px;
}

.file-desc {
    font-size: 12px;
    color: var(--light-text);
    font-weight: 600;
}

.speedtest-button {
    padding: 10px 20px;
    background-color: var(--button-color);
    color: var(--button-text-color);
    border: none;
    border-radius: 4px;
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s ease;
}

.speedtest-button:hover {
    background-color: #555;
}

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

.speedtest-button i {
    font-size: 12px;
}

.speedtest-result {
    background-color: var(--card-bg);
    border: 1px solid var(--card-border);
    border-radius: 4px;
    padding: 20px;
    box-shadow: var(--card-shadow);
}

.speedtest-result-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--border-color);
    flex-wrap: wrap;
}

.speedtest-status-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 14px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.speedtest-status-badge.empty {
    background-color: var(--secondary-color);
    color: var(--light-text);
}

.speedtest-status-badge.testing {
    background-color: rgba(100, 150, 255, 0.2);
    color: #6496ff;
}

.speedtest-status-badge.success {
    background-color: rgba(76, 175, 80, 0.2);
    color: var(--success-color);
}

.speedtest-status-badge i {
    font-size: 14px;
}

.speedtest-status-badge .fa-spinner {
    animation: spin 1s linear infinite;
}

.speedtest-info-inline {
    display: flex;
    align-items: center;
    gap: 20px;
    font-size: 13px;
    color: var(--light-text);
    flex-wrap: wrap;
}

.speedtest-info-inline span {
    display: flex;
    align-items: center;
    gap: 5px;
}

.speedtest-info-inline strong {
    color: var(--text-color);
    font-weight: 600;
}

.speedtest-output {
    margin-top: 15px;
}

.speedtest-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    margin-bottom: 20px;
}

.stat-item {
    text-align: center;
}

.stat-label {
    font-size: 12px;
    color: var(--light-text);
    font-weight: 600;
    margin-bottom: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-color);
    font-family: 'Courier New', monospace;
}

.speedtest-progress-bar {
    width: 100%;
    height: 8px;
    background-color: var(--secondary-color);
    border-radius: 4px;
    overflow: hidden;
    margin-top: 15px;
}

.progress-fill {
    height: 100%;
    background-color: var(--button-color);
    width: 0%;
    transition: width 0.3s ease;
    border-radius: 4px;
}

/* Footer */
footer {
    padding: 20px 0;
    border-top: 1px solid var(--border-color);
    width: 100%;
    margin-top: auto;
}

.footer-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 40px;
}

.footer-logo {
    display: flex;
    align-items: center;
    font-size: 14px;
    color: var(--light-text);
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 20px;
}

.footer-links a {
    color: var(--light-text);
    font-size: 14px;
    font-weight: 600;
    transition: color 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 1024px) {
    nav {
        padding: 0 20px;
    }
    
    .server-info-header {
        display: none;
    }
    
    main {
        padding: 30px 20px;
    }
}

@media (max-width: 768px) {
    nav {
        padding: 0 15px;
    }
    
    .logo a {
        font-size: 18px;
    }
    
    main {
        padding: 20px 15px;
    }
    
    .form-row {
        flex-direction: column;
        align-items: stretch;
    }
    
    .form-group-button {
        width: 100%;
    }
    
    .result-header-inline {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .result-info-inline {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .speedtest-files {
        grid-template-columns: 1fr;
    }
    
    .speedtest-file-card {
        flex-direction: column;
        gap: 15px;
        align-items: stretch;
    }
    
    .speedtest-button {
        width: 100%;
        justify-content: center;
    }
    
    .speedtest-stats {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .speedtest-result-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    
    .speedtest-info-inline {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    
    .footer-container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
        padding: 0 15px;
    }
}