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

:root {
    /* Dark Mode Colors */
    --primary-color: #6366f1;
    --primary-hover: #818cf8;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --error-color: #ef4444;
    --warning-color: #f59e0b;
    --info-color: #3b82f6;
    
    /* Dark Backgrounds */
    --bg-color: #0f172a;
    --bg-secondary: #1e293b;
    --card-bg: #1e293b;
    --card-hover: #334155;
    
    /* Text Colors */
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    /* Borders */
    --border-color: #334155;
    --border-hover: #475569;
    
    /* Shadows */
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.3), 0 1px 2px 0 rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.5), 0 10px 10px -5px rgba(0, 0, 0, 0.2);
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background: var(--gradient-dark);
    min-height: 100vh;
    padding: 20px;
    color: var(--text-primary);
}

.container {
    max-width: 700px;
    margin: 0 auto;
}

header {
    text-align: center;
    color: var(--text-primary);
    margin-bottom: 40px;
    padding: 20px;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.subtitle {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

main {
    margin-bottom: 40px;
}

.form-card,
.result-card,
.error-card {
    background: var(--card-bg);
    border-radius: 20px;
    padding: 32px;
    box-shadow: var(--shadow-lg);
    margin-bottom: 20px;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.form-card:hover {
    border-color: var(--border-hover);
    box-shadow: var(--shadow-xl);
}

.form-group {
    margin-bottom: 24px;
}

label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
    font-size: 0.95rem;
}

input[type="text"],
input[type="password"],
input[type="number"] {
    width: 100%;
    padding: 14px 18px;
    border: 2px solid var(--border-color);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s;
    font-family: inherit;
    background: var(--bg-color);
    color: var(--text-primary);
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="number"]:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
    background: var(--bg-secondary);
}

input[type="text"]::placeholder,
input[type="password"]::placeholder,
input[type="number"]::placeholder {
    color: var(--text-muted);
}

/* Port input group styling */
.port-input-group {
    display: flex;
    gap: 12px;
    align-items: stretch;
}

.port-input-group input[type="number"] {
    flex: 1;
    min-width: 0;
}

.btn-generate-port {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 14px 20px;
    white-space: nowrap;
    font-weight: 600;
    transition: all 0.2s;
    border-radius: 12px;
}

.btn-generate-port:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-generate-port span:first-child {
    font-size: 1.1rem;
}

small {
    display: block;
    margin-top: 6px;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.btn-primary,
.btn-secondary {
    width: 100%;
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-family: inherit;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 4px 6px -1px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px -2px rgba(99, 102, 241, 0.4);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-secondary {
    background: var(--secondary-color);
    color: white;
    margin-top: 16px;
}

.btn-secondary:hover {
    background: #475569;
    transform: translateY(-2px);
}

.result-card h2,
.error-card h2 {
    margin-bottom: 16px;
    font-size: 1.5rem;
}

.result-card {
    border-left: 4px solid var(--success-color);
}

.error-card {
    border-left: 4px solid var(--error-color);
}

#resultContent,
#errorContent {
    line-height: 1.8;
    color: var(--text-secondary);
}

.result-item {
    padding: 16px;
    background: var(--bg-color);
    border-radius: 12px;
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--border-color);
}

.result-item strong {
    color: var(--text-primary);
    min-width: 120px;
}

.result-item a {
    color: var(--primary-color);
    text-decoration: none;
    word-break: break-all;
}

.result-item a:hover {
    text-decoration: underline;
    color: var(--primary-hover);
}

footer {
    text-align: center;
    color: var(--text-secondary);
    opacity: 0.8;
    padding: 20px;
}

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

.btn-loader {
    display: inline-block;
    animation: spin 1s linear infinite;
}

.nav-menu {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    background: var(--card-bg);
    padding: 8px;
    border-radius: 16px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
}

.nav-btn {
    flex: 1;
    padding: 12px 16px;
    border: none;
    border-radius: 10px;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 0.95rem;
}

.nav-btn:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

.nav-btn.active {
    background: var(--primary-color);
    color: white;
    box-shadow: 0 2px 4px rgba(99, 102, 241, 0.3);
}

.page-content {
    display: block;
}

.page-content[style*="display: none"] {
    display: none !important;
}

.bulk-actions {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg-color);
    border-radius: 12px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 600;
    color: var(--text-primary);
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.repo-item,
.app-item {
    padding: 16px;
    background: var(--bg-color);
    border-radius: 12px;
    margin-bottom: 12px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.repo-item:hover,
.app-item:hover {
    border-color: var(--border-hover);
    background: var(--bg-secondary);
}

.repo-item-checkbox,
.app-item-checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    min-width: 0;
}

.repo-item-info,
.app-item-info {
    flex: 1;
    min-width: 0;
}

.repo-item-name,
.app-item-name {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 4px;
    word-break: break-all;
}

.repo-item-url,
.app-item-url {
    font-size: 0.85rem;
    color: var(--text-secondary);
    word-break: break-all;
}

.repo-item-url a,
.app-item-url a {
    color: var(--primary-color);
    text-decoration: none;
}

.repo-item-url a:hover,
.app-item-url a:hover {
    text-decoration: underline;
    color: var(--primary-hover);
}

.btn-danger {
    background: var(--error-color);
    color: white;
    padding: 10px 18px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    white-space: nowrap;
    box-shadow: 0 2px 4px rgba(239, 68, 68, 0.3);
}

.btn-danger:hover:not(:disabled) {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(239, 68, 68, 0.4);
}

.btn-danger:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

.empty-state p {
    margin-bottom: 16px;
}

.modal-links {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-top: 16px;
}

.modal-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    background: var(--primary-color);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s;
    font-size: 0.95rem;
    width: fit-content;
    font-family: inherit;
}

.modal-link-btn:hover {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.modal-link-btn::after {
    content: '↗';
    font-size: 1rem;
    margin-left: 4px;
}

/* Modal Styles */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(8px);
    animation: fadeIn 0.2s ease-in;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow-xl);
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    display: flex;
    flex-direction: column;
    animation: slideUp 0.3s ease-out;
    border: 1px solid var(--border-color);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    margin: 0;
    font-size: 1.5rem;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    font-size: 2rem;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.2s;
}

.modal-close:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

.modal-body {
    padding: 24px;
    overflow-y: auto;
    flex: 1;
    min-height: 0;
    color: var(--text-secondary);
}

.modal-body pre {
    background: var(--bg-color);
    padding: 16px;
    border-radius: 12px;
    overflow-x: auto;
    white-space: pre-wrap;
    word-wrap: break-word;
    font-family: 'Courier New', monospace;
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    margin: 0;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: flex-end;
    gap: 12px;
}

/* Toast Notification Styles */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-width: 400px;
}

.toast {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 16px 20px;
    box-shadow: var(--shadow-xl);
    display: flex;
    align-items: center;
    gap: 12px;
    animation: slideInRight 0.3s ease-out;
    min-width: 300px;
}

.toast.success {
    border-left: 4px solid var(--success-color);
}

.toast.error {
    border-left: 4px solid var(--error-color);
}

.toast.warning {
    border-left: 4px solid var(--warning-color);
}

.toast.info {
    border-left: 4px solid var(--info-color);
}

.toast-icon {
    font-size: 1.5rem;
    flex-shrink: 0;
}

.toast-content {
    flex: 1;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    transition: all 0.2s;
    flex-shrink: 0;
}

.toast-close:hover {
    background: var(--bg-color);
    color: var(--text-primary);
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

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

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes slideOutRight {
    from {
        transform: translateX(0);
        opacity: 1;
    }
    to {
        transform: translateX(100%);
        opacity: 0;
    }
}

.toast.hiding {
    animation: slideOutRight 0.3s ease-out forwards;
}

.iframe-overlay-buttons {
    position: absolute;
    top: 16px;
    right: 16px;
    display: flex;
    gap: 8px;
    z-index: 1001;
    background: var(--card-bg);
    padding: 8px;
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.manage-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    padding: 16px;
    background: var(--bg-color);
    border-radius: 12px;
    margin-bottom: 12px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.manage-item:hover {
    border-color: var(--border-hover);
    background: var(--bg-secondary);
}

.manage-item-single {
    grid-column: 1 / -1;
}

.manage-repo,
.manage-app {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.manage-repo-header,
.manage-app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.manage-repo-name,
.manage-app-name {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 1rem;
}

.manage-repo-url,
.manage-app-info {
    font-size: 0.85rem;
    color: var(--text-secondary);
    word-break: break-all;
}

.manage-repo-url a {
    color: var(--primary-color);
    text-decoration: none;
}

.manage-repo-url a:hover {
    text-decoration: underline;
    color: var(--primary-hover);
}

.manage-checkbox-wrapper {
    display: flex;
    align-items: center;
    gap: 8px;
}

.manage-checkbox-wrapper input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

@media (max-width: 768px) {
    .manage-item {
        grid-template-columns: 1fr;
    }
    
    .bulk-actions {
        flex-direction: column;
        gap: 12px;
    }
    
    .bulk-actions > div {
        display: flex;
        flex-direction: column;
        gap: 8px;
        width: 100%;
    }
    
    .bulk-actions button {
        width: 100%;
    }
}