:root {
    --bg-primary: #1f2937;
    --bg-secondary: #111827;
    --text-primary: #f3f4f6;
    --text-secondary: #9ca3af;
    --accent-primary: #818cf8;
    --accent-hover: #6366f1;
    --success: #22c55e;
    --error: #ef4444;
    --warning: #f59e0b;
    --card-bg: #374151;
    --card-border: #4b5563;
    --input-bg: #4b5563;
    --input-border: #6b7280;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
}

html {
    scroll-behavior: smooth;
    overflow-x: hidden;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color 0.3s, color 0.3s;
    padding-bottom: 80px;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.header-content {
    flex: 1;
}

.header-content h1 {
    margin-bottom: 1rem;
}

.header-content p {
    margin-top: 0.5rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.header-icon {
    display: inline-block;
    width: 1.5em;
    height: 1.5em;
    vertical-align: middle;
    margin-right: 0.5em;
}

.settings-toggle {
    background: none;
    border: none;
    color: var(--text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: background-color 0.3s;
}

.settings-toggle:hover {
    background: var(--bg-secondary);
}

.card {
    background: var(--card-bg);
    border-radius: 1rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--card-border);
    overflow: hidden;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.card-header {
    padding: 1rem;
    border-bottom: 1px solid var(--card-border);
}

.card-body {
    padding: 1.5rem;
}

.tabs {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem;
    background: var(--bg-secondary);
    border-radius: 0.75rem;
    flex-wrap: wrap;
}

.tab-btn {
    flex: 1;
    min-width: 150px;
    padding: 0.75rem 1rem;
    border: none;
    background: none;
    color: var(--text-secondary);
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s;
}

.tab-btn:hover {
    color: var(--accent-primary);
    background: var(--card-bg);
}

.tab-btn.active {
    background: var(--accent-primary);
    color: white;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
}

.form-group input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-primary);
    border-radius: 0.5rem;
    transition: all 0.3s;
    font-size: 0.875rem;
}

.form-group input::placeholder {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.1);
}

.search-container {
    position: relative;
    margin-bottom: 1.5rem;
}

.search-input {
    width: 100%;
    padding: 0.75rem 1rem 0.75rem 2.75rem;
    border: 1px solid var(--input-border);
    background: var(--input-bg);
    color: var(--text-primary);
    border-radius: 0.5rem;
    transition: all 0.3s;
    font-size: 0.95rem;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.1);
}

.search-input::placeholder {
    color: var(--text-secondary);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
    font-size: 1rem;
    pointer-events: none;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s;
    white-space: nowrap;
}

.btn-primary {
    background: var(--accent-primary);
    color: white;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-danger {
    background: var(--error);
    color: white;
}

.btn-danger:hover {
    opacity: 0.9;
}

.btn-warning {
    background: var(--warning);
    color: white;
}

.btn-warning:hover {
    opacity: 0.9;
}

.btn-info {
    background: #3b82f6;
    color: white;
}

.btn-info:hover {
    background: #2563eb;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.ip-list {
    display: grid;
    gap: 1rem;
    margin-top: 18px;
}

.ip-item {
    background: var(--bg-secondary);
    padding: 1rem;
    border-radius: 0.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    cursor: pointer;
    transition: all 0.3s ease;
    border: 2px solid transparent;
}

.ip-item:hover {
    background: #1a202c;
}

.ip-item.selected {
    border: 1px solid var(--accent-primary);
    transform: translateY(-1px);
}

.ip-info {
    display: grid;
    gap: 0.25rem;
    flex: 1;
    min-width: 200px;
    overflow: hidden;
}

.ip-address {
    font-weight: 500;
    word-break: break-word;
    overflow-wrap: break-word;
    font-family: monospace;
    font-size: 1.1rem;
}

.ip-meta {
    color: var(--text-secondary);
    font-size: 0.875rem;
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    align-items: center;
    word-break: break-word;
}

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: 0.35rem;
    font-size: 0.75rem;
    font-weight: 600;
}

.status-badge.active {
    background: rgba(34, 197, 94, 0.2);
    color: #22c55e;
}

.status-badge.expired {
    background: rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

.actions {
    display: flex;
    gap: 0.5rem;
    flex-wrap: nowrap;
    flex-shrink: 0;
}

.loader {
    display: none;
    text-align: center;
    margin: 2rem 0;
}

.loader-spinner {
    border: 4px solid rgba(129, 140, 248, 0.1);
    border-left-color: var(--accent-primary);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

.loading-text, .no-ips, .error-text {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

.error-text {
    color: var(--error);
}

.toast {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 1rem 2rem;
    border-radius: 0.5rem;
    color: white;
    font-weight: 500;
    z-index: 1000;
    display: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    min-width: 250px;
    max-width: 90vw;
    width: auto;
    opacity: 1;
    word-wrap: break-word;
    white-space: normal;
    line-height: 1.5;
}

.toast.show {
    display: block;
    animation: slideInRight 0.3s ease forwards;
}

.toast.hide {
    animation: slideOutRight 0.3s ease forwards;
}

.toast.success {
    background: var(--success);
}

.toast.error {
    background: var(--error);
}

.toast.warning {
    background: var(--warning);
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    justify-content: center;
    align-items: center;
    z-index: 1000;
}

.loading-spinner {
    width: 50px;
    height: 50px;
    border: 4px solid #fff;
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

.error-message {
    background: var(--bg-secondary);
    color: var(--error);
    padding: 1rem;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.footer {
    background: var(--bg-secondary);
    padding: 1.5rem 0;
    text-align: center;
    margin-top: 2rem;
    border-top: 1px solid var(--card-border);
}

.copyright {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.header h1 {
    color: var(--accent-primary);
}

.detail-modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.7);
    animation: fadeIn 0.3s ease;
}

.detail-content {
    background-color: var(--card-bg);
    margin: 5% auto;
    padding: 0;
    border-radius: 1rem;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    box-shadow: var(--shadow);
    animation: slideIn 0.3s ease;
    display: flex;
    flex-direction: column;
}

.detail-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--card-border);
    flex-shrink: 0;
}

.detail-header h3 {
    color: var(--text-primary);
    margin: 0;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.close-detail {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: 50%;
    transition: all 0.3s;
}

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

.detail-body {
    padding: 1.5rem;
    overflow-y: auto;
    flex: 1;
}

.detail-row {
    display: flex;
    justify-content: space-between;
    padding: 0.875rem 0;
    border-bottom: 1px solid var(--card-border);
}

.detail-row:last-child {
    border-bottom: none;
}

.detail-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
}

.detail-value {
    color: var(--text-primary);
    font-weight: 500;
    word-break: break-all;
    text-align: right;
    max-width: 60%;
    font-family: monospace;
}

.detail-value-long {
    color: var(--text-primary);
    font-weight: 500;
    text-align: right;
    font-family: monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    max-width: 60%;
}

.install-script-container {
    margin-top: 1rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 0.5rem;
    border: 1px solid var(--card-border);
}

.install-script-label {
    color: var(--text-secondary);
    font-weight: 600;
    font-size: 0.875rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.install-script-box {
    position: relative;
    background: var(--bg-primary);
    padding: 1rem;
    border-radius: 0.5rem;
    border: 1px solid var(--input-border);
    font-family: 'Courier New', monospace;
    font-size: 0.813rem;
    color: var(--text-primary);
    word-wrap: break-word;
    overflow-wrap: break-word;
    line-height: 1.6;
    max-height: 200px;
    overflow-y: auto;
}

.copy-script-btn {
    background: var(--accent-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.875rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    transition: all 0.3s;
    width: 100%;
    margin-top: 1rem;
}

.copy-script-btn:hover {
    background: var(--accent-hover);
}

.copy-script-btn.copied {
    background: var(--success);
}

.script-note {
    margin-top: 0.75rem;
    padding: 0.75rem;
    background: rgba(129, 140, 248, 0.1);
    border-left: 3px solid var(--accent-primary);
    border-radius: 0.35rem;
    font-size: 0.813rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.script-note i {
    color: var(--accent-primary);
    margin-right: 0.5rem;
}

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

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

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@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;
    }
}

.swal-dark-theme {
    border-radius: 1rem !important;
}

.swal-title {
    font-size: 1.5rem !important;
    font-weight: 600 !important;
    margin-bottom: 1rem !important;
}

.swal-html-container {
    margin: 0 !important;
    padding: 0 !important;
}

.edit-ip-form {
    text-align: left;
    padding: 1rem;
}

.form-group-swal {
    margin-bottom: 1.5rem;
}

.form-group-swal label {
    display: block;
    margin-bottom: 0.5rem;
    color: #9ca3af;
    font-weight: 500;
    font-size: 0.875rem;
}

.swal2-input {
    background: #4b5563 !important;
    border: 1px solid #6b7280 !important;
    color: #f3f4f6 !important;
    border-radius: 0.5rem !important;
    padding: 0.75rem 1rem !important;
    font-size: 0.875rem !important;
    width: 100% !important;
    margin: 0 !important;
    box-sizing: border-box !important;
    opacity: 1 !important;
}

.swal2-input:focus {
    border-color: #818cf8 !important;
    box-shadow: 0 0 0 3px rgba(129, 140, 248, 0.1) !important;
    outline: none !important;
    opacity: 1 !important;
}

.swal2-input::placeholder {
    color: #9ca3af !important;
    font-size: 0.75rem !important;
}

.swal-confirm-btn {
    background: #f59e0b !important;
    border: none !important;
    border-radius: 0.5rem !important;
    padding: 0.75rem 1.5rem !important;
    font-weight: 500 !important;
}

.swal-cancel-btn {
    background: #6b7280 !important;
    border: none !important;
    border-radius: 0.5rem !important;
    padding: 0.75rem 1.5rem !important;
    font-weight: 500 !important;
}

.swal-delete-btn {
    background: #ef4444 !important;
    border: none !important;
    border-radius: 0.5rem !important;
    padding: 0.75rem 1.5rem !important;
    font-weight: 500 !important;
}

.delete-confirmation {
    text-align: center;
    padding: 1rem;
}

.warning-icon {
    font-size: 3rem;
    color: #f59e0b;
    margin-bottom: 1rem;
}

.ip-to-delete {
    background: #1f2937;
    padding: 0.75rem;
    border-radius: 0.5rem;
    margin: 1rem 0;
    border: 1px solid #374151;
}

.warning-text {
    color: #fbbf24;
    font-size: 0.875rem;
    margin-top: 1rem;
}

@media (max-width: 768px) {
    body {
        padding-bottom: 60px;
    }

    .header {
        flex-direction: column;
        align-items: stretch;
    }

    .header-actions {
        width: 100%;
        justify-content: flex-end;
    }

    .tabs {
        flex-direction: column;
    }

    .tab-btn {
        width: 100%;
        min-width: auto;
    }

    .detail-content {
        width: 95%;
        margin: 2% auto;
        max-height: 85vh;
        max-width: 95%;
    }

    .detail-body {
        padding: 1rem;
    }

    .card-body {
        padding: 1rem;
    }

    .ip-item {
        flex-direction: column;
        align-items: flex-start;
    }

    .actions {
        width: 100%;
        justify-content: flex-end;
    }

    .form-group input {
        font-size: 0.813rem;
        padding: 0.688rem 0.875rem;
    }

    .form-group input::placeholder {
        font-size: 0.85rem;
    }

    .form-group label {
        font-size: 0.813rem;
    }

    .detail-value {
        max-width: 55%;
        font-size: 0.85rem;
    }

    .ip-info {
        min-width: 100%;
    }
}

@media (max-width: 480px) {
    .form-group input {
        font-size: 0.75rem;
        padding: 0.625rem 0.75rem;
    }

    .form-group input::placeholder {
        font-size: 0.65rem;
    }

    .search-input {
        font-size: 0.813rem;
        padding: 0.625rem 0.875rem 0.625rem 2.5rem;
    }

    .search-icon {
        font-size: 0.875rem;
        left: 0.875rem;
    }

    .btn {
        padding: 0.625rem 1.25rem;
        font-size: 0.875rem;
    }

    .btn-sm {
        padding: 0.45rem 0.85rem;
        font-size: 0.8rem;
    }

    .status-badge {
        font-size: 0.7rem;
        padding: 0.3rem 0.6rem;
    }

    .ip-meta {
        font-size: 0.8rem;
        gap: 0.75rem;
    }

    .ip-address {
        font-size: 0.95rem;
    }

    .toast {
        min-width: 200px;
        font-size: 0.875rem;
        padding: 0.875rem 1.5rem;
        right: 10px;
        top: 10px;
    }

    .detail-label {
        font-size: 0.8rem;
    }

    .detail-value {
        font-size: 0.8rem;
        max-width: 50%;
    }

    .actions {
        gap: 0.4rem;
    }
}

@media (max-width: 360px) {
    .container {
        padding: 0.75rem;
    }

    .card-body {
        padding: 0.875rem;
    }

    .form-group {
        margin-bottom: 1.25rem;
    }

    .header h1 {
        font-size: 1.5rem;
    }

    .header p {
        font-size: 0.813rem;
    }

    .settings-toggle {
        font-size: 1.25rem;
        padding: 0.4rem;
    }
}