/* Modern CSS Reset */
*, *::before, *::after {
    box-sizing: border-box;
}

* {
    margin: 0;
    padding: 0;
}

/* CSS Variables */
:root {
    --primary-color: #ffbf12;
    --primary-hover: #ffa812;
    --secondary-color: #606263;
    --dark-color: #323231;
    --light-color: #f0f2f5;
    --text-light: #ffffff;
    --text-dark: #323231;
    --success-color: #1dbd42;
    --warning-color: #f7d423;
    --danger-color: #dc2232;
    --info-color: #0800ff;
    --border-radius: 8px;
    --shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    --transition: all 0.2s ease;
}

/* Base Styles */
html {
    font-size: 16px;
    line-height: 1.6;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background-color: var(--secondary-color);
    color: var(--text-light);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header */
.header {
    background: var(--primary-color);
    color: var(--text-dark);
    padding: 1rem 0;
    box-shadow: var(--shadow);
}

.header-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.header-logo img {
    max-height: 60px;
    width: auto;
}

.header-title {
    text-align: center;
}

.header-title h1 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: 0.25rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.subtitle {
    font-size: 1rem;
    font-weight: 500;
    opacity: 0.8;
}

/* Main Container */
.main-container {
    flex: 1;
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
    width: 100%;
}

/* User Bar */
.user-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    margin-bottom: 1rem;
}

.user-info {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.username {
    font-weight: 600;
    font-size: 1.1rem;
}

.firewall-name {
    color: var(--primary-color);
    font-weight: 600;
}

.user-actions {
    display: flex;
    gap: 0.5rem;
}

/* Flash Messages */
.flash-messages {
    margin-bottom: 1rem;
}

.alert {
    padding: 0.75rem 1rem;
    margin-bottom: 0.5rem;
    border-radius: var(--border-radius);
    font-weight: 500;
}

.alert-success {
    background-color: var(--success-color);
    color: var(--text-light);
}

.alert-warning {
    background-color: var(--warning-color);
    color: var(--text-dark);
}

.alert-danger {
    background-color: var(--danger-color);
    color: var(--text-light);
}

.alert-key {
    background-color: var(--info-color);
    color: var(--text-light);
}

/* Content Grid */
.content-grid {
    display: grid;
    grid-template-columns: 250px 1fr 250px;
    gap: 1rem;
    min-height: 60vh;
}

@media (max-width: 1200px) {
    .content-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .sidebar-left, .sidebar-right {
        order: 2;
    }
    
    .main-content {
        order: 1;
    }
}

/* Sidebars */
.sidebar-left, .sidebar-right {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 0.75rem;
    height: fit-content;
}

.sidebar-section {
    margin-bottom: 1rem;
}

.section-title {
    color: var(--primary-color);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border-bottom: 2px solid var(--primary-color);
    padding-bottom: 0.5rem;
}

.subsection-title {
    color: var(--primary-color);
    font-size: 1rem;
    font-weight: 600;
    margin: 1rem 0 0.5rem 0;
}

/* Main Content */
.main-content {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 2rem;
    min-height: 400px;
}

/* Buttons */
.btn {
    display: inline-block;
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.8rem;
    line-height: 1;
}

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

.btn-primary {
    background: var(--primary-color);
    color: var(--text-dark);
}

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

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: var(--text-dark);
}

.btn-config {
    background: var(--primary-color);
    color: var(--text-dark);
    margin-bottom: 0.5rem;
}

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

.btn-add {
    background: linear-gradient(135deg, #4bb964, #2d7a3d);
    color: var(--text-light);
}

.btn-add:hover {
    background: linear-gradient(135deg, #5cc975, #4bb964);
}

.btn-delete {
    background: linear-gradient(135deg, #dc2232, #b91c2c);
    color: var(--text-light);
}

.btn-delete:hover {
    background: linear-gradient(135deg, #e53e3e, #dc2232);
}

.btn-delete-small {
    background: var(--danger-color);
    color: var(--text-light);
    padding: 0.25rem 0.5rem;
    font-size: 0.8rem;
    min-width: auto;
}

.btn-snapshot {
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    flex: 1;
}

.btn-snapshot:hover {
    background: var(--primary-color);
    color: var(--text-dark);
}

.full-width {
    width: 100%;
    margin-bottom: 0.5rem;
}

/* Forms */
.form-input, .form-select, .form-file {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: var(--border-radius);
    background: rgba(255, 255, 255, 0.1);
    color: var(--text-light);
    margin-bottom: 0.5rem;
    font-size: 0.9rem;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(255, 191, 18, 0.2);
}

.form-input::placeholder {
    color: rgba(255, 255, 255, 0.6);
}

/* Snapshots */
.snapshots-section {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.snapshot-info {
    font-size: 0.8rem;
    color: rgba(255, 255, 255, 0.7);
    margin: 0.5rem 0;
    line-height: 1.4;
}

.snapshot-list {
    margin: 1rem 0;
}

.snapshot-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.5rem;
}

/* Configuration Display */
.configuration {
    font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
    background: var(--light-color);
    color: var(--text-dark);
    padding: 1rem;
    border-radius: var(--border-radius);
    overflow-x: auto;
    font-size: 0.7rem;
    line-height: 1.4;
}

/* Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table th {
    background: var(--primary-color);
    color: var(--text-dark);
    padding: 1rem;
    font-weight: 600;
    text-align: left;
}

.table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.table tr:hover {
    background: rgba(255, 255, 255, 0.05);
}

.groups_table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.groups_table th {
    background: var(--primary-color);
    color: var(--text-dark);
    padding: 1rem;
    font-weight: 600;
}

.groups_table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

/* Tooltips */
.tooltip {
    position: relative;
    display: inline-block;
}

.tooltip .tooltiptext {
    visibility: hidden;
    background-color: var(--primary-color);
    color: var(--text-dark);
    text-align: center;
    border-radius: var(--border-radius);
    padding: 0.5rem;
    position: absolute;
    z-index: 1000;
    bottom: 125%;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    transition: opacity 0.3s;
    font-size: 0.8rem;
    white-space: nowrap;
}

.tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* Footer */
.footer {
    background: var(--primary-color);
    color: var(--text-dark);
    padding: 2rem 0;
    margin-top: auto;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

.footer-section {
    text-align: center;
}

.footer-center {
    text-align: center;
}

.footer-link {
    color: var(--text-dark);
    text-decoration: none;
}

.footer-logo {
    max-height: 48px;
    width: auto;
}

.github-mark {
    max-height: 40px;
    width: auto;
    margin-left: 0.5rem;
}

.flag-icon {
    width: 40px;
    height: 40px;
    margin: 0.5rem 0;
}

.version {
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.copyright {
    font-size: 0.9rem;
    line-height: 1.4;
}

/* Responsive Design */
@media (max-width: 768px) {
    .header-content {
        grid-template-columns: 1fr;
        gap: 1rem;
        text-align: center;
    }
    
    .user-bar {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .user-actions {
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .main-container {
        padding: 0 0.5rem;
    }
    
    .sidebar-left, .sidebar-right, .main-content {
        padding: 1rem;
    }
}

/* Legacy class compatibility */
.page_background { background-color: var(--secondary-color); }
.section_heading { color: var(--primary-color); font-weight: 600; }
.section_subheading { color: var(--primary-color); font-weight: 600; }
.h3_white { color: var(--text-light); font-weight: 600; }
.h4_dark { color: var(--text-dark); }
.yellow_text { color: var(--primary-color); }
.link { color: var(--primary-color); text-decoration: none; }
.link:hover { color: var(--primary-hover); }
.docs_link { color: var(--primary-color); font-weight: 600; text-decoration: none; }
.docs_link:hover { color: var(--primary-hover); }

/* Chain and Filter specific styles */
.chain_heading, .filter_heading {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.2rem;
    margin: 1rem 0;
}

/* Table of Contents */
#toc_container {
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--border-radius);
    padding: 1rem;
    margin: 1rem 0;
}

.toc_title {
    color: var(--primary-color);
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

#toc_container .link {
    color: var(--primary-color);
    font-weight: 600;
}

#toc_container li, .li, ul {
    color: var(--primary-color);
    list-style: none;
    margin: 0.25rem 0;
}