:root {
    --bg-main: #0B0F19;
    --bg-card: rgba(20, 26, 42, 0.65);
    --bg-card-hover: rgba(26, 35, 57, 0.8);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-glow: rgba(0, 242, 254, 0.15);
    
    --primary-gradient: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --secondary-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --danger-gradient: linear-gradient(135deg, #ff0844 0%, #ffb199 100%);
    --success-gradient: linear-gradient(135deg, #0ba360 0%, #3cba92 100%);
    
    --text-primary: #FFFFFF;
    --text-secondary: #94A3B8;
    --text-muted: #64748B;
    
    --success: #10B981;
    --warning: #F59E0B;
    --danger: #EF4444;
    --info: #06B6D4;
    
    --font-sans: 'Outfit', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --shadow-main: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
}

/* Header */
.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem 2.5rem;
    background: rgba(11, 15, 25, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    width: 28px;
    height: 28px;
    border-radius: 8px;
    background: var(--primary-gradient);
    position: relative;
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.4);
}

.logo-icon::after {
    content: '';
    position: absolute;
    top: 25%;
    left: 25%;
    width: 50%;
    height: 50%;
    background: var(--bg-main);
    border-radius: 4px;
}

.logo-text {
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: 2px;
}

.logo-text .highlight {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 1.5rem;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: var(--transition-smooth);
    border: 1px solid transparent;
}

.nav-item:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.nav-item.active {
    color: #00f2fe;
    background: rgba(0, 242, 254, 0.08);
    border-color: rgba(0, 242, 254, 0.2);
}

.badge {
    padding: 0.35rem 0.75rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 600;
}

.badge.online {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.3);
    position: relative;
    padding-left: 1.5rem;
}

.badge.online::before {
    content: '';
    position: absolute;
    left: 0.5rem;
    top: 50%;
    transform: translateY(-50%);
    width: 6px;
    height: 6px;
    background: var(--success);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--success);
}

/* Main Layout */
.app-main {
    flex: 1;
    padding: 2.5rem;
    max-width: 1600px;
    margin: 0 auto;
    width: 100%;
}

/* Footer */
.app-footer {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
    border-top: 1px solid var(--border-color);
}

/* Cards & Glassmorphism */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow-main);
    transition: var(--transition-smooth);
}

.glass-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-glow);
    box-shadow: 0 10px 40px rgba(0, 242, 254, 0.05);
    transform: translateY(-2px);
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2.5rem;
}

.metric-card {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.metric-icon {
    opacity: 0.8;
}

.metric-value {
    font-size: 2rem;
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
}

.metric-bar-container {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
    margin-top: 0.25rem;
}

.metric-bar {
    height: 100%;
    border-radius: 3px;
    transition: width 0.6s ease;
    background: var(--primary-gradient);
}

.metric-subtext {
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Dashboard Grid Layout */
.dashboard-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 1.5rem;
}

@media (max-width: 1024px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
}

.card-title-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
}

.btn-primary {
    background: var(--primary-gradient);
    color: #000;
    box-shadow: 0 4px 15px rgba(0, 242, 254, 0.25);
}

.btn-primary:hover {
    box-shadow: 0 4px 20px rgba(0, 242, 254, 0.45);
    transform: scale(1.02);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.1);
}

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

.btn-danger:hover {
    transform: scale(1.02);
}

/* Custom Table */
.table-wrapper {
    overflow-x: auto;
    border-radius: 12px;
    border: 1px solid var(--border-color);
}

.custom-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.custom-table th {
    background: rgba(255, 255, 255, 0.02);
    padding: 1rem;
    color: var(--text-secondary);
    font-weight: 600;
    border-bottom: 1px solid var(--border-color);
}

.custom-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-primary);
}

.custom-table tbody tr:last-child td {
    border-bottom: none;
}

.custom-table tbody tr {
    transition: var(--transition-smooth);
}

.custom-table tbody tr:hover {
    background: rgba(255, 255, 255, 0.02);
}

/* Badges for endpoints status */
.status-pill {
    padding: 0.25rem 0.5rem;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.status-pill.active {
    background: rgba(16, 185, 129, 0.15);
    color: var(--success);
}

.status-pill.degraded {
    background: rgba(245, 158, 11, 0.15);
    color: var(--warning);
}

.status-pill.inactive {
    background: rgba(239, 68, 68, 0.15);
    color: var(--danger);
}

.status-indicator-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
}

.status-pill.active .status-indicator-dot { background: var(--success); }
.status-pill.degraded .status-indicator-dot { background: var(--warning); }
.status-pill.inactive .status-indicator-dot { background: var(--danger); }

/* Table Action buttons */
.action-group {
    display: flex;
    gap: 0.5rem;
}

.btn-icon {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: var(--transition-smooth);
}

.btn-icon:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.05);
}

.btn-icon.delete:hover {
    color: var(--danger);
}

/* Sidebar Column Components */
.sidebar-panel {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Logs and Keys Panels */
.logs-console {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    background: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1rem;
    height: 250px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.log-line {
    display: flex;
    gap: 0.75rem;
}

.log-time {
    color: var(--text-muted);
    min-width: 65px;
}

.log-level {
    font-weight: 700;
    min-width: 45px;
}

.log-level.INFO { color: var(--info); }
.log-level.WARN { color: var(--warning); }
.log-level.ERROR { color: var(--danger); }

.log-msg {
    color: var(--text-secondary);
    white-space: pre-wrap;
    word-break: break-all;
}

/* Modal Overlay & Modal Box */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(5, 7, 12, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 1000;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition-smooth);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-box {
    background: #111827;
    border: 1px solid var(--border-color);
    border-radius: 16px;
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    box-shadow: 0 20px 50px rgba(0,0,0,0.5);
    transform: translateY(20px);
    transition: var(--transition-smooth);
}

.modal-overlay.open .modal-box {
    transform: translateY(0);
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.modal-title {
    font-size: 1.25rem;
    font-weight: 600;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-bottom: 1.25rem;
}

.form-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.form-input {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.65rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

.form-input:focus {
    outline: none;
    border-color: #00f2fe;
    background: rgba(255, 255, 255, 0.05);
}

.form-select {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.65rem 1rem;
    color: var(--text-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    transition: var(--transition-smooth);
}

.form-select:focus {
    outline: none;
    border-color: #00f2fe;
}

.form-select option {
    background: #111827;
    color: var(--text-primary);
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 0.75rem;
    margin-top: 2rem;
}

/* API Key list design */
.key-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.key-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.key-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.key-name {
    font-size: 0.9rem;
    font-weight: 500;
}

.key-val {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.key-date {
    font-size: 0.7rem;
    color: var(--text-muted);
}

/* API Docs Styling */
.docs-layout {
    display: grid;
    grid-template-columns: 250px 1fr;
    gap: 2rem;
}

@media (max-width: 768px) {
    .docs-layout {
        grid-template-columns: 1fr;
    }
}

.docs-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    position: sticky;
    top: 80px;
    height: fit-content;
}

.docs-nav-link {
    padding: 0.5rem 1rem;
    border-radius: 6px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: var(--transition-smooth);
    border-left: 2px solid transparent;
}

.docs-nav-link:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.02);
}

.docs-nav-link.active {
    color: #00f2fe;
    border-left-color: #00f2fe;
    background: rgba(0, 242, 254, 0.05);
}

.docs-section {
    margin-bottom: 3rem;
}

.docs-section h2 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.endpoint-block {
    border: 1px solid var(--border-color);
    border-radius: 12px;
    margin-bottom: 1.5rem;
    overflow: hidden;
}

.endpoint-header {
    padding: 0.75rem 1.25rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    background: rgba(255,255,255,0.01);
    font-family: var(--font-mono);
    font-size: 0.9rem;
    cursor: pointer;
}

.method-badge {
    padding: 0.25rem 0.5rem;
    border-radius: 4px;
    font-weight: 700;
    font-size: 0.75rem;
}

.method-badge.get { background: rgba(6, 182, 212, 0.15); color: var(--info); }
.method-badge.post { background: rgba(16, 185, 129, 0.15); color: var(--success); }
.method-badge.put { background: rgba(245, 158, 11, 0.15); color: var(--warning); }
.method-badge.delete { background: rgba(239, 68, 68, 0.15); color: var(--danger); }

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

.endpoint-body {
    padding: 1.25rem;
    background: rgba(0,0,0,0.15);
    border-top: 1px solid var(--border-color);
}

.code-block {
    background: rgba(0, 0, 0, 0.4);
    border: 1px solid rgba(255,255,255,0.05);
    border-radius: 8px;
    padding: 1rem;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #e2e8f0;
    overflow-x: auto;
    margin-top: 0.75rem;
}

.param-table {
    width: 100%;
    margin-top: 1rem;
    font-size: 0.85rem;
    border-collapse: collapse;
}

.param-table th, .param-table td {
    padding: 0.5rem 0;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.param-name {
    font-family: var(--font-mono);
    color: #00f2fe;
    font-weight: 500;
}

.param-type {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-left: 0.5rem;
}

/* ==========================================================================
   📱 Responsive Mobile Custom Adjustments
   ========================================================================== */

/* 1. Header and Page Spacing (Screens <= 768px) */
@media (max-width: 768px) {
    .app-header {
        flex-direction: column;
        gap: 1rem;
        padding: 1.25rem 1rem;
        text-align: center;
    }
    
    .nav-links {
        width: 100%;
        justify-content: center;
        gap: 0.5rem;
    }
    
    .nav-item {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
    
    .app-main {
        padding: 1.25rem 1rem;
    }
    
    .card-title-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
    
    .card-title-row .btn {
        width: 100%;
        justify-content: center;
    }

    /* Prevent Grid container stretching due to long code strings */
    .docs-content {
        min-width: 0;
    }

    /* Enable scroll & wrap on mobile code elements to prevent layout breaking */
    .code-block {
        max-width: 100%;
        overflow-x: auto;
    }

    .code-block pre {
        white-space: pre-wrap;
        word-break: break-all;
    }
}

/* 2. Metrics Grid Layout Adjustments (Screens <= 480px) */
@media (max-width: 480px) {
    .metrics-grid {
        grid-template-columns: 1fr;
        gap: 1rem;
        margin-bottom: 1.5rem;
    }
    
    .metric-value {
        font-size: 1.75rem;
    }
}

/* 3. Table Responsive Block Layout (Screens <= 640px) */
@media (max-width: 640px) {
    .custom-table, 
    .custom-table thead, 
    .custom-table tbody, 
    .custom-table th, 
    .custom-table td, 
    .custom-table tr {
        display: block;
    }
    
    .custom-table thead {
        display: none; /* Hide header row */
    }
    
    .custom-table tr {
        margin-bottom: 1rem;
        border: 1px solid var(--border-color);
        border-radius: 12px;
        background: rgba(255, 255, 255, 0.01);
        padding: 0.5rem;
    }
    
    .custom-table td {
        border-bottom: 1px solid rgba(255, 255, 255, 0.04);
        padding: 0.75rem 0.5rem 0.75rem 45%;
        position: relative;
        text-align: right;
        min-height: 2.75rem;
        white-space: normal;
        word-break: break-all;
    }
    
    .custom-table td::before {
        content: attr(data-label);
        position: absolute;
        left: 0.5rem;
        top: 50%;
        transform: translateY(-50%);
        width: 35%;
        text-align: left;
        font-weight: 600;
        color: var(--text-secondary);
        font-size: 0.8rem;
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    
    .custom-table td:last-child {
        border-bottom: none;
    }
    
    .action-group {
        justify-content: flex-end;
    }
}

/* 4. Modal Window Responsive Settings (Screens <= 480px) */
@media (max-width: 480px) {
    .modal-box {
        padding: 1.25rem;
        margin: 1rem;
        border-radius: 12px;
        width: calc(100% - 2rem);
    }
    
    .modal-footer {
        flex-direction: column-reverse;
        gap: 0.5rem;
    }
    
    .modal-footer .btn {
        width: 100%;
        justify-content: center;
    }
}