/* MC Stats Suite - Modern Material Design Theme */

/* ============================================================
   VARIABLES & COLOR PALETTE
   ============================================================ */

:root {
    /* Background Colors - EastMesh Dark Theme */
    --bg-primary: #2b2b2b;
    --bg-secondary: #343434;
    --bg-tertiary: #3d3d3d;
    --bg-elevated: #303030;
    --bg-hover: #444444;

    /* Text Colors - Enhanced Readability */
    --text-primary: #e6ece8;
    --text-secondary: #a9b4ae;
    --text-tertiary: #909d97;
    --text-disabled: #6b7280;

    /* Accent Colors - Emerald */
    --accent-primary: #4aa89a;
    --accent-hover: #3a8a7e;
    --accent-light: #6cc4b6;
    --accent-strong: #0f5f4f;
    --accent-strong-hover: #0c4c40;
    --accent-text-outline: -1px -1px 0 rgba(0, 0, 0, 0.75),
        1px -1px 0 rgba(0, 0, 0, 0.75),
        -1px 1px 0 rgba(0, 0, 0, 0.75),
        1px 1px 0 rgba(0, 0, 0, 0.75);
    --device-key-color: #ffffff;

    /* Packet Type Colors (Consistent Across All Pages) */
    --packet-request: #4e79a7;
    --packet-response: #f28e2b;
    --packet-text-message: #e15759;
    --packet-acknowledgment: #76b7b2;
    --packet-advertisement: #59a14f;
    --packet-group-text: #edc949;
    --packet-group-data: #af7aa1;
    --packet-anonymous-request: #ff9da7;
    --packet-path: #9c755f;
    --packet-trace: #bab0ab;

    /* Status Colors */
    --status-success: #4caf50;
    --status-warning: #ff9800;
    --status-error: #f44336;
    --status-info: #2196f3;

    /* Border & Divider - Better Contrast */
    --border-color: rgba(255, 255, 255, 0.07);
    --border-hover: rgba(255, 255, 255, 0.12);
    --divider-color: rgba(255, 255, 255, 0.05);

    /* Shadows - Enhanced Depth */
    --shadow-sm: 0 3px 10px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.28);
    --shadow-lg: 0 12px 32px rgba(0, 0, 0, 0.35);
    --shadow-xl: 0 18px 44px rgba(0, 0, 0, 0.4);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
}

/* Light Theme */
[data-theme="light"] {
    /* Background Colors - Soft Slate */
    --bg-primary: #f7f8fb;
    --bg-secondary: #eef1f6;
    --bg-tertiary: #e4e9f0;
    --bg-elevated: #ffffff;
    --bg-hover: #dde4ee;

    /* Text Colors - Dark for Light Theme */
    --text-primary: #0f172a;
    --text-secondary: #364153;
    --text-tertiary: #506075;
    --text-disabled: #94a3b8;

    /* Accent Colors - Emerald */
    --accent-primary: #1aa592;
    --accent-hover: #148374;
    --accent-light: #3ec2b1;
    --accent-strong: #0f6a57;
    --accent-strong-hover: #0c5446;
    --device-key-color: #000000;

    /* Packet Type Colors - Keep same for consistency */
    /* These work well on both light and dark backgrounds */

    /* Status Colors - Keep same */

    /* Border & Divider - Light Theme */
    --border-color: #d3dbe6;
    --border-hover: #bcc7d8;
    --divider-color: #e3e8f0;

    /* Shadows - Softer for Light Theme */
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.1);
    --shadow-md: 0 4px 10px rgba(15, 23, 42, 0.12);
    --shadow-lg: 0 12px 20px rgba(15, 23, 42, 0.14);
    --shadow-xl: 0 20px 28px rgba(15, 23, 42, 0.18);
}

/* ============================================================
   RESET & BASE STYLES
   ============================================================ */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', 'Source Sans 3', 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto',
        'Helvetica Neue', Arial, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */

.app-header {
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.02) 0%, transparent 70%),
        var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    padding: var(--spacing-lg) var(--spacing-2xl);
    display: flex;
    align-items: center;
    gap: var(--spacing-2xl);
}

.theme-toggle-container {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    margin-left: auto;
    gap: var(--spacing-sm);
}

.header-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    text-decoration: none;
    flex-shrink: 0;
}

.brand-icon {
    width: 40px;
    height: 40px;
    background: transparent;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 20px;
    font-weight: bold;
    color: white;
    box-shadow: none;
    position: relative;
    overflow: hidden;
}

.brand-logo-img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    display: block;
}

.brand-logo-text {
    display: none;
    width: 100%;
    height: 100%;
    align-items: center;
    justify-content: center;
}

.brand-text h1 {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.brand-text .subtitle {
    font-size: 12px;
    color: var(--text-tertiary);
    font-weight: 400;
}

.header-nav {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: nowrap;
    margin-left: var(--spacing-2xl);
    white-space: nowrap;
}

.nav-link {
    padding: 12px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-md);
    font-size: 15px;
    font-weight: 500;
    transition: all var(--transition-normal);
    position: relative;
    border: 1px solid transparent;
}

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

.nav-link.active {
    background: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
    box-shadow: 0 3px 10px rgba(59, 130, 246, 0.24);
}

.nav-link.active::after {
    display: none;
}

/* Theme Toggle Switch */
.theme-toggle-checkbox {
    display: none;
}

.theme-toggle-label {
    display: inline-block;
    width: 56px;
    height: 30px;
    background-color: var(--bg-elevated);
    border: 2px solid var(--border-color);
    border-radius: 30px;
    position: relative;
    cursor: pointer;
    transition: all 0.3s ease;
}

.theme-toggle-label:after {
    content: '';
    position: absolute;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background-color: var(--text-tertiary);
    top: 2px;
    left: 2px;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-sm);
}

.theme-toggle-label:hover {
    border-color: var(--accent-primary);
}

/* Checked state - light theme */
.theme-toggle-checkbox:checked + .theme-toggle-label {
    background-color: var(--accent-primary);
    border-color: var(--accent-primary);
}

.theme-toggle-checkbox:checked + .theme-toggle-label:after {
    transform: translateX(26px);
    background-color: white;
}

.packet-indicator {
    width: 10px;
    height: 10px;
    border-radius: 999px;
    background: #4caf50;
    opacity: 0.3;
}

.packet-indicator.active {
    opacity: 1;
    animation: packetPulse 1.4s ease-in-out;
    box-shadow: 0 0 8px rgba(76, 175, 80, 0.6);
}

@keyframes packetPulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.4); }
}

/* ============================================================
   MAIN CONTENT AREA
   ============================================================ */

.app-main {
    flex: 1;
    max-width: 1600px;
    width: 100%;
    margin: 0 auto;
    padding: var(--spacing-lg);
    padding-top: 140px; /* Height of fixed header + safe padding */
}

/* ============================================================
   CARDS
   ============================================================ */

.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal),
        background var(--transition-normal);
}

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

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--divider-color);
}

.card-title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.card-subtitle {
    font-size: 14px;
    color: var(--text-tertiary);
    margin-top: var(--spacing-xs);
}

.card-body {
    color: var(--text-secondary);
}

/* ============================================================
   STATS GRID
   ============================================================ */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

.stat-card {
    background: var(--bg-elevated);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    text-align: center;
    transition: all var(--transition-normal);
    cursor: default;
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--accent-primary);
}

.stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-primary);
    text-shadow: var(--accent-text-outline);
    margin-bottom: var(--spacing-xs);
    font-variant-numeric: tabular-nums;
}

.stat-label {
    font-size: 14px;
    color: var(--text-tertiary);
    text-transform: none;
    letter-spacing: 0.2px;
    font-weight: 600;
}

.stat-change {
    font-size: 12px;
    margin-top: var(--spacing-xs);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.stat-change.positive {
    color: var(--status-success);
}

.stat-change.negative {
    color: var(--status-error);
}

/* ============================================================
   TABLES
   ============================================================ */

.table-container {
    overflow-x: auto;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    -webkit-overflow-scrolling: touch;
    margin: 0;
    width: 100%;
}

/* Scrollbar styling for table container */
.table-container::-webkit-scrollbar {
    height: 8px;
}

.table-container::-webkit-scrollbar-track {
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
}

.table-container::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: var(--radius-sm);
}

.table-container::-webkit-scrollbar-thumb:hover {
    background: var(--border-hover);
}

table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-secondary);
}

thead {
    background: var(--bg-tertiary);
    border-bottom: 2px solid var(--border-color);
}

th {
    padding: 12px 16px;
    text-align: left;
    font-size: 13px;
    font-weight: 600;
    color: var(--text-primary);
    text-transform: none;
    letter-spacing: 0.2px;
    user-select: none;
    white-space: nowrap;
}

th.sortable {
    cursor: pointer;
    transition: background var(--transition-fast);
}

th.sortable:hover {
    background: var(--bg-hover);
}

th.sortable::after {
    content: ' ⇅';
    color: var(--text-disabled);
    font-size: 11px;
}

th.sort-asc::after {
    content: ' ▲';
    color: var(--accent-primary);
    text-shadow: var(--accent-text-outline);
}

th.sort-desc::after {
    content: ' ▼';
    color: var(--accent-primary);
    text-shadow: var(--accent-text-outline);
}

td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--divider-color);
    font-size: 14px;
    color: var(--text-secondary);
}

tbody tr {
    transition: background var(--transition-fast);
}

tbody tr:hover {
    background: var(--bg-tertiary);
}

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

tfoot {
    background: var(--bg-tertiary);
    border-top: 2px solid var(--border-color);
    font-weight: 600;
}

/* ============================================================
   BUTTONS & CONTROLS
   ============================================================ */

.btn {
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    text-decoration: none;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn:hover {
    background: var(--bg-hover);
    box-shadow: var(--shadow-sm);
}

.btn:active {
    transform: translateY(0);
}

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

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

.btn-group {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.btn-group .btn {
    border-radius: 0;
}

.btn-group .btn:first-child {
    border-radius: var(--radius-sm) 0 0 var(--radius-sm);
}

.btn-group .btn:last-child {
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

.btn.active {
    background: var(--accent-strong);
    color: white;
    border-color: var(--accent-strong);
}

/* Range Buttons (Time Span Selection) */
.range-tabs {
    margin-bottom: var(--spacing-lg);
}

.range-button {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-md);
    margin-right: var(--spacing-xs);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    transition: all var(--transition-fast);
}

.range-button:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
    border-color: var(--border-hover);
}

.range-button.active {
    background: var(--accent-strong);
    border-color: var(--accent-strong);
    color: white;
    font-weight: 600;
    box-shadow: 0 2px 6px rgba(15, 95, 79, 0.3);
}

/* ============================================================
   FORM CONTROLS
   ============================================================ */

.form-group {
    margin-bottom: var(--spacing-md);
}

label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: 14px;
    font-weight: 500;
    color: var(--text-secondary);
}

input[type="text"],
input[type="search"],
select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 14px;
    transition: all var(--transition-fast);
}

input:focus,
select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

input::placeholder {
    color: var(--text-disabled);
}

/* ============================================================
   BADGES & LABELS
   ============================================================ */

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 500;
    line-height: 1.4;
}

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

.badge-success {
    background: var(--status-success);
    color: white;
}

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

.badge-error {
    background: var(--status-error);
    color: white;
}

.badge-info {
    background: var(--status-info);
    color: white;
}

/* ============================================================
   PACKET TYPE COLORS (CONSISTENT)
   ============================================================ */

.packet-request { background: var(--packet-request); color: white; }
.packet-response { background: var(--packet-response); color: white; }
.packet-text-message { background: var(--packet-text-message); color: white; }
.packet-acknowledgment { background: var(--packet-acknowledgment); color: white; }
.packet-advertisement { background: var(--packet-advertisement); color: white; }
.packet-group-text { background: var(--packet-group-text); color: #111; }
.packet-group-data { background: var(--packet-group-data); color: white; }
.packet-anonymous-request { background: var(--packet-anonymous-request); color: #111; }
.packet-path { background: var(--packet-path); color: white; }
.packet-trace { background: var(--packet-trace); color: #111; }

/* ============================================================
   UTILITIES
   ============================================================ */

.text-center { text-align: center; }
.text-right { text-align: right; }
.text-muted { color: var(--text-tertiary); }
.text-small { font-size: 12px; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--spacing-sm); }
.gap-2 { gap: var(--spacing-md); }

.monospace {
    font-family: 'Courier New', 'Consolas', monospace;
    font-size: 13px;
}

/* ============================================================
   LOADING & EMPTY STATES
   ============================================================ */

.loading {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-tertiary);
}

.loading::after {
    content: '...';
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0%, 20% { content: '.'; }
    40% { content: '..'; }
    60%, 100% { content: '...'; }
}

.empty-state {
    text-align: center;
    padding: var(--spacing-2xl);
    color: var(--text-tertiary);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: var(--spacing-md);
    opacity: 0.3;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

@media (max-width: 768px) {
    .app-header {
        padding: var(--spacing-sm) var(--spacing-md);
        flex-wrap: wrap;
    }

    .header-brand {
        order: 1;
    }

    .theme-toggle-container {
        order: 2;
        margin-left: auto;
    }

    .header-nav {
        order: 3;
        width: 100%;
        margin-top: var(--spacing-xs);
        margin-left: 0;
        display: flex;
        justify-content: flex-start;
        gap: var(--spacing-xs);
        flex-wrap: nowrap;
        overflow-x: auto;
    }

    .brand-icon {
        display: none;
    }

    .brand-text h1 {
        font-size: 14px;
    }

    .brand-text .subtitle {
        display: none;
    }

    .theme-toggle-label {
        width: 52px;
        height: 28px;
    }

    .theme-toggle-label:after {
        width: 20px;
        height: 20px;
    }

    .theme-toggle-checkbox:checked + .theme-toggle-label:after {
        transform: translateX(24px);
    }

    .nav-link {
        padding: 8px 12px;
        font-size: 13px;
        flex: 1;
        text-align: center;
    }

    .app-main {
        padding: var(--spacing-md);
        padding-top: calc(120px + var(--spacing-md)); /* Smaller header on mobile */
    }

    .stats-grid {
        grid-template-columns: 1fr;
    }

    .table-container {
        overflow-x: auto;
    }

    th, td {
        padding: var(--spacing-sm);
    }

    .card {
        padding: var(--spacing-md);
    }

    .card-header {
        margin-bottom: var(--spacing-sm);
        padding-bottom: var(--spacing-sm);
    }

    .card-title {
        font-size: 16px;
    }

.card-subtitle {
    font-size: 12px;
}

    /* Ensure range buttons don't wrap awkwardly on mobile */
    .range-button {
        font-size: 12px;
        padding: 6px 10px;
    }
}

/* ============================================================
   SCROLLBAR STYLING
   ============================================================ */

::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    border: 2px solid var(--bg-primary);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--bg-hover);
}