/* ============================================================
   SymlexVPN Automation Panel — Design System v2.0
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

/* ============================================================
   CSS Custom Properties — Dark Theme (default)
   ============================================================ */
:root {
    /* Backgrounds */
    --bg-base:        #0d0d14;
    --bg-surface:     #12121e;
    --bg-elevated:    #1a1a2e;
    --bg-card:        rgba(22, 22, 38, 0.85);
    --bg-input:       #0f0f1a;
    --bg-terminal:    #0a0a0f;

    /* Borders */
    --border:         rgba(99, 102, 241, 0.18);
    --border-hover:   rgba(99, 102, 241, 0.40);
    --border-focus:   rgba(99, 102, 241, 0.70);

    /* Text */
    --text-primary:   #e2e8f0;
    --text-secondary: #94a3b8;
    --text-muted:     #4a5568;
    --text-heading:   #f0f4ff;

    /* Accent / Brand */
    --accent-cyan:    #06b6d4;
    --accent-purple:  #8b5cf6;
    --accent-indigo:  #6366f1;
    --accent-glow:    rgba(6, 182, 212, 0.25);

    /* Status */
    --color-success:  #10b981;
    --color-error:    #ef4444;
    --color-warning:  #f59e0b;
    --color-info:     #06b6d4;

    /* Protocol Colors */
    --proto-openvpn-color:      #3b82f6;
    --proto-openconnect-color:  #f97316;
    --proto-wireguard-color:    #06b6d4;
    --proto-dns-color:          #a855f7;
    --proto-monitoring-color:   #10b981;
    --proto-adblock-color:      #f59e0b;
    --proto-vless-color:        #8b5cf6;
    --proto-vmess-color:        #6366f1;
    --proto-trojan-color:       #ef4444;
    --proto-hysteria-color:     #eab308;
    --proto-shadowsocks-color:  #14b8a6;

    /* Spacing & Shape */
    --radius-sm:   6px;
    --radius-md:   10px;
    --radius-lg:   16px;
    --radius-xl:   22px;

    /* Transitions */
    --transition:  all 0.22s cubic-bezier(0.4, 0, 0.2, 1);

    /* Navbar */
    --navbar-bg:   rgba(13, 13, 20, 0.92);
    --navbar-h:    64px;
}

/* ============================================================
   Light Theme Overrides
   ============================================================ */
[data-theme="light"] {
    --bg-base:       #f1f5f9;
    --bg-surface:    #ffffff;
    --bg-elevated:   #f8fafc;
    --bg-card:       rgba(255, 255, 255, 0.92);
    --bg-input:      #f1f5f9;
    --bg-terminal:   #1e1e2e;

    --border:        rgba(99, 102, 241, 0.18);
    --border-hover:  rgba(99, 102, 241, 0.35);
    --border-focus:  rgba(99, 102, 241, 0.60);

    --text-primary:  #1e293b;
    --text-secondary:#475569;
    --text-muted:    #94a3b8;
    --text-heading:  #0f172a;

    --accent-glow:   rgba(6, 182, 212, 0.12);

    --navbar-bg:     rgba(255, 255, 255, 0.92);
}

/* ============================================================
   Reset & Base
   ============================================================ */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 15px;
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    background-color: var(--bg-base);
    color: var(--text-primary);
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Dark mode grid pattern */
body::before {
    content: '';
    position: fixed;
    inset: 0;
    background-image:
        linear-gradient(rgba(99, 102, 241, 0.04) 1px, transparent 1px),
        linear-gradient(90deg, rgba(99, 102, 241, 0.04) 1px, transparent 1px);
    background-size: 40px 40px;
    pointer-events: none;
    z-index: 0;
    opacity: 1;
    transition: opacity 0.3s ease;
}

[data-theme="light"] body::before {
    opacity: 0;
}

/* ============================================================
   Scrollbar
   ============================================================ */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-hover);
    border-radius: 99px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-indigo);
}

/* ============================================================
   Navbar
   ============================================================ */
.app-navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--navbar-h);
    background: var(--navbar-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 24px;
    gap: 20px;
    transition: var(--transition);
}

.navbar-brand-area {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    flex-shrink: 0;
}

.navbar-brand-area img {
    height: 40px;
    width: auto;
    object-fit: contain;
}

.navbar-brand-text {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-heading);
    letter-spacing: -0.01em;
    white-space: nowrap;
}

.navbar-links {
    display: flex;
    align-items: center;
    gap: 2px;
    flex: 1;
    list-style: none;
    overflow-x: auto;
    -ms-overflow-style: none;
    scrollbar-width: none;
}
.navbar-links::-webkit-scrollbar { display: none; }

.nav-link-item {
    position: relative;
    white-space: nowrap;
}

.nav-link-item a {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 7px 12px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.85rem;
    font-weight: 500;
    transition: var(--transition);
    letter-spacing: 0.01em;
}

.nav-link-item a i {
    font-size: 0.8rem;
    opacity: 0.8;
}

.nav-link-item a:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--text-primary);
}

.nav-link-item.active a,
.nav-link-item a.active {
    background: rgba(99, 102, 241, 0.15);
    color: var(--accent-indigo);
    font-weight: 600;
}

.nav-link-item a.nav-logout {
    color: var(--color-error);
}
.nav-link-item a.nav-logout:hover {
    background: rgba(239, 68, 68, 0.1);
}

/* Theme Toggle */
.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
    flex-shrink: 0;
    font-size: 0.9rem;
}

.theme-toggle-btn:hover {
    background: rgba(99, 102, 241, 0.1);
    color: var(--accent-cyan);
    border-color: var(--border-hover);
}

/* ============================================================
   Main Layout
   ============================================================ */
.app-main {
    position: relative;
    z-index: 1;
    padding: 20px 24px 24px;
    min-height: calc(100vh - var(--navbar-h));
}

.installer-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 20px;
    max-width: 1600px;
    margin: 0 auto;
}

@media (max-width: 1100px) {
    .installer-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================================
   Card Panel
   ============================================================ */
.card-panel {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    overflow: hidden;
    transition: border-color 0.25s ease;
    display: flex;
    flex-direction: column;
}

.card-panel:hover {
    border-color: var(--border-hover);
}

.card-header-bar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 18px;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.card-title {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-heading);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-title i {
    color: var(--accent-cyan);
}

.card-body-inner {
    padding: 18px;
    flex: 1;
    overflow-y: auto;
}

/* ============================================================
   Installer Tabs (VPN Stack / Sing-box)
   ============================================================ */
.installer-tabs {
    display: flex;
    gap: 6px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: 4px;
    margin-bottom: 20px;
}

.installer-tab {
    flex: 1;
    padding: 9px 16px;
    border: none;
    border-radius: var(--radius-md);
    background: transparent;
    color: var(--text-secondary);
    font-family: inherit;
    font-size: 0.84rem;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    white-space: nowrap;
}

.installer-tab:hover {
    color: var(--text-primary);
    background: rgba(99, 102, 241, 0.08);
}

.installer-tab.active {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    color: #fff;
    font-weight: 600;
    box-shadow: 0 2px 12px rgba(99, 102, 241, 0.35);
}


.installer-tab:disabled,
.installer-tab.disabled {
    opacity: 0.45;
    cursor: not-allowed;
    pointer-events: none;
}

.tab-soon-badge {
    display: inline-block;
    padding: 1px 6px;
    font-size: 0.64rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    background: rgba(99, 102, 241, 0.22);
    color: var(--accent-purple);
    border-radius: 4px;
    margin-left: 2px;
}

.installer-tab-content {
    display: none;
}

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

/* ============================================================
   Protocol Grid & Cards
   ============================================================ */
.form-section-title {
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--text-muted);
    margin-bottom: 10px;
}

.protocol-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
    gap: 10px;
    margin-bottom: 20px;
}

.protocol-card {
    position: relative;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 14px 10px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    cursor: pointer;
    transition: var(--transition);
    user-select: none;
    text-align: center;
    overflow: hidden;
    --protocol-color: var(--accent-indigo);
}

.protocol-card:hover {
    border-color: var(--protocol-color);
    background: color-mix(in srgb, var(--protocol-color) 8%, var(--bg-elevated));
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0,0,0,0.2);
}

.protocol-card.selected {
    border-color: var(--protocol-color);
    background: color-mix(in srgb, var(--protocol-color) 14%, var(--bg-elevated));
    box-shadow: 0 0 0 1px var(--protocol-color), 0 6px 24px color-mix(in srgb, var(--protocol-color) 30%, transparent);
}

.protocol-card.selected::after {
    content: '\f00c';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    position: absolute;
    top: 6px;
    right: 8px;
    font-size: 0.65rem;
    color: var(--protocol-color);
}

.protocol-card input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
    width: 0;
    height: 0;
}

.protocol-icon {
    font-size: 1.4rem;
    color: var(--protocol-color);
    transition: var(--transition);
    line-height: 1;
}

.protocol-card:hover .protocol-icon,
.protocol-card.selected .protocol-icon {
    filter: drop-shadow(0 0 8px var(--protocol-color));
}

.protocol-name {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    line-height: 1.2;
    transition: var(--transition);
}

.protocol-card.selected .protocol-name,
.protocol-card:hover .protocol-name {
    color: var(--text-primary);
}

/* Protocol color classes */
.proto-openvpn     { --protocol-color: var(--proto-openvpn-color); }
.proto-openconnect { --protocol-color: var(--proto-openconnect-color); }
.proto-wireguard   { --protocol-color: var(--proto-wireguard-color); }
.proto-dns         { --protocol-color: var(--proto-dns-color); }
.proto-monitoring  { --protocol-color: var(--proto-monitoring-color); }
.proto-adblock     { --protocol-color: var(--proto-adblock-color); }
.proto-vless       { --protocol-color: var(--proto-vless-color); }
.proto-vmess       { --protocol-color: var(--proto-vmess-color); }
.proto-trojan      { --protocol-color: var(--proto-trojan-color); }
.proto-hysteria    { --protocol-color: var(--proto-hysteria-color); }
.proto-shadowsocks { --protocol-color: var(--proto-shadowsocks-color); }

/* ============================================================
   Form Controls
   ============================================================ */
.form-section {
    margin-bottom: 18px;
}

.form-section-divider {
    border: none;
    border-top: 1px solid var(--border);
    margin: 18px 0;
}

.form-group-custom {
    margin-bottom: 14px;
}

.form-label-custom {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
    letter-spacing: 0.02em;
}

.form-label-custom span.required {
    color: var(--color-error);
    margin-left: 3px;
}

.form-control-custom {
    width: 100%;
    padding: 9px 13px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    font-size: 0.85rem;
    transition: var(--transition);
    outline: none;
    appearance: none;
    -webkit-appearance: none;
}

.form-control-custom:hover {
    border-color: var(--border-hover);
}

.form-control-custom:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--accent-glow);
    background: var(--bg-elevated);
}

.form-control-custom::placeholder {
    color: var(--text-muted);
}

.form-control-custom option {
    background: var(--bg-elevated);
    color: var(--text-primary);
}

.form-help-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 5px;
    line-height: 1.5;
}

.form-help-text a {
    color: var(--accent-cyan);
    text-decoration: none;
}
.form-help-text a:hover {
    text-decoration: underline;
}

.conditional-section {
    background: color-mix(in srgb, var(--accent-indigo) 5%, var(--bg-elevated));
    border: 1px solid color-mix(in srgb, var(--accent-indigo) 20%, transparent);
    border-radius: var(--radius-md);
    padding: 14px;
    margin-bottom: 14px;
    animation: slideDown 0.2s ease;
}

@keyframes slideDown {
    from { opacity: 0; transform: translateY(-8px); }
    to   { opacity: 1; transform: translateY(0); }
}

.conditional-section-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.07em;
    color: var(--accent-indigo);
    margin-bottom: 12px;
    display: flex;
    align-items: center;
    gap: 6px;
}

/* ============================================================
   Install Button
   ============================================================ */
.btn-install {
    width: 100%;
    padding: 12px 20px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.02em;
    margin-top: 8px;
}

.btn-install::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.btn-install:hover::before {
    opacity: 1;
}

.btn-install span {
    position: relative;
    z-index: 1;
}

.btn-install:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(6, 182, 212, 0.4);
}

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

.btn-install:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

/* ============================================================
   Status Badges (inline)
   ============================================================ */
.status-idle    { color: var(--text-muted); font-size: 0.78rem; }
.status-running { color: var(--accent-cyan); font-size: 0.78rem; }
.status-done    { color: var(--color-success); font-size: 0.78rem; }
.status-error   { color: var(--color-error); font-size: 0.78rem; }

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    padding: 3px 10px;
    border-radius: 99px;
    font-size: 0.72rem;
    font-weight: 600;
    letter-spacing: 0.04em;
    border: 1px solid transparent;
}

.status-badge.pending {
    background: rgba(148, 163, 184, 0.08);
    border-color: rgba(148, 163, 184, 0.2);
    color: var(--text-muted);
}

.status-badge.running {
    background: rgba(6, 182, 212, 0.1);
    border-color: rgba(6, 182, 212, 0.3);
    color: var(--accent-cyan);
}

.status-badge.success {
    background: rgba(16, 185, 129, 0.1);
    border-color: rgba(16, 185, 129, 0.3);
    color: var(--color-success);
}

.status-badge.failed {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: var(--color-error);
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background: currentColor;
    flex-shrink: 0;
}

.status-badge.running .badge-dot {
    animation: pulse-dot 1.2s ease infinite;
}

@keyframes pulse-dot {
    0%, 100% { opacity: 1; transform: scale(1); }
    50%       { opacity: 0.5; transform: scale(0.7); }
}

/* ============================================================
   Terminal
   ============================================================ */
.terminal-wrapper {
    display: flex;
    flex-direction: column;
    background: var(--bg-terminal);
    overflow: hidden;
}

.terminal-topbar {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: rgba(255,255,255,0.03);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-shrink: 0;
}

.terminal-dots {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.terminal-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    display: inline-block;
}

.terminal-dot.red    { background: #ff5f57; }
.terminal-dot.yellow { background: #febc2e; }
.terminal-dot.green  { background: #28c840; }

.terminal-title {
    flex: 1;
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.75rem;
    color: rgba(255,255,255,0.4);
    text-align: center;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.terminal-actions {
    display: flex;
    gap: 6px;
    flex-shrink: 0;
}

.terminal-btn {
    background: transparent;
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: var(--radius-sm);
    color: rgba(255,255,255,0.45);
    font-family: inherit;
    font-size: 0.72rem;
    padding: 3px 10px;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.terminal-btn:hover {
    background: rgba(255,255,255,0.07);
    color: rgba(255,255,255,0.8);
    border-color: rgba(255,255,255,0.2);
}

.terminal-output {
    flex: 1;
    overflow-y: auto;
    padding: 14px 16px;
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-size: 0.78rem;
    line-height: 1.7;
    color: #c9d1d9;
    word-break: break-all;
}

.terminal-line {
    display: block;
    white-space: pre-wrap;
    word-break: break-word;
}

/* Terminal line color variants */
.t-success { color: #3fb950; }
.t-error   { color: #f85149; }
.t-warning { color: #d29922; }
.t-info    { color: #58a6ff; }
.t-heading {
    color: #e3b341;
    font-weight: 600;
    font-size: 0.82rem;
}
.t-muted   { color: rgba(201, 209, 217, 0.4); }

/* Blinking cursor */
.terminal-cursor {
    display: inline-block;
    width: 8px;
    height: 1.1em;
    background: var(--accent-cyan);
    vertical-align: text-bottom;
    border-radius: 1px;
    animation: blink-cursor 1.1s step-end infinite;
    margin-left: 2px;
}

@keyframes blink-cursor {
    0%, 100% { opacity: 1; }
    50%       { opacity: 0; }
}

/* ============================================================
   Protocol Status Badges Row
   ============================================================ */
.status-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 10px 14px;
    border-top: 1px solid rgba(255,255,255,0.05);
    min-height: 0;
    background: rgba(255,255,255,0.015);
    flex-shrink: 0;
}

/* ============================================================
   Progress Steps Timeline
   ============================================================ */
.progress-steps {
    padding: 12px 16px;
    border-top: 1px solid rgba(255,255,255,0.05);
    background: rgba(255,255,255,0.015);
    flex-shrink: 0;
}

.progress-steps-inner {
    display: flex;
    align-items: flex-start;
    gap: 0;
    position: relative;
}

.progress-step {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    position: relative;
}

.progress-step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 11px;
    left: calc(50% + 11px);
    right: calc(-50% + 11px);
    height: 1px;
    background: rgba(255,255,255,0.1);
    transition: background 0.4s ease;
}

.progress-step.done:not(:last-child)::after,
.progress-step.active:not(:last-child)::after {
    background: rgba(16, 185, 129, 0.4);
}

.step-dot {
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: rgba(255,255,255,0.05);
    border: 1.5px solid rgba(255,255,255,0.12);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.65rem;
    color: rgba(255,255,255,0.3);
    transition: var(--transition);
    flex-shrink: 0;
    position: relative;
    z-index: 1;
}

.progress-step.active .step-dot {
    border-color: var(--accent-cyan);
    background: rgba(6, 182, 212, 0.15);
    color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(6, 182, 212, 0.2);
}

.progress-step.active .step-dot::before {
    content: '';
    position: absolute;
    inset: -5px;
    border-radius: 50%;
    border: 1.5px solid rgba(6, 182, 212, 0.4);
    animation: step-ping 1.2s ease-out infinite;
}

@keyframes step-ping {
    0%   { transform: scale(1); opacity: 0.7; }
    100% { transform: scale(1.8); opacity: 0; }
}

.progress-step.done .step-dot {
    border-color: var(--color-success);
    background: rgba(16, 185, 129, 0.15);
    color: var(--color-success);
}

.progress-step.failed .step-dot {
    border-color: var(--color-error);
    background: rgba(239, 68, 68, 0.15);
    color: var(--color-error);
}

.step-label {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.62rem;
    color: rgba(255,255,255,0.25);
    text-align: center;
    transition: color 0.3s ease;
    white-space: nowrap;
}

.progress-step.active .step-label  { color: var(--accent-cyan); }
.progress-step.done   .step-label  { color: rgba(16, 185, 129, 0.7); }
.progress-step.failed .step-label  { color: rgba(239, 68, 68, 0.7); }

/* ============================================================
   Coming Soon Banner (Sing-box)
   ============================================================ */
.coming-soon-banner {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 16px;
    background: color-mix(in srgb, var(--accent-purple) 8%, var(--bg-elevated));
    border: 1px solid color-mix(in srgb, var(--accent-purple) 25%, transparent);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-size: 0.82rem;
    margin-bottom: 18px;
}

.coming-soon-banner i {
    color: var(--accent-purple);
    font-size: 1rem;
    flex-shrink: 0;
}

/* ============================================================
   Login Page
   ============================================================ */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    position: relative;
    overflow: hidden;
}

/* Ambient orb backgrounds (dark mode only) */
.login-orb {
    position: fixed;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0;
    pointer-events: none;
    z-index: 0;
    transition: opacity 0.4s ease;
}

.login-orb-1 {
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(99, 102, 241, 0.18), transparent 70%);
    top: -100px;
    left: -100px;
}

.login-orb-2 {
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(6, 182, 212, 0.15), transparent 70%);
    bottom: -80px;
    right: -80px;
}

body:not([data-theme="light"]) .login-orb {
    opacity: 1;
}

.login-card {
    position: relative;
    z-index: 1;
    width: 100%;
    max-width: 420px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: 40px 36px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow:
        0 0 0 1px rgba(99, 102, 241, 0.08),
        0 24px 60px rgba(0, 0, 0, 0.4);
}

.login-logo-wrap {
    text-align: center;
    margin-bottom: 24px;
}

.login-logo-wrap img {
    height: 52px;
    width: auto;
}

.login-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-heading);
    text-align: center;
    letter-spacing: -0.02em;
    margin-bottom: 4px;
}

.login-subtitle {
    font-size: 0.82rem;
    color: var(--text-muted);
    text-align: center;
    margin-bottom: 28px;
}

.login-theme-toggle {
    position: fixed;
    top: 18px;
    right: 18px;
    z-index: 10;
}

.login-error {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 14px;
    background: rgba(239, 68, 68, 0.08);
    border: 1px solid rgba(239, 68, 68, 0.25);
    border-radius: var(--radius-md);
    color: #f87171;
    font-size: 0.82rem;
    margin-bottom: 18px;
}

.login-error i {
    flex-shrink: 0;
}

.login-btn {
    width: 100%;
    padding: 12px;
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    border: none;
    border-radius: var(--radius-md);
    color: #fff;
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 6px;
    letter-spacing: 0.02em;
}

.login-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 28px rgba(6, 182, 212, 0.35);
    filter: brightness(1.05);
}

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

/* ============================================================
   Utility
   ============================================================ */
.visually-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0,0,0,0);
    white-space: nowrap;
    border: 0;
}

/* ============================================================
   Responsive
   ============================================================ */
@media (max-width: 768px) {
    .app-main {
        padding: 14px;
    }
    .installer-grid {
        gap: 14px;
    }
    .protocol-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
    }
    .navbar-brand-text {
        display: none;
    }
    .app-navbar {
        padding: 0 14px;
        gap: 12px;
    }
    .nav-link-item a {
        padding: 7px 9px;
        font-size: 0.8rem;
    }
    .login-card {
        padding: 28px 22px;
    }
    .progress-step .step-label {
        display: none;
    }
}

@media (max-width: 480px) {
    .installer-tabs {
        flex-direction: column;
    }
    .protocol-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================================
   Bootstrap 4/5 Legacy Page Compatibility
   Makes old pages (accounting, playground, etc.) inherit the
   new design system without changing their HTML.
   ============================================================ */

/* Page wrapper */
body > .container-fluid,
body > div > .container-fluid {
    position: relative;
    z-index: 1;
    padding: 24px 28px !important;
}

/* Cards */
.card {
    background: var(--bg-card) !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-lg) !important;
    box-shadow: 0 4px 24px rgba(0,0,0,0.25) !important;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.card-header {
    background: var(--bg-surface) !important;
    border-bottom: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
    padding: 14px 18px !important;
}

.card-header h4,
.card-header strong,
.card-header p {
    color: var(--text-primary) !important;
    margin: 0;
    font-size: 0.95rem;
    font-weight: 600;
}

.card-header.bg-dark {
    background: rgba(6, 8, 24, 0.7) !important;
}

.card-body {
    background: transparent !important;
    color: var(--text-primary) !important;
    padding: 18px !important;
}

/* Form controls */
.form-control,
.form-select {
    background: var(--bg-input) !important;
    border: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-sm) !important;
    padding: 9px 13px !important;
    font-size: 0.875rem !important;
    transition: var(--transition) !important;
}

.form-control:focus,
.form-select:focus {
    background: var(--bg-input) !important;
    border-color: var(--border-focus) !important;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.12) !important;
    color: var(--text-primary) !important;
}

.form-control::placeholder {
    color: var(--text-muted) !important;
}

select.form-control option,
.form-select option {
    background: var(--bg-elevated) !important;
    color: var(--text-primary) !important;
}

/* Labels */
.form-group label,
label.form-check-label,
label:not(.protocol-card):not(.installer-tab) {
    color: var(--text-secondary) !important;
    font-size: 0.83rem;
    font-weight: 500;
    margin-bottom: 5px;
}

/* Checkboxes & radios */
.form-check-input {
    background-color: var(--bg-input) !important;
    border-color: var(--border-hover) !important;
    width: 15px;
    height: 15px;
}

.form-check-input:checked {
    background-color: var(--accent-indigo) !important;
    border-color: var(--accent-indigo) !important;
}

.form-check-label {
    color: var(--text-secondary) !important;
    font-size: 0.83rem !important;
    margin-left: 4px;
}

/* Buttons */
.btn-primary {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple)) !important;
    border: none !important;
    border-radius: var(--radius-md) !important;
    font-weight: 600 !important;
    font-size: 0.875rem !important;
    padding: 10px 20px !important;
    letter-spacing: 0.02em;
    transition: var(--transition) !important;
}

.btn-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-cyan)) !important;
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.35) !important;
}

.btn-primary:disabled {
    opacity: 0.55 !important;
    cursor: not-allowed !important;
}

/* Terminal / log output */
pre#output {
    background: var(--bg-terminal) !important;
    color: #a8b4d0 !important;
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 12.5px !important;
    border: 1px solid var(--border) !important;
    border-radius: var(--radius-md) !important;
    padding: 16px !important;
    min-height: 250px;
    max-height: 65vh;
    overflow-y: auto;
    line-height: 1.7;
    word-break: break-all;
    white-space: pre-wrap;
}

.ssh_output_block {
    background: var(--bg-terminal) !important;
    border-radius: 0 0 var(--radius-lg) var(--radius-lg) !important;
    padding: 0 !important;
}

/* HR dividers */
hr {
    border-color: var(--border) !important;
    opacity: 1 !important;
    margin: 14px 0 !important;
}

/* Paragraph text */
.card p, .card-body p {
    color: var(--text-secondary) !important;
    font-size: 0.875rem;
}

/* Strong text in cards */
.card strong {
    color: var(--text-primary) !important;
}

/* Textarea */
textarea.form-control {
    background: var(--bg-terminal) !important;
    color: #a8b4d0 !important;
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 12.5px !important;
    resize: vertical;
}

/* Status circles (legacy) */
.fa-circle.success { color: var(--color-success) !important; }
.fa-circle.error   { color: var(--color-error) !important; }
.fa-circle         { color: var(--color-warning) !important; }

/* ── Sing-box config panel ───────────────────────────────────── */
#singbox-config-panel .card-panel {
    border-top: 2px solid var(--accent-cyan);
}
#singbox-config-panel pre {
    background: var(--bg-terminal);
    color: #a8b4d0;
    font-family: 'JetBrains Mono', monospace;
    font-size: 11.5px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: 14px 16px;
    max-height: 280px;
    overflow-y: auto;
    white-space: pre;
    line-height: 1.6;
    word-break: break-all;
}

/* ── History table ───────────────────────────────────────────── */
.history-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}
.history-table th {
    padding: 10px 16px;
    text-align: left;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--text-muted);
    border-bottom: 1px solid var(--border);
    background: var(--bg-surface);
}
.history-table td {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-secondary);
    vertical-align: middle;
}
.history-table tr:hover td {
    background: var(--bg-elevated);
}
.history-ip {
    font-family: 'JetBrains Mono', monospace;
    font-size: 0.8rem;
    color: var(--accent-cyan);
    background: transparent;
    padding: 0;
}
/* Service tags */
.svc-tag {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 600;
    margin: 2px 3px 2px 0;
    background: var(--bg-elevated);
    color: var(--text-secondary);
    border: 1px solid var(--border);
}
.svc-tag.svc-monitoring   { color: #38bdf8; border-color: rgba(56,189,248,.35); }
.svc-tag.svc-openvpn      { color: #a78bfa; border-color: rgba(167,139,250,.35); }
.svc-tag.svc-openconnect  { color: #34d399; border-color: rgba(52,211,153,.35); }
.svc-tag.svc-wireguard    { color: #fb923c; border-color: rgba(251,146,60,.35); }
.svc-tag.svc-dns          { color: #facc15; border-color: rgba(250,204,21,.35); }
.svc-tag.svc-vless,
.svc-tag.svc-vmess,
.svc-tag.svc-trojan,
.svc-tag.svc-hysteria,
.svc-tag.svc-shadowsocks  { color: #f472b6; border-color: rgba(244,114,182,.35); }