/* ProxVN Control Center Stylesheet */
/* 2026 redesign */

:root {
    --font-body: 'Manrope', 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-display: 'Space Grotesk', 'Manrope', sans-serif;

    --space-2: 8px;
    --space-3: 12px;
    --space-4: 16px;
    --space-5: 20px;
    --space-6: 24px;
    --space-7: 28px;
    --space-8: 32px;

    --radius-sm: 10px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --radius-pill: 999px;

    --shadow-sm: 0 8px 18px rgba(15, 23, 42, 0.15);
    --shadow-md: 0 16px 40px rgba(15, 23, 42, 0.25);
    --shadow-lg: 0 28px 60px rgba(15, 23, 42, 0.35);

    --transition-base: 220ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-bounce: 400ms cubic-bezier(0.175, 0.885, 0.32, 1.275);

    --app-max-width: 1360px;
    --chart-height: 320px;

    --color-background: #050d1f;
    --color-surface: rgba(12, 19, 37, 0.82);
    --color-card: rgba(13, 23, 43, 0.88);
    --color-card-strong: rgba(12, 41, 87, 0.22);
    --color-border: rgba(148, 163, 184, 0.18);
    --color-border-strong: rgba(148, 163, 184, 0.28);
    --color-text-primary: #f8fafc;
    --color-text-secondary: rgba(226, 232, 240, 0.78);
    --color-text-muted: rgba(148, 163, 184, 0.65);
    --color-muted-surface: rgba(15, 23, 42, 0.6);

    --gradient-primary: radial-gradient(120% 120% at 0% 0%, rgba(56, 189, 248, 0.35) 0%, rgba(14, 116, 144, 0.05) 55%, transparent 100%);
    --gradient-accent: radial-gradient(90% 100% at 100% 20%, rgba(129, 140, 248, 0.35) 0%, rgba(76, 29, 149, 0.1) 55%, transparent 100%);

    --accent-emerald: #34d399;
    --accent-indigo: #818cf8;
    --accent-cyan: #22d3ee;
    --accent-purple: #a855f7;
    --accent-warning: #f59e0b;
    --accent-danger: #f97316;
}

body[data-theme="light"] {
    --color-background: #f5f7fb;
    --color-surface: rgba(255, 255, 255, 0.9);
    --color-card: rgba(255, 255, 255, 0.95);
    --color-card-strong: rgba(59, 130, 246, 0.14);
    --color-border: rgba(15, 23, 42, 0.08);
    --color-border-strong: rgba(15, 23, 42, 0.12);
    --color-text-primary: #0f172a;
    --color-text-secondary: rgba(15, 23, 42, 0.72);
    --color-text-muted: rgba(15, 23, 42, 0.55);
    --color-muted-surface: rgba(226, 232, 240, 0.8);

    --gradient-primary: radial-gradient(120% 120% at 0% 0%, rgba(56, 189, 248, 0.2) 0%, rgba(59, 130, 246, 0.05) 55%, transparent 100%);
    --gradient-accent: radial-gradient(90% 100% at 100% 20%, rgba(129, 140, 248, 0.2) 0%, rgba(236, 72, 153, 0.05) 60%, transparent 100%);
}

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

body {
    font-family: var(--font-body);
    background: var(--color-background);
    color: var(--color-text-primary);
    min-height: 100vh;
    line-height: 1.5;
    transition: background 300ms ease, color 300ms ease;
}

::selection {
    background: rgba(129, 140, 248, 0.35);
    color: var(--color-text-primary);
}

.background-layer {
    position: fixed;
    inset: 0;
    overflow: hidden;
    z-index: -1;
}

.background-layer .gradient {
    position: absolute;
    width: 120%;
    height: 120%;
    filter: blur(80px);
    opacity: 0.9;
}

.gradient-primary {
    top: -20%;
    left: -15%;
    background: var(--gradient-primary);
    animation: drift 22s ease-in-out infinite;
}

.gradient-accent {
    bottom: -30%;
    right: -10%;
    background: var(--gradient-accent);
    animation: drift 26s ease-in-out infinite reverse;
}

@keyframes drift {
    0%, 100% {
        transform: translate3d(0, 0, 0) scale(1);
    }
    40% {
        transform: translate3d(3%, -2%, 0) scale(1.06);
    }
    70% {
        transform: translate3d(-4%, 3%, 0) scale(0.98);
    }
}

.app-shell {
    position: relative;
    max-width: var(--app-max-width);
    margin: 0 auto;
    padding: clamp(18px, 4vw, 48px) clamp(16px, 4vw, 48px);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    gap: clamp(18px, 3vw, 32px);
}

.topbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
    padding: var(--space-6);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(28px);
}

.brand {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.brand-icon {
    font-size: clamp(2.2rem, 4vw, 2.8rem);
}

.brand-title {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.45rem, 3.6vw, 1.9rem);
    letter-spacing: -0.02em;
}

.brand-subtitle {
    margin-top: 2px;
    color: var(--color-text-muted);
    font-size: clamp(0.9rem, 2.2vw, 1rem);
}

.topbar-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.connection-pill {
    display: inline-flex;
    align-items: center;
    gap: var(--space-3);
    padding: 10px 18px;
    border-radius: var(--radius-pill);
    border: 1px solid var(--color-border);
    background: rgba(148, 163, 184, 0.15);
    color: var(--color-text-secondary);
    font-weight: 600;
    transition: all var(--transition-base);
}

.connection-pill .pill-label {
    font-weight: 600;
    letter-spacing: 0.02em;
}

.connection-pill .pill-indicator {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: rgba(148, 163, 184, 0.6);
    position: relative;
}

.connection-pill.is-online {
    background: rgba(52, 211, 153, 0.15);
    border-color: rgba(16, 185, 129, 0.35);
    color: #34d399;
}

.connection-pill.is-online .pill-indicator {
    background: #34d399;
}

.connection-pill.is-online .pill-indicator::after {
    content: '';
    position: absolute;
    inset: -6px;
    border-radius: 50%;
    border: 2px solid rgba(52, 211, 153, 0.35);
    animation: pulse 1.8s ease-in-out infinite;
}

.connection-pill.is-offline {
    background: rgba(248, 113, 113, 0.12);
    border-color: rgba(239, 68, 68, 0.28);
    color: #fb7185;
}

.connection-pill.is-offline .pill-indicator {
    background: #fb7185;
}

.ghost-btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid transparent;
    background: rgba(148, 163, 184, 0.12);
    color: inherit;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-base);
}

.ghost-btn:hover {
    border-color: rgba(129, 140, 248, 0.5);
    background: rgba(129, 140, 248, 0.18);
    transform: translateY(-1px);
}

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

.theme-toggle-icon {
    font-size: 1.1rem;
}

.layout-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) clamp(300px, 30%, 360px);
    gap: clamp(20px, 4vw, 32px);
    align-items: start;
}

.primary-column,
.secondary-column {
    display: flex;
    flex-direction: column;
    gap: clamp(18px, 3vw, 28px);
}

.panel {
    position: relative;
    padding: clamp(20px, 2.2vw, 32px);
    border-radius: var(--radius-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    backdrop-filter: blur(26px);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: var(--space-4);
    margin-bottom: clamp(20px, 3vw, 28px);
}

.panel-title {
    font-family: var(--font-display);
    font-size: clamp(1.1rem, 2.8vw, 1.4rem);
    font-weight: 600;
    letter-spacing: -0.01em;
}

.panel-meta {
    color: var(--color-text-muted);
    font-size: 0.9rem;
}

.panel-actions {
    display: flex;
    gap: var(--space-3);
}

.refresh-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
    padding: 10px 16px;
    border-radius: var(--radius-pill);
    border: 1px solid rgba(129, 140, 248, 0.35);
    background: rgba(129, 140, 248, 0.22);
    color: #e0e7ff;
    font-weight: 600;
    cursor: pointer;
    transition: transform var(--transition-bounce), box-shadow var(--transition-base);
}

.refresh-btn .icon {
    display: inline-flex;
    transform-origin: center;
    transition: transform var(--transition-base);
}

.refresh-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 18px 35px rgba(129, 140, 248, 0.35);
}

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

.refresh-btn:active .icon {
    transform: rotate(180deg);
}

.stats-panel {
    overflow: hidden;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: clamp(16px, 3vw, 24px);
}

.stat-card {
    position: relative;
    padding: clamp(20px, 3vw, 28px);
    background: var(--color-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: transform var(--transition-bounce), box-shadow var(--transition-base);
}

.stat-card::after {
    content: '';
    position: absolute;
    inset: 0;
    border-radius: inherit;
    opacity: 0;
    transition: opacity var(--transition-base);
    background: linear-gradient(145deg, rgba(129, 140, 248, 0.12) 0%, transparent 65%);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.stat-card:hover::after {
    opacity: 1;
}

.stat-card[data-accent="emerald"] {
    border-color: rgba(52, 211, 153, 0.28);
    box-shadow: 0 20px 55px rgba(52, 211, 153, 0.16);
}

.stat-card[data-accent="indigo"] {
    border-color: rgba(129, 140, 248, 0.35);
    box-shadow: 0 20px 55px rgba(129, 140, 248, 0.16);
}

.stat-card[data-accent="cyan"] {
    border-color: rgba(45, 212, 191, 0.28);
}

.stat-card[data-accent="purple"] {
    border-color: rgba(168, 85, 247, 0.28);
}

.stat-card-header {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--color-text-muted);
}

.stat-card-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.12);
    font-size: 1.35rem;
}

.stat-card-label {
    font-size: 0.95rem;
    letter-spacing: 0.02em;
}

.stat-card-value {
    margin-top: var(--space-4);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: clamp(2rem, 4vw, 2.6rem);
}

.stat-card-footer {
    margin-top: var(--space-4);
}

.trend-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    border-radius: var(--radius-pill);
    background: rgba(129, 140, 248, 0.16);
    color: rgba(199, 210, 254, 0.9);
    font-size: 0.85rem;
    font-weight: 600;
}

.trend-pill.trend-positive {
    background: rgba(52, 211, 153, 0.16);
    color: rgba(52, 211, 153, 0.95);
}

.stat-hint {
    font-size: 0.85rem;
    color: var(--color-text-muted);
}

.tunnels-list {
    display: grid;
    gap: clamp(16px, 3vw, 24px);
}

.tunnel-card {
    padding: clamp(18px, 2.6vw, 28px);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    background: var(--color-card);
    transition: transform var(--transition-bounce), border-color var(--transition-base), box-shadow var(--transition-base);
}

.tunnel-card:hover {
    transform: translateY(-3px);
    border-color: rgba(129, 140, 248, 0.45);
    box-shadow: var(--shadow-md);
}

.tunnel-card-header {
    display: flex;
    justify-content: space-between;
    gap: var(--space-4);
    align-items: flex-start;
    margin-bottom: clamp(16px, 2.5vw, 22px);
}

.tunnel-card-heading {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.tunnel-name {
    font-family: var(--font-display);
    font-size: clamp(1.05rem, 2.6vw, 1.35rem);
    letter-spacing: -0.01em;
}

.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    background: rgba(148, 163, 184, 0.16);
    color: var(--color-text-secondary);
}

.badge-http {
    background: rgba(129, 140, 248, 0.18);
    color: rgba(199, 210, 254, 0.95);
}

.badge-tcp {
    background: rgba(52, 211, 153, 0.18);
    color: rgba(52, 211, 153, 0.95);
}

.badge-udp {
    background: rgba(14, 165, 233, 0.18);
    color: rgba(56, 189, 248, 0.95);
}

.status-chip {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px 14px;
    border-radius: var(--radius-pill);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    font-weight: 700;
}

.status-active {
    background: rgba(52, 211, 153, 0.18);
    color: rgba(52, 211, 153, 0.98);
    border: 1px solid rgba(52, 211, 153, 0.32);
}

.status-inactive {
    background: rgba(248, 113, 113, 0.14);
    color: rgba(248, 113, 113, 0.95);
    border: 1px solid rgba(248, 113, 113, 0.28);
}

.tunnel-card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: clamp(16px, 2.2vw, 24px);
}

.tunnel-card-item {
    display: grid;
    gap: 6px;
}

.tunnel-card-item dt {
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-muted);
}

.tunnel-card-item dd {
    font-family: var(--font-display);
    font-size: 1rem;
    font-weight: 500;
    color: var(--color-text-primary);
}

.loading-state {
    display: grid;
    gap: 12px;
}

.loading-line {
    height: 20px;
    border-radius: var(--radius-pill);
    background: linear-gradient(90deg, rgba(148, 163, 184, 0.15) 0%, rgba(148, 163, 184, 0.32) 50%, rgba(148, 163, 184, 0.15) 100%);
    background-size: 200% 100%;
    animation: shimmer 1.6s ease infinite;
}

@keyframes shimmer {
    0% {
        background-position: -200% 50%;
    }
    100% {
        background-position: 200% 50%;
    }
}

.empty-state {
    margin-top: var(--space-5);
    padding: clamp(22px, 4vw, 36px);
    border-radius: var(--radius-lg);
    border: 1px dashed var(--color-border);
    background: rgba(148, 163, 184, 0.08);
    text-align: center;
    display: grid;
    gap: 14px;
    color: var(--color-text-secondary);
}

.empty-illustration {
    font-size: 2.4rem;
}

.inline-code {
    display: inline-flex;
    align-items: center;
    padding: 6px 10px;
    border-radius: var(--radius-pill);
    background: rgba(15, 23, 42, 0.5);
    border: 1px solid rgba(148, 163, 184, 0.25);
    font-family: 'Fira Code', 'SFMono-Regular', Menlo, Consolas, monospace;
    font-size: 0.8rem;
    color: inherit;
    gap: 6px;
}

body[data-theme="light"] .inline-code {
    background: rgba(226, 232, 240, 0.8);
}

.chart-wrapper {
    position: relative;
    height: var(--chart-height);
}

.quick-actions .action-list {
    display: grid;
    gap: clamp(14px, 3vw, 20px);
    list-style: none;
}

.action-item {
    padding: clamp(12px, 2vw, 18px);
    border-radius: var(--radius-md);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    display: grid;
    gap: 10px;
}

.action-item h3 {
    font-size: 1rem;
    font-weight: 600;
}

.action-item p {
    color: var(--color-text-muted);
    font-size: 0.92rem;
}

.status-list {
    display: grid;
    gap: 14px;
}

.status-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-4);
    padding: 12px 0;
    border-bottom: 1px solid var(--color-border);
}

.status-item:last-child {
    border-bottom: none;
}

.status-item dt {
    color: var(--color-text-muted);
    font-size: 0.88rem;
    letter-spacing: 0.04em;
}

.status-item dd {
    font-family: var(--font-display);
    font-weight: 600;
}

.footer {
    margin-top: auto;
    padding: clamp(18px, 3vw, 28px);
    text-align: center;
    color: var(--color-text-muted);
    display: grid;
    gap: var(--space-3);
}

.footer-links {
    display: inline-flex;
    justify-content: center;
    align-items: center;
    gap: clamp(18px, 3vw, 32px);
}

.footer-link {
    color: inherit;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    transition: color var(--transition-base);
}

.footer-link:hover {
    color: rgba(129, 140, 248, 0.88);
}

.toast-container {
    position: fixed;
    top: 24px;
    right: 24px;
    z-index: 1200;
    display: grid;
    gap: 12px;
}

.toast {
    min-width: 260px;
    max-width: 360px;
    padding: 14px 18px;
    border-radius: var(--radius-md);
    background: var(--color-card);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-sm);
    font-weight: 600;
    animation: slideInRight 260ms ease forwards;
}

.toast.is-leaving {
    animation: fadeOutRight 220ms ease forwards;
}

.toast-success {
    border-color: rgba(52, 211, 153, 0.35);
    color: #34d399;
}

.toast-warning {
    border-color: rgba(250, 204, 21, 0.35);
    color: #facc15;
}

.toast-info {
    border-color: rgba(96, 165, 250, 0.35);
    color: #60a5fa;
}

.toast-danger {
    border-color: rgba(248, 113, 113, 0.35);
    color: #f87171;
}

@keyframes slideInRight {
    0% {
        opacity: 0;
        transform: translateX(120px) scale(0.95);
    }
    100% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
}

@keyframes fadeOutRight {
    0% {
        opacity: 1;
        transform: translateX(0) scale(1);
    }
    100% {
        opacity: 0;
        transform: translateX(80px) scale(0.95);
    }
}

.animate-fade-in {
    animation: fadeIn 360ms ease both;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0%,
    100% {
        transform: scale(1);
        opacity: 1;
    }
    50% {
        transform: scale(1.2);
        opacity: 0.6;
    }
}

@media (max-width: 1200px) {
    .layout-grid {
        grid-template-columns: 1fr;
    }

    .secondary-column {
        order: -1;
    }
}

@media (max-width: 768px) {
    .topbar,
    .panel {
        padding: 18px;
    }

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

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

    .connection-pill,
    .ghost-btn {
        width: 100%;
        justify-content: center;
    }

    .chart-wrapper {
        height: 260px;
    }

    .toast-container {
        left: 16px;
        right: 16px;
    }
}

@media (max-width: 520px) {
    .tunnel-card-grid {
        grid-template-columns: 1fr;
    }

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