:root {
    --bg: #0a0e14;
    --bg2: #0d1320;
    --panel: rgba(22, 27, 38, 0.5); /* increased transparency for glass */
    --border: rgba(255, 255, 255, 0.08); /* glass border */
    --border2: rgba(255, 255, 255, 0.12);
    --text: #e8eef7;
    --muted: #8b97aa;
    --npm: #cb3837;
    --c1: #5b8cff;
    --c2: #9d6bff;
    --c3: #38e0c4;
    --glow: rgba(91, 140, 255, 0.45);
    
    /* Colors for multi-package comparison */
    --pkg-0: #5b8cff;
    --pkg-1: #9d6bff;
    --pkg-2: #38e0c4;
    --pkg-3: #ff6b6b;
    --pkg-4: #feca57;
    --pkg-5: #ff9ff3;
}

* {
    box-sizing: border-box;
}

html,
body {
    height: 100%;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    line-height: 1.5;
    background:
        radial-gradient(1200px 700px at 12% -10%, rgba(91, 140, 255, 0.15), transparent 60%),
        radial-gradient(1000px 600px at 100% 0%, rgba(157, 107, 255, 0.15), transparent 55%),
        radial-gradient(900px 700px at 50% 120%, rgba(56, 224, 196, 0.10), transparent 60%),
        var(--bg);
    background-attachment: fixed;
}

.wrap {
    max-width: 940px;
    margin: 0 auto;
    padding: 44px 20px 80px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
}

.brand .logo-img {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    box-shadow: 0 4px 16px var(--glow);
}

h1 {
    font-size: 30px;
    margin: 0;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: linear-gradient(100deg, #fff 10%, var(--c1) 55%, var(--c2) 90%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sub {
    color: var(--muted);
    margin: 0 0 28px;
    font-size: 15px;
}

form {
    margin-bottom: 18px;
}

.input-row {
    display: flex;
    gap: 10px;
    align-items: stretch;
}

.input-container {
    flex: 1;
    position: relative;
}

.input-shell {
    width: 100%;
    height: 100%;
    position: relative;
    display: flex;
    align-items: center;
    background: rgba(13, 19, 32, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--border2);
    border-radius: 12px;
    transition: border-color .15s, box-shadow .15s, background .15s;
    z-index: 10;
}

.input-shell:focus-within {
    border-color: var(--c1);
    background: rgba(13, 19, 32, 0.8);
    box-shadow: 0 0 0 4px rgba(91, 140, 255, 0.12);
}

.input-shell svg {
    width: 18px;
    height: 18px;
    margin-left: 14px;
    color: var(--muted);
    flex: none;
}

input[type="text"] {
    flex: 1;
    padding: 14px 14px;
    font-size: 15px;
    background: transparent;
    color: var(--text);
    border: none;
    outline: none;
}

/* Autocomplete Dropdown */
.dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    right: 0;
    background: rgba(22, 27, 38, 0.85);
    border: 1px solid var(--border2);
    border-radius: 12px;
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    z-index: 20;
    overflow: hidden;
    display: none;
}

.dropdown.active {
    display: block;
    animation: dropIn .25s cubic-bezier(.2, .7, .2, 1) both;
}

@keyframes dropIn {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: none; }
}

.dropdown-item {
    padding: 10px 14px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    transition: background .15s;
}

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

.dropdown-item:hover, .dropdown-item.focused {
    background: rgba(91, 140, 255, 0.2);
}

.dropdown-item .pkg-name {
    font-weight: 600;
    color: var(--text);
}

.dropdown-item .pkg-desc {
    font-size: 12px;
    color: var(--muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 60%;
}

button.go, .btn-secondary {
    padding: 0 22px;
    font-size: 15px;
    font-weight: 700;
    cursor: pointer;
    border: none;
    border-radius: 12px;
    transition: transform .15s cubic-bezier(.2, .7, .2, 1), box-shadow .15s cubic-bezier(.2, .7, .2, 1);
}

button.go {
    color: #fff;
    background: linear-gradient(135deg, var(--c1), var(--c2));
    box-shadow: 0 6px 20px var(--glow);
}

button.go:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 28px var(--glow);
}

button.go:active, .btn-secondary:active {
    transform: translateY(0);
}

.btn-secondary {
    color: var(--c1);
    background: rgba(91, 140, 255, 0.1);
    border: 1px solid rgba(91, 140, 255, 0.2);
}

.btn-secondary:hover {
    background: rgba(91, 140, 255, 0.2);
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(91, 140, 255, 0.15);
}

.history {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 32px;
    align-items: center;
}

.history .label {
    color: var(--muted);
    font-size: 13px;
    margin-right: 2px;
}

.chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    background: rgba(13, 19, 32, 0.6);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border2);
    border-radius: 999px;
    padding: 6px 7px 6px 13px;
    font-size: 13px;
    cursor: pointer;
    transition: border-color .15s, transform .15s, background .15s;
}

.chip:hover {
    border-color: var(--c1);
    transform: translateY(-1px);
    background: rgba(91, 140, 255, 0.1);
}

.chip .x {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    color: var(--muted);
    font-size: 14px;
    line-height: 1;
    transition: background .12s, color .12s;
}

.chip .x:hover {
    background: var(--npm);
    color: #fff;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px;
    margin-bottom: 24px;
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    box-shadow: 0 24px 60px rgba(0, 0, 0, 0.4);
    animation: rise .4s cubic-bezier(.2, .8, .2, 1) both;
}

@keyframes rise {
    from {
        opacity: 0;
        transform: translateY(15px) scale(0.98);
    }
    to {
        opacity: 1;
        transform: none;
    }
}

.status {
    color: var(--muted);
    padding: 28px 4px;
    font-size: 15px;
}

.status.error {
    color: #ff7b72;
}

.spinner {
    display: inline-block;
    width: 15px;
    height: 15px;
    margin-right: 9px;
    vertical-align: -2px;
    border: 2px solid var(--border2);
    border-top-color: var(--c1);
    border-radius: 50%;
    animation: spin .7s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* Multi-package stats layout */
.stats-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 22px;
}

.stats-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 12px;
    animation: slideIn .4s cubic-bezier(.2, .8, .2, 1) both;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: none; }
}

.stats-row-title {
    width: 100%;
    font-weight: 700;
    font-size: 16px;
    color: var(--text);
    display: flex;
    align-items: center;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

.pkg-dot {
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
    box-shadow: 0 0 8px currentColor;
}

.ver {
    color: var(--c3);
    font-size: 12px;
    font-weight: 700;
    border: 1px solid rgba(56, 224, 196, 0.3);
    background: rgba(56, 224, 196, 0.08);
    padding: 2px 8px;
    border-radius: 999px;
    margin-left: 8px;
}

.repo-link {
    margin-left: auto;
    font-size: 13px;
    color: var(--muted);
    text-decoration: none;
    transition: color .15s;
}
.repo-link:hover {
    color: var(--c1);
}

.stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
    gap: 14px;
    width: 100%;
}

.stat {
    position: relative;
    overflow: hidden;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 16px;
    transition: transform .2s cubic-bezier(.2, .8, .2, 1), background .2s, box-shadow .2s;
}

.stat:hover {
    transform: translateY(-2px);
    background: rgba(255, 255, 255, 0.04);
    box-shadow: 0 8px 24px rgba(0,0,0,0.2);
}

.stat::after {
    content: "";
    position: absolute;
    inset: 0 0 auto 0;
    height: 3px;
    background: var(--stat-color, linear-gradient(90deg, var(--c1), var(--c2)));
    opacity: .8;
}

.stat .k {
    color: var(--muted);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: .05em;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat .v {
    font-size: 24px;
    font-weight: 800;
    margin-top: 4px;
    letter-spacing: -0.5px;
    display: flex;
    align-items: baseline;
    gap: 8px;
}

.badge {
    font-size: 11px;
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 6px;
    letter-spacing: 0;
}
.badge.positive {
    background: rgba(56, 224, 196, 0.15);
    color: #38e0c4;
}
.badge.negative {
    background: rgba(255, 107, 107, 0.15);
    color: #ff6b6b;
}

.controls {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.chart-title {
    font-size: 14px;
    color: var(--muted);
    font-weight: 600;
}

.toggles {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.seg {
    display: inline-flex;
    background: rgba(0,0,0,0.2);
    border: 1px solid var(--border2);
    border-radius: 10px;
    padding: 4px;
}

.seg button {
    background: transparent;
    color: var(--muted);
    border: none;
    border-radius: 7px;
    padding: 6px 14px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: color .15s, background .15s, box-shadow .15s;
}

.seg button:hover:not(:disabled) {
    color: var(--text);
}

.seg button.active {
    color: #fff;
    background: linear-gradient(135deg, var(--c1), var(--c2));
    box-shadow: 0 4px 14px var(--glow);
}

.seg button:disabled {
    opacity: .3;
    cursor: not-allowed;
}

.seg .seg-label {
    font-size: 11px;
    color: var(--muted);
    align-self: center;
    padding: 0 8px 0 4px;
    text-transform: uppercase;
    letter-spacing: .06em;
}

.export-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(0,0,0,0.2);
    color: var(--text);
    border: 1px solid var(--border2);
    border-radius: 10px;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 700;
    cursor: pointer;
    transition: border-color .15s, transform .15s, color .15s;
}

.export-btn svg {
    width: 15px;
    height: 15px;
}

.export-btn:hover {
    border-color: var(--c1);
    color: #fff;
    transform: translateY(-2px);
}

.export-btn:disabled {
    opacity: .5;
    cursor: default;
    transform: none;
}

.chart-box {
    position: relative;
    outline: none; 
}
.chart-box:focus-visible {
    border-radius: 12px;
    box-shadow: 0 0 0 2px var(--c1);
}

svg.chart {
    width: 100%;
    height: auto;
    display: block;
    overflow: visible;
}

.grid line {
    stroke: var(--border2);
    stroke-dasharray: 4 6;
    opacity: .6;
}

.grid text,
.xaxis text {
    fill: var(--muted);
    font-size: 11px;
    font-weight: 600;
}

.xbaseline {
    stroke: var(--border2);
}

.area-path {
    transition: opacity .2s;
}

.line-path {
    fill: none;
    stroke-width: 3;
    stroke-linejoin: round;
    stroke-linecap: round;
    filter: drop-shadow(0 4px 6px rgba(0,0,0,0.3));
}

.cursor-line {
    stroke: var(--c1);
    stroke-width: 1.5;
    stroke-dasharray: 4 4;
    opacity: 0;
    pointer-events: none;
}

.cursor-dot {
    opacity: 0;
    pointer-events: none;
}

.cursor-dot circle.halo {
    fill: var(--glow);
}

.cursor-dot circle.core {
    fill: #fff;
    stroke-width: 2.5;
}

.draw {
    stroke-dasharray: var(--len);
    stroke-dashoffset: var(--len);
    animation: draw 1s cubic-bezier(.2, .8, .2, 1) forwards;
}

@keyframes draw {
    to { stroke-dashoffset: 0; }
}

.area-rise {
    transform-origin: bottom;
    animation: areaIn .9s ease forwards;
}

@keyframes areaIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.tooltip {
    position: absolute;
    pointer-events: none;
    z-index: 5;
    background: rgba(10, 14, 20, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    color: #fff;
    border: 1px solid var(--border2);
    border-radius: 12px;
    padding: 12px 16px;
    font-size: 13px;
    white-space: nowrap;
    transform: translate(-50%, calc(-100% - 16px));
    opacity: 0;
    transition: opacity .15s;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.6);
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.tooltip .d {
    color: var(--muted);
    font-size: 11.5px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 6px;
    padding-bottom: 6px;
    border-bottom: 1px solid var(--border);
}

.tooltip-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.tooltip-row .pkg-name {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
}
.tooltip-row .pkg-color {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    box-shadow: 0 0 6px currentColor;
}

.tooltip-row .pkg-val {
    font-weight: 800;
    font-size: 15px;
}

/* Related Packages */
.related-packages-container {
    margin-top: 40px;
    animation: rise .4s .2s cubic-bezier(.2, .8, .2, 1) both;
}

.related-packages-container.hidden {
    display: none;
}

.related-title {
    font-size: 14px;
    font-weight: 700;
    color: var(--muted);
    margin-bottom: 12px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.related-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.related-chips .chip {
    padding: 8px 16px;
    font-size: 14px;
    font-weight: 600;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border);
}

.related-chips .chip:hover {
    background: rgba(91, 140, 255, 0.15);
    border-color: var(--c1);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(91, 140, 255, 0.2);
}