:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111828;
    --bg-card: #161d2e;
    --bg-card-hover: #1a2236;
    --border: #1e2a42;
    --border-glow: #0085d444;
    --accent: #08b4d9;
    --accent-dim: #0085d444;
    --accent-bright: #08b4d9;
    --danger: #ff4757;
    --danger-dim: #00b9d444;
    --warning: #ffa502;
    --warning-dim: #ffa50244;
    --text-primary: #e8ecf4;
    --text-secondary: #8892a8;
    --text-muted: #556078;
    --purple: #a855f7;
    --blue: #3b82f6;
    --cyan: #06b6d4;
    --orange: #f97316;
    --pink: #ec4899;
}


body {
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    scrollbar-width: thin;
}

    /* Ambient background */
    body::before {
        content: '';
        position: fixed;
        top: -50%;
        left: -50%;
        width: 200%;
        height: 200%;
        background: radial-gradient(ellipse at 20% 50%, #00d4aa08 0%, transparent 50%), radial-gradient(ellipse at 80% 20%, #3b82f608 0%, transparent 50%), radial-gradient(ellipse at 50% 80%, #a855f708 0%, transparent 50%);
        animation: ambientDrift 20s ease-in-out infinite;
        z-index: 0;
        pointer-events: none;
    }

@keyframes ambientDrift {
    0%, 100% {
        transform: translate(0, 0) rotate(0deg);
    }

    33% {
        transform: translate(-2%, 1%) rotate(1deg);
    }

    66% {
        transform: translate(1%, -1%) rotate(-0.5deg);
    }
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 32px;
    position: relative;
    z-index: 1;
}

/* ─── HERO ─── */
.hero {
    text-align: center;
    position: relative;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--accent-dim);
    border: 1px solid var(--accent);
    border-radius: 100px;
    padding: 6px 20px;
    font-size: 12px;
    font-weight: 500;
    color: var(--accent);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 32px;
    animation: fadeInDown 0.6s ease-out;
}

    .hero-badge::before {
        content: '';
        width: 6px;
        height: 6px;
        border-radius: 50%;
        background: var(--accent);
        animation: pulse 2s infinite;
    }

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        box-shadow: 0 0 0 0 var(--accent);
    }

    50% {
        opacity: 0.7;
        box-shadow: 0 0 0 6px transparent;
    }
}

.hero h1 {
    font-size: clamp(32px, 5vw, 56px);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: 20px;
    animation: fadeInDown 0.8s ease-out;
}

    .hero h1 .highlight {
        background: linear-gradient(135deg, var(--accent), var(--cyan));
        -webkit-background-clip: text;
        -webkit-text-fill-color: transparent;
        background-clip: text;
    }

.hero-subtitle {
    font-size: 18px;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto 40px;
    animation: fadeInDown 1s ease-out;
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: 48px;
    flex-wrap: wrap;
    animation: fadeInUp 1.2s ease-out;
    padding: 40px 0px;
}

.hero-stat {
    text-align: center;
}

.hero-stat-value {
    font-size: 32px;
    font-weight: 700;
    color: var(--accent);
}

.hero-stat-label {
    font-size: 13px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: 4px;
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ─── SECTION ─── */
.section {
    margin-bottom: 64px;
}

.section-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.section-number {
    font-size: 14px;
    font-weight: 600;
    color: var(--accent);
    background: var(--accent-dim);
    border: 1px solid var(--accent);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    flex-shrink: 0;
}

.section-title {
    font-size: 22px;
    font-weight: 600;
    color: #ffffff;
}

.section-desc {
    font-size: 14px;
    color: var(--text-secondary);
    margin-left: auto;
}

/* ─── CARDS ─── */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 32px;
    transition: all 0.3s ease;
}

    .card:hover {
        border-color: var(--border-glow);
        box-shadow: 0 0 40px var(--accent-dim);
    }

/* ─── FORMULA BOX ─── */
.formula-box {
    background: linear-gradient(135deg, #0d1520, #111d30);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 28px;
    margin-bottom: 28px;
    position: relative;
    overflow: hidden;
}

    .formula-box::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        right: 0;
        height: 2px;
        background: linear-gradient(90deg, var(--accent), var(--cyan), var(--accent-dim));
    }

.formula-label {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 12px;
}

.formula-content {
    font-size: 18px;
    font-weight: 600;
    color: var(--accent-bright);
    letter-spacing: 0.5px;
}

    .formula-content .op {
        color: var(--text-muted);
        margin: 0 6px;
    }

    .formula-content .var {
        color: var(--cyan);
    }

    .formula-content .result {
        color: var(--warning);
    }

/* ─── INPUT GROUP ─── */
.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 20px;
    margin-bottom: 28px;
}

.input-group {
    position: relative;
}

    .input-group label {
        display: block;
        font-size: 12px;
        font-weight: 600;
        color: var(--text-secondary);
        text-transform: uppercase;
        letter-spacing: 1px;
        margin-bottom: 8px;
    }

    .input-group input, .input-group select {
        width: 100%;
        background: var(--bg-primary);
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 14px 16px;
        font-size: 16px;
        font-weight: 500;
        color: var(--text-primary);
        transition: all 0.3s ease;
        outline: none;
    }

        .input-group input:focus, .input-group select:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-dim);
        }

.input-unit {
    position: absolute;
    right: 14px;
    top: 42px;
    font-size: 12px;
    color: var(--text-muted);
}

/* ─── RESULTS ─── */
.results-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-top: 24px;
}

.result-card {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    text-align: center;
    transition: all 0.3s ease;
}

    .result-card:hover {
        transform: translateY(-2px);
        border-color: var(--accent-dim);
    }

    .result-card.highlight-green {
        border-left: 3px solid var(--accent);
    }

    .result-card.highlight-blue {
        border-left: 3px solid var(--blue);
    }

    .result-card.highlight-purple {
        border-left: 3px solid var(--purple);
    }

    .result-card.highlight-orange {
        border-left: 3px solid var(--orange);
    }

    .result-card.highlight-danger {
        border-left: 3px solid var(--danger);
    }

.result-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
}

.result-value {
    font-size: 28px;
    font-weight: 700;
}

    .result-value.green {
        color: var(--accent);
    }

    .result-value.blue {
        color: var(--blue);
    }

    .result-value.purple {
        color: var(--purple);
    }

    .result-value.orange {
        color: var(--orange);
    }

    .result-value.danger {
        color: var(--danger);
    }

.result-sub {
    font-size: 11px;
    color: var(--text-muted);
    margin-top: 4px;
}

/* ─── GAUGE ─── */
.gauge-container {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: 32px 0;
}

.gauge-wrap {
    position: relative;
    width: 220px;
    height: 130px;
}

.gauge-svg {
    width: 220px;
    height: 130px;
}

.gauge-bg {
    fill: none;
    stroke: var(--border);
    stroke-width: 14;
    stroke-linecap: round;
}

.gauge-fill {
    fill: none;
    stroke-width: 14;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s ease, stroke 0.5s ease;
}

.gauge-text {
    position: absolute;
    bottom: 8px;
    left: 50%;
    transform: translateX(-50%);
    text-align: center;
}

.gauge-percent {
    font-size: 36px;
    font-weight: 700;
    line-height: 1;
}

.gauge-label-text {
    font-size: 11px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ─── STATUS BAR ─── */
.status-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 16px 20px;
    border-radius: 10px;
    margin-top: 20px;
    font-size: 14px;
    font-weight: 500;
}

    .status-bar.ok {
        background: #008ed444;
        border: 1px solid #008ed444;
        color: var(--accent);
    }

    .status-bar.warning {
        background: #ffa50212;
        border: 1px solid #ffa50244;
        color: var(--warning);
    }

    .status-bar.danger {
        background: #ff475712;
        border: 1px solid #ff475744;
        color: var(--danger);
    }

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    animation: pulse 2s infinite;
}

.status-bar.ok .status-dot {
    background: var(--accent);
}

.status-bar.warning .status-dot {
    background: var(--warning);
}

.status-bar.danger .status-dot {
    background: var(--danger);
}

/* ─── SUPPLIER TABLE ─── */
.supplier-table-wrap {
    overflow-x: auto;
    margin: 20px 0;
    scrollbar-width: thin;
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 14px;
}

thead th {
    background: var(--bg-primary);
    padding: 14px 16px;
    text-align: left;
    font-size: 11px;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-bottom: 2px solid var(--border);
    position: sticky;
    top: 0;
}

tbody td {
    padding: 14px 16px;
    border-bottom: 1px solid var(--border);
    color: var(--text-primary);
}

tbody tr {
    transition: background 0.2s ease;
}

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

tbody td input {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 8px 12px;
    font-size: 14px;
    color: var(--text-primary);
    width: 100px;
    outline: none;
    transition: all 0.2s ease;
}

    tbody td input:focus {
        border-color: var(--accent);
        box-shadow: 0 0 0 2px var(--accent-dim);
    }

.remove-btn {
    background: var(--danger-dim);
    border: 1px solid var(--danger);
    color: var(--danger);
    width: 28px;
    height: 28px;
    border-radius: 6px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

    .remove-btn:hover {
        background: var(--danger);
        color: white;
    }

/* ─── BUTTONS ─── */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 10px;
    
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent), var(--accent-dim));
    color: #ffffff
}

    .btn-primary:hover {
        transform: translateY(-2px);
        box-shadow: 0 8px 24px var(--accent-dim);
    }

.btn-secondary {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-secondary);
}

    .btn-secondary:hover {
        border-color: var(--accent);
        color: var(--accent);
    }

.btn-add {
    background: var(--accent-dim);
    border: 1px solid var(--accent);
    color: var(--accent);
}

    .btn-add:hover {
        background: var(--accent);
        color: var(--bg-primary);
    }

.btn-group {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
    margin-top: 20px;
}

/* ─── COMPARISON PANEL ─── */
.comparison-grid {
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    gap: 0;
    margin: 32px 0;
}

.comparison-col {
    padding: 28px;
    border-radius: 16px;
    text-align: center;
}

    .comparison-col.fast {
        background: linear-gradient(135deg, #00d4aa08, #00d4aa15);
        border: 1px solid var(--accent-dim);
    }

    .comparison-col.slow {
        background: linear-gradient(135deg, #ff475708, #ff475715);
        border: 1px solid var(--danger-dim);
    }

.comparison-vs {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 16px;
}

    .comparison-vs span {
        
        font-size: 18px;
        font-weight: 700;
        color: var(--text-muted);
    }

.comparison-title {
    
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 20px;
}

.comparison-col.fast .comparison-title {
    color: var(--accent);
}

.comparison-col.slow .comparison-title {
    color: var(--danger);
}

.comparison-items {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.comparison-item {
    font-size: 14px;
    padding: 10px 16px;
    border-radius: 8px;
    background: var(--bg-primary);
}

.comparison-col.fast .comparison-item {
    color: var(--accent);
    border: 1px solid var(--accent-dim);
}

.comparison-col.slow .comparison-item {
    color: var(--danger);
    border: 1px solid var(--danger-dim);
}

/* ─── CHART ─── */
.chart-container {
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin: 24px 0;
    position: relative;
}

.bar-chart {
    display: flex;
    align-items: flex-end;
    gap: 12px;
    height: 260px;
    padding: 20px 0 40px;
}

.bar-group {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    height: 100%;
    justify-content: flex-end;
}

.bar {
    width: 100%;
    max-width: 60px;
    border-radius: 6px 6px 0 0;
    transition: height 1s ease;
    position: relative;
    min-height: 4px;
}

.bar-val {
    position: absolute;
    top: -22px;
    left: 50%;
    transform: translateX(-50%);
    
    font-size: 11px;
    font-weight: 600;
    white-space: nowrap;
}

.bar-label {
    
    font-size: 10px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
    position: absolute;
    bottom: -30px;
    width: 120%;
    left: -10%;
}

/* ─── ALGORITHM ─── */
.algo-box {
    background: #0c111d;
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    margin: 24px 0;
    overflow-x: auto;
}

    .algo-box pre {
        font-size: 13px;
        line-height: 1.8;
        color: var(--text-secondary);
        scrollbar-width: thin;
        scrollbar-color: #08b4d9 #ffffff;
        background: #161d2e;
    }

    .algo-box .kw {
        color: var(--purple);
        font-weight: 600;
    }

    .algo-box .fn {
        color: var(--cyan);
    }

    .algo-box .cm {
        color: var(--text-muted);
        font-style: italic;
    }

    .algo-box .str {
        color: var(--accent);
    }

    .algo-box .num {
        color: var(--orange);
    }

    .algo-box .op {
        color: var(--text-muted);
    }

/* ─── IMPACT SECTION ─── */
.impact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 20px;
    margin: 24px 0;
}

.impact-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 24px;
    position: relative;
    overflow: hidden;
}

    .impact-card::before {
        content: '';
        position: absolute;
        top: 0;
        left: 0;
        width: 3px;
        height: 100%;
    }

    .impact-card.ic1::before {
        background: var(--danger);
    }

    .impact-card.ic2::before {
        background: var(--warning);
    }

    .impact-card.ic3::before {
        background: var(--orange);
    }

    .impact-card.ic4::before {
        background: var(--purple);
    }

    .impact-card.ic5::before {
        background: var(--blue);
    }

    .impact-card.ic6::before {
        background: var(--cyan);
    }

.impact-icon {
    font-size: 24px;
    margin-bottom: 12px;
}

.impact-title {
    color: #ffffff;
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
}

.impact-desc {
    font-size: 13px;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* ─── ACTION ITEMS ─── */
.action-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin: 20px 0;
}

.action-item {
    display: flex;
    align-items: flex-start;
    gap: 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    transition: all 0.3s ease;
}

    .action-item:hover {
        border-color: var(--accent-dim);
        transform: translateX(4px);
    }

.action-priority {
    
    font-size: 11px;
    font-weight: 700;
    padding: 4px 10px;
    border-radius: 6px;
    white-space: nowrap;
    flex-shrink: 0;
}

    .action-priority.p1 {
        background: #ff475722;
        color: var(--danger);
        border: 1px solid var(--danger);
    }

    .action-priority.p2 {
        background: #ffa50222;
        color: var(--warning);
        border: 1px solid var(--warning);
    }

    .action-priority.p3 {
        background: #3b82f622;
        color: var(--blue);
        border: 1px solid var(--blue);
    }

.action-text {
    font-size: 14px;
    line-height: 1.5;
    color: #ffffff;
}

    .action-text strong {
        color: var(--text-primary);
        font-weight: 600;
    }

/* ─── RESPONSIVE ─── */
@media (max-width: 768px) {
    .bar-label {
        bottom: -50px;
    }
    .container {
        padding: 0 16px;
    }

    .hero {
        padding: 48px 0 40px;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }

    .comparison-vs {
        padding: 12px 0;
    }

    .hero-stats {
        gap: 24px;
    }

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

    .bar-chart {
        height: 200px;
    }
    .bar-val {
        font-size: 12px;
        top: -40px;
        left: -12px;
        transform: rotate(90deg);
    }
    .formula-label{
        margin-bottom: 50px!important;
    }

}

/* ─── TAB SYSTEM ─── */
.tab-nav {
    display: flex;
    gap: 4px;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 4px;
    margin-bottom: 28px;
    overflow-x: auto;
    scrollbar-width: thin;
}

.tab-btn {
    flex: 1;
    padding: 12px 20px;
    border: none;
    background: transparent;
    color: var(--text-muted);
    
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    cursor: pointer;
    border-radius: 8px;
    transition: all 0.3s ease;
    white-space: nowrap;
    text-align: center;
}

    .tab-btn.active {
        background: var(--accent);
        color: #ffffff;
    }

    .tab-btn:hover:not(.active) {
        color: var(--text-primary);
        background: var(--bg-card);
    }

.tab-panel {
    display: none;
}

    .tab-panel.active {
        display: block;
    }

/* Scroll margin for printing */
@media print {
    .card {
        break-inside: avoid;
    }

    body::before {
        display: none;
    }
}