body {
    padding-top: 80px;
    color: #333;
    line-height: 1.6;
    background: var(--soft-grad-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility
}

:root {
    --arka-dark: #031108;
    --arka-green: #0a5c2b;
    --arka-gold: #f1c40f;
    --glass: rgba(255, 255, 255, 0.95)
}

.premium-calc-hero {
    background: linear-gradient(135deg, #031108 0, #0a5c2b 100%);
    padding: 160px 5% 100px;
    text-align: center;
    color: #fff
}

.ultra-badge {
    background: rgba(241, 196, 15, .2);
    color: var(--arka-gold);
    padding: 8px 20px;
    border-radius: 50px;
    font-size: .85rem;
    font-weight: 800;
    border: 1px solid var(--arka-gold);
    display: inline-block;
    margin-bottom: 20px
}

.text-gradient {
    background: linear-gradient(90deg, #fff, var(--arka-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent
}

.arka-pro-dashboard {
    max-width: 1250px;
    margin: -60px auto 100px;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 30px;
    padding: 0 20px
}

.glass-card,
.result-dashboard {
    background: var(--glass);
    backdrop-filter: blur(15px);
    border-radius: 30px;
    padding: 35px;
    box-shadow: 0 25px 50px rgba(0, 0, 0, .1);
    border: 1px solid rgba(255, 255, 255, .4)
}

.card-title {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px
}

.step-num {
    width: 40px;
    height: 40px;
    background: var(--arka-green);
    color: #fff;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 900
}

.ai-analyze-btn,
.whatsapp-premium {
    font-weight: 800;
    gap: 10px;
    color: #fff
}

.bill-helper {
    background: rgba(255, 255, 255, .03);
    border: 1px dashed rgba(241, 196, 15, .3);
    padding: 15px;
    border-radius: 12px;
    margin-bottom: 25px;
    margin-top: 10px;
    clear: both
}

.bill-helper p {
    font-size: 14px;
    color: #000;
    margin-bottom: 10px
}

#billDownloader {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 12px;
    transition: .4s
}

.form-row {
    display: grid;
    gap: 20px;
    margin-bottom: 20px
}

.two-col {
    grid-template-columns: 1fr 1fr
}

.three-col {
    grid-template-columns: 1fr 1fr 1fr
}

.input-field label {
    display: block;
    font-size: .85rem;
    font-weight: 700;
    margin-bottom: 8px;
    color: #475569
}

#finalCost,
#systemSize,
.result-placeholder h3 {
    color: var(--arka-gold)
}

.input-field input,
.input-field select {
    width: 100%;
    padding: 12px 15px;
    border-radius: 12px;
    border: 1.5px solid #e2e8f0;
    background: #f8fafc;
    font-weight: 600;
    transition: .3s
}

.input-field input:focus {
    border-color: var(--arka-green);
    background: #fff;
    box-shadow: 0 0 15px rgba(10, 92, 43, .1)
}

.result-dashboard {
    background: #0f172a;
    color: #fff;
    position: sticky;
    top: 100px;
    height: fit-content
}

.res-card {
    background: rgba(255, 255, 255, .05);
    border: 1px solid rgba(255, 255, 255, .1);
    padding: 20px;
    border-radius: 20px;
    margin-bottom: 15px
}

.result-placeholder {
    text-align: center;
    padding: 60px 20px;
    opacity: .8
}

.result-placeholder img {
    width: 100%;
    max-width: 480px;
    margin: 0 auto 20px;
    opacity: .9;
    filter: drop-shadow(0 10px 25px rgba(241, 196, 15, .3))
}

.calc-preview-img {
    width: 100%;
    max-width: 600px;
    height: auto;
    display: block;
    margin: 0 auto;
    border-radius: 15px;
    object-fit: contain
}

.result-placeholder h3 {
    margin-bottom: 6px;
    font-size: 16px;
    font-weight: 700
}

.result-placeholder p {
    font-size: 12.5px;
    color: #bbb;
    line-height: 1.4;
    max-width: 250px;
    margin: 0 auto
}

.result-content {
    animation: .6s fadeIn
}

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

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

.primary-highlight {
    background: linear-gradient(135deg, #0a5c2b 0, #064e3b 100%);
    display: flex;
    justify-content: space-between;
    align-items: center
}

.full-width {
    grid-column: 1/-1
}

.res-main-icon {
    font-size: 2.5rem;
    color: rgba(255, 255, 255, .2)
}

#systemSize {
    font-size: 2.2rem
}

.final-investment-card {
    background: rgba(241, 196, 15, .1);
    border: 1px solid var(--arka-gold);
    text-align: center
}

#finalCost {
    font-size: 2.8rem;
    font-weight: 900;
    margin: 10px 0
}

.payback-status {
    background: var(--arka-gold);
    color: var(--arka-dark);
    padding: 5px 15px;
    border-radius: 50px;
    font-weight: 800;
    font-size: .9rem
}

.bill-upload-zone {
    border: 2px dashed #cbd5e1;
    padding: 20px;
    border-radius: 15px;
    text-align: center;
    margin-bottom: 30px;
    background: #fbfcfd;
    cursor: pointer
}

.icon-pulse i {
    font-size: 2rem;
    color: var(--arka-green);
    animation: 2s infinite pulse
}

.ai-analyze-btn {
    background: rgba(10, 92, 43, .8);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, .3);
    transition: .4s;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    pointer-events: auto !important
}

.ai-analyze-btn:active {
    transform: scale(.95)
}

.ai-analyze-btn:disabled {
    opacity: .6;
    cursor: not-allowed;
    filter: grayscale(.5);
    pointer-events: none
}

.ai-analyze-btn:hover {
    background: #0a5c2b;
    box-shadow: 0 0 20px rgba(10, 92, 43, .5);
    border-color: #f1c40f
}

.particle {
    position: absolute;
    background: #fff;
    border-radius: 50%;
    pointer-events: none;
    opacity: 0
}

@keyframes flyAway {
    0% {
        transform: translate(0, 0);
        opacity: 1
    }

    100% {
        transform: translate(var(--x), var(--y));
        opacity: 0
    }
}

.shimmer {
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, .2), transparent);
    animation: 2.5s infinite shimmer
}

@keyframes shimmer {
    100% {
        left: 100%
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 1
    }

    50% {
        transform: scale(1.2);
        opacity: .7
    }
}

.ai-analyze-btn {
    width: 100%;
    padding: 20px;
    background: var(--arka-green);
    border: none;
    border-radius: 15px;
    font-size: 1.1rem;
    cursor: pointer;
    position: relative;
    overflow: hidden
}

.whatsapp-premium {
    background: #25d366;
    padding: 15px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-top: 20px
}

@media (max-width:992px) {

    .arka-pro-dashboard,
    .three-col,
    .two-col {
        grid-template-columns: 1fr
    }

    body {
        padding-top: 0 !important;
        margin-top: 0 !important
    }

    .arka-pro-dashboard {
        margin-top: -30px
    }

    .result-dashboard {
        position: relative;
        top: 0
    }

    .result-placeholder img {
        max-width: 260px
    }

    .premium-calc-hero h1 {
        font-size: 2.2rem
    }
}

@media (max-width:768px) {
    .three-col {
        grid-template-columns: 1fr !important
    }
}