:root {
    --hc-primary: #2563eb;
    --hc-secondary: #18316A;
    --hc-dark: #0f172a;
    --hc-light: #f8fafc;
    --hc-text-main: #1e293b;
    --hc-text-muted: #64748b;
}

/* Premium Tunnel IP Styles */

/* Hero */
.hero-premium {
    background: var(--hc-secondary);
    padding: 120px 0 80px;
    position: relative;
    overflow: hidden;
    color: #fff;
    text-align: center;
}

@media (max-width: 991px) {
    .process-timeline::before {
        left: 30px;
    }

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

    .hero-desc-premium {
        margin: 0 auto 40px;
    }

    .calculator-grid {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .calculator-card-premium {
        padding: 30px;
    }
}

.hero-premium::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at 50% 50%, rgba(37, 99, 235, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-title-premium {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 900;
    line-height: 1.1;
    letter-spacing: -0.04em;
    margin-bottom: 25px;
    color: #fff !important;
}

.hero-desc-premium {
    font-size: 1.25rem;
    color: #cbd5e1;
    max-width: 800px;
    line-height: 1.6;
    margin: 0 auto 40px;
}

/* Section Common */
.section-premium {
    padding: 100px 0;
}

.section-head {
    text-align: center;
    margin-bottom: 60px;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--hc-dark);
    letter-spacing: -1px;
    margin-bottom: 10px;
}

.section-subtitle {
    color: var(--hc-primary);
    font-size: 1.15rem;
    font-weight: 700;
}

/* Feature Cards */
.feature-card-premium {
    background: #fff;
    padding: 40px 30px;
    border-radius: 24px;
    border: 1px solid #f1f5f9;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.03);
    transition: all 0.3s ease;
    height: 100%;
}

.feature-card-premium:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(37, 99, 235, 0.1);
    border-color: var(--hc-primary);
}

.feature-icon-premium {
    width: 60px;
    height: 60px;
    background: #eff6ff;
    color: var(--hc-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 25px;
}

.feature-card-premium h3 {
    font-size: 1.25rem;
    font-weight: 800;
    margin-bottom: 15px;
    color: var(--hc-dark);
}

.feature-card-premium p {
    color: var(--hc-text-main);
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 0;
}

/* Calculator Card */
.calculator-card-premium {
    background: #fff;
    border-radius: 28px;
    padding: 40px;
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.07);
    border: 1px solid #f1f5f9;
    max-width: 1200px;
    margin: 0 auto;
}

.calculator-grid {
    display: grid;
    grid-template-columns: 1fr 340px;
    gap: 50px;
    align-items: center;
}

.calculator-title {
    font-size: 2rem;
    font-weight: 900;
    margin-bottom: 40px;
    color: var(--hc-dark);
}

.slider-group {
    margin-bottom: 35px;
}

.slider-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 700;
    color: var(--hc-dark);
    margin-bottom: 5px;
    font-size: 1rem;
}

.slider-desc {
    font-size: 0.85rem;
    color: var(--hc-text-muted);
    margin-bottom: 15px;
}

/* Custom Range Input */
.custom-range {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 6px;
    background: #f1f5f9;
    border-radius: 10px;
    outline: none;
    margin: 10px 0;
}

.custom-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--hc-primary);
    border: 3px solid #fff;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(37, 99, 235, 0.25);
}

.price-summary-box {
    background: #f8fafc;
    border-radius: 24px;
    padding: 35px;
    border: 1px solid #edf2f7;
    display: flex;
    flex-direction: column;
}

.summary-title {
    font-size: 0.9rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--hc-text-muted);
    margin-bottom: 25px;
}

.price-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

.price-label {
    font-weight: 500;
    color: var(--hc-text-main);
}

.price-value {
    font-weight: 800;
    color: var(--hc-dark);
}

.total-box {
    margin: 25px 0;
    padding-top: 25px;
    border-top: 1px solid #e2e8f0;
}

.total-label {
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--hc-text-main);
    display: block;
    margin-bottom: 8px;
}

.price-total {
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--hc-primary);
    line-height: 1;
}

.install-text {
    font-size: 0.85rem;
    color: #059669;
    font-weight: 700;
    margin-top: 12px;
    display: flex;
    align-items: center;
}

.install-text i {
    font-size: 0.7rem;
    margin-right: 6px;
}

.calc-btn-primary {
    background: var(--hc-primary);
    color: #fff;
    padding: 14px;
    border-radius: 12px;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    display: block;
    transition: all 0.3s;
    box-shadow: 0 4px 12px rgba(37, 99, 235, 0.2);
}

.calc-btn-primary:hover {
    background: #1e40af;
    color: #fff;
    transform: translateY(-2px);
}

.calc-btn-secondary {
    background: transparent;
    color: var(--hc-text-muted);
    padding: 12px;
    border-radius: 12px;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
    margin-top: 10px;
}

.calc-btn-secondary:hover {
    background: #f1f5f9;
    color: var(--hc-dark);
}

/* Protocol Cards */
.protocol-card-premium {
    background: #fff;
    padding: 30px;
    border-radius: 20px;
    border: 1px solid #f1f5f9;
    display: flex;
    gap: 20px;
    align-items: center;
    transition: all 0.3s;
}

.protocol-card-premium:hover {
    border-color: var(--hc-primary);
    background: #f8fafc;
}

.protocol-icon-sm {
    width: 50px;
    height: 50px;
    background: #f1f5f9;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.2rem;
    color: var(--hc-primary);
    flex-shrink: 0;
}

/* Process Steps */
.process-step-premium {
    display: flex;
    gap: 30px;
    margin-bottom: 40px;
    position: relative;
    z-index: 1;
}

.step-num {
    width: 50px;
    height: 50px;
    background: #fff;
    border: 2px solid var(--hc-primary);
    color: var(--hc-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    flex-shrink: 0;
    font-size: 1.1rem;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.05);
}

.step-content-premium h4 {
    font-weight: 800;
    margin-bottom: 10px;
    color: var(--hc-dark);
}

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

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

.animate-fade-in-up {
    animation: fadeInUp 0.6s ease-out;
}