/* =========================================
   GRAND PROJECT COST CALCULATOR
   ========================================= */

.calculator-section {
    background: linear-gradient(160deg, #0A192F 0%, #0d1f3c 50%, #0A192F 100%);
    position: relative;
    overflow: hidden;
}

/* Ambient Glow Orbs */
.calc-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(90px);
    opacity: 0.35;
    pointer-events: none;
}
.calc-orb-1 {
    width: 500px; height: 500px;
    background: radial-gradient(circle, rgba(212,175,55,0.5) 0%, transparent 70%);
    top: -150px; right: -100px;
    animation: calc-float 14s ease-in-out infinite alternate;
}
.calc-orb-2 {
    width: 400px; height: 400px;
    background: radial-gradient(circle, rgba(30,58,138,0.6) 0%, transparent 70%);
    bottom: -120px; left: -100px;
    animation: calc-float 18s ease-in-out infinite alternate-reverse;
}
@keyframes calc-float {
    0% { transform: translate(0,0) scale(1); }
    100% { transform: translate(40px, -30px) scale(1.15); }
}

/* Subtle Tech Grid Overlay */
.calc-grid-overlay {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(212,175,55,0.05) 1px, transparent 1px),
        linear-gradient(90deg, rgba(212,175,55,0.05) 1px, transparent 1px);
    background-size: 60px 60px;
    pointer-events: none;
    -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
    mask-image: radial-gradient(ellipse at center, black 30%, transparent 75%);
}

/* Header Elements */
.calc-badge {
    display: inline-block;
    padding: 0.55rem 1.4rem;
    border: 1px solid rgba(212,175,55,0.4);
    background: rgba(212,175,55,0.08);
    color: var(--elegant-gold);
    border-radius: 50px;
    font-family: var(--font-display);
    font-size: 0.8rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
}

.calc-title {
    color: var(--crisp-white);
    font-size: clamp(2rem, 4.5vw, 3.25rem);
    letter-spacing: -0.02em;
}

.calc-subtitle {
    color: rgba(255,255,255,0.6);
    max-width: 560px;
    margin: 0.9rem auto 0;
}

/* =========================================
   GLASS CALCULATOR CARD
   ========================================= */
.calculator-card {
    background: rgba(255,255,255,0.04);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    border: 1px solid rgba(255,255,255,0.09);
    border-radius: 24px;
    padding: 2.5rem;
    box-shadow: 0 30px 80px rgba(0,0,0,0.35);
}

.calc-step {
    padding-bottom: 2.25rem;
    margin-bottom: 2.25rem;
    border-bottom: 1px solid rgba(255,255,255,0.07);
}
.calc-step:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.step-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.4rem;
}

.step-number {
    width: 46px; height: 46px; flex-shrink: 0;
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--elegant-gold), var(--elegant-gold-hover));
    color: #0A192F;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.95rem;
    box-shadow: 0 6px 20px rgba(212,175,55,0.35);
}

.step-title { color: var(--crisp-white); font-size: 1.15rem; }
.step-hint { color: rgba(255,255,255,0.45); font-size: 0.82rem; }

.calc-placeholder {
    grid-column: 1 / -1;
    color: rgba(255,255,255,0.4);
    font-size: 0.9rem;
    padding: 1.1rem;
    border: 1px dashed rgba(255,255,255,0.15);
    border-radius: 14px;
    text-align: center;
}

/* =========================================
   STEP 1: SERVICE TILES
   ========================================= */
.service-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
}

.service-option {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
    padding: 1.6rem 1rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 16px;
    color: rgba(255,255,255,0.85);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.98rem;
    cursor: pointer;
    transition: var(--transition);
}

.service-option i {
    font-size: 1.9rem;
    color: var(--elegant-gold);
    transition: var(--transition);
}

.service-option:hover {
    transform: translateY(-4px);
    border-color: rgba(212,175,55,0.5);
    background: rgba(212,175,55,0.08);
    box-shadow: 0 12px 30px rgba(0,0,0,0.3);
}

.service-option:hover i { transform: scale(1.15); }

.service-option.active {
    background: linear-gradient(135deg, rgba(212,175,55,0.18), rgba(212,175,55,0.06));
    border-color: var(--elegant-gold);
    box-shadow: 0 0 0 1px var(--elegant-gold), 0 12px 35px rgba(212,175,55,0.25);
    color: var(--crisp-white);
}

/* =========================================
   STEP 2: SCOPE OPTIONS
   ========================================= */
.scope-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.9rem;
}

.scope-option {
    padding: 1.1rem 1.2rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.scope-option strong { display: block; color: var(--crisp-white); font-size: 0.98rem; margin-bottom: 0.2rem; }
.scope-option small { color: rgba(255,255,255,0.5); font-size: 0.8rem; }

.scope-option:hover {
    border-color: rgba(212,175,55,0.5);
    transform: translateY(-2px);
    background: rgba(255,255,255,0.06);
}

.scope-option.active {
    border-color: var(--elegant-gold);
    background: rgba(212,175,55,0.1);
    box-shadow: 0 8px 24px rgba(212,175,55,0.15);
}

/* =========================================
   STEP 3: ADD-ONS
   ========================================= */
.addon-options {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.9rem;
}

.addon-option {
    display: flex;
    align-items: center;
    gap: 0.85rem;
    padding: 0.95rem 1.1rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.addon-checkbox {
    width: 22px; height: 22px; flex-shrink: 0;
    border: 2px solid rgba(255,255,255,0.35);
    border-radius: 6px;
    display: flex; align-items: center; justify-content: center;
    transition: var(--transition);
}

.addon-option.active .addon-checkbox {
    background: var(--elegant-gold);
    border-color: var(--elegant-gold);
}

.addon-option.active .addon-checkbox::after {
    content: '✓';
    color: #0A192F;
    font-weight: 800;
    font-size: 0.8rem;
}

.addon-info strong { display: block; color: var(--crisp-white); font-size: 0.92rem; }
.addon-info small { color: var(--elegant-gold); font-weight: 600; font-size: 0.8rem; }

.addon-option:hover { border-color: rgba(212,175,55,0.5); background: rgba(255,255,255,0.06); }
.addon-option.active { border-color: var(--elegant-gold); background: rgba(212,175,55,0.08); }

/* =========================================
   STEP 4: TIMELINE
   ========================================= */
.timeline-options {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 0.9rem;
}

.timeline-option {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 0.6rem;
    padding: 1.2rem;
    background: rgba(255,255,255,0.04);
    border: 1px solid rgba(255,255,255,0.1);
    border-radius: 14px;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}

.timeline-option i { font-size: 1.5rem; color: var(--elegant-gold); transition: var(--transition); }
.timeline-option strong { display: block; color: var(--crisp-white); font-size: 0.95rem; }
.timeline-option small { color: rgba(255,255,255,0.5); font-size: 0.78rem; }

.timeline-option:hover {
    transform: translateY(-3px);
    border-color: rgba(212,175,55,0.5);
    background: rgba(255,255,255,0.06);
}

.timeline-option.active {
    border-color: var(--elegant-gold);
    background: rgba(212,175,55,0.1);
    box-shadow: 0 10px 28px rgba(212,175,55,0.18);
}

/* =========================================
   LIVE PRICE PANEL (The Crown Jewel)
   ========================================= */
.price-display {
    background: linear-gradient(160deg, rgba(212,175,55,0.12), rgba(255,255,255,0.03) 40%), rgba(10,25,47,0.6);
    border: 1px solid rgba(212,175,55,0.35);
    border-radius: 24px;
    padding: 2.5rem 2rem;
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    box-shadow: 0 30px 80px rgba(0,0,0,0.4), inset 0 1px 0 rgba(255,255,255,0.08);
    position: relative;
    overflow: hidden;
}

.price-display::before {
    content: '';
    position: absolute;
    top: -80px; right: -80px;
    width: 260px; height: 260px;
    background: radial-gradient(circle, rgba(212,175,55,0.25), transparent 70%);
    border-radius: 50%;
    pointer-events: none;
}

.price-header h5 { color: var(--crisp-white); font-size: 1.25rem; }
.price-header p { color: rgba(255,255,255,0.5); }

.price-range {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1.6rem 1.25rem;
    background: rgba(0,0,0,0.25);
    border: 1px solid rgba(212,175,55,0.25);
    border-radius: 16px;
    margin-bottom: 1.25rem;
}

.price-min small, .price-max small {
    display: block;
    color: rgba(255,255,255,0.5);
    font-size: 0.72rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-bottom: 0.4rem;
}

.price-min span, .price-max span {
    display: block;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: clamp(1.4rem, 2.2vw, 1.8rem);
    color: var(--elegant-gold);
    text-shadow: 0 0 24px rgba(212,175,55,0.45);
}

.price-divider { color: rgba(255,255,255,0.25); font-size: 1.4rem; }

.price-breakdown {
    background: rgba(0,0,0,0.2);
    border-radius: 14px;
    padding: 1.1rem 1.25rem;
    margin-bottom: 1.4rem;
    min-height: 96px;
}

.price-breakdown .text-muted { color: rgba(255,255,255,0.5) !important; }

.breakdown-item {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding: 0.45rem 0;
    font-size: 0.88rem;
    color: rgba(255,255,255,0.7);
    border-bottom: 1px dashed rgba(255,255,255,0.08);
}
.breakdown-item:last-child { border-bottom: none; }
.breakdown-item strong { color: var(--elegant-gold); }

.price-cta .btn-gold { box-shadow: 0 10px 30px rgba(212,175,55,0.35); }

.price-guarantee {
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 1.1rem;
    color: rgba(255,255,255,0.55);
}

/* =========================================
   RESPONSIVE
   ========================================= */
@media (max-width: 991px) {
    .price-display { position: static !important; margin-top: 1rem; }
}

@media (max-width: 768px) {
    .calculator-card { padding: 1.6rem; }
    .service-options,
    .scope-options,
    .addon-options,
    .timeline-options { grid-template-columns: 1fr; }
    .price-range { flex-direction: column; gap: 0.9rem; }
    .price-divider { display: none; }
}