@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&family=Inter:wght@400;500;600;700&display=swap');

#smart-toll-calculator-pro {
    /* Premium Polish v1.3 Design Tokens */
    --primary-color: #00E676;
    /* Vibrant Neon Emerald */
    --primary-hover: #00C853;
    --primary-glow: rgba(0, 230, 118, 0.25);
    --primary-gradient: linear-gradient(135deg, #00E676 0%, #00BFA5 100%);

    --bg-app: linear-gradient(180deg, #F9FAFB 0%, #F3F4F6 100%);
    --surface: #FFFFFF;
    --border-card: rgba(229, 231, 235, 0.8);
    --text-main: #0B1020;
    /* Fixed: High contrast for light mode */
    --text-muted: #475569;
    /* Slightly darker for better contrast */

    --shadow-premium: 10px 40px rgba(0,0,0,0.4); /* Enhanced for depth */
    --shadow-glow: 0 0 20px var(--primary-glow);

    font-family: 'Inter', sans-serif;
    color: var(--text-main);
    line-height: 1.5;
    width: 100%;
    max-width: 900px;
    margin: 3rem auto;
    box-shadow: 0 10px 40px rgba(0,0,0,0.25); /* Subtle main container depth */
    padding: 0;
    box-sizing: border-box;
    background: var(--bg-app);
    border-radius: 1.5rem;
    overflow: hidden;
    position: relative;
}

#smart-toll-calculator-pro::before {
    content: "";
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    opacity: 0.03;
    pointer-events: none;
    background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

#smart-toll-calculator-pro[data-theme="dark"] {
    --bg-app: radial-gradient(circle at 50% 0%, #1E293B 0%, #020617 100%);
    --surface: #1E293B;
    --border-card: rgba(51, 65, 85, 0.5);
    --text-main: #F8FAFC;
    --text-muted: #94A3B8;
}

#smart-toll-calculator-pro * {
    box-sizing: border-box;
}

/* Header Section */
#smart-toll-calculator-pro .app-header {
    background: var(--surface);
    padding: 2.5rem 3.5rem;
    border-bottom: 1px solid var(--border-card);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#smart-toll-calculator-pro .title-section h1 {
    font-family: 'Outfit', sans-serif;
    font-size: 2.4rem; /* Slightly increased for better focus */
    font-weight: 800;
    margin: 0;
    letter-spacing: -0.03em;
    color: var(--text-main);
}

#smart-toll-calculator-pro .highlight-green {
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 0 5px var(--primary-glow));
    font-weight: 800;
}

#smart-toll-calculator-pro .premium-tag {
    color: var(--primary-color);
    text-shadow: 0 0 10px var(--primary-glow);
}

#smart-toll-calculator-pro .title-section p {
    color: var(--text-muted);
    font-size: 1rem;
    margin-top: 0.5rem;
    margin-bottom: 0.5rem; /* Better spacing below subtitle */
    font-weight: 500;
}

#smart-toll-calculator-pro #theme-toggle {
    background: rgba(0, 0, 0, 0.05);
    border: 1px solid var(--border-card);
    color: var(--text-main);
    width: 44px;
    height: 44px;
    border-radius: 12px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#smart-toll-calculator-pro[data-theme="dark"] #theme-toggle {
    background: rgba(255, 255, 255, 0.05);
}

#smart-toll-calculator-pro #theme-toggle:hover {
    transform: scale(1.1);
    background: var(--primary-color);
    color: white;
    box-shadow: var(--shadow-glow);
}

/* Calculator Card */
#smart-toll-calculator-pro .calc-card {
    background: var(--surface);
    margin: 2.5rem 3.5rem;
    padding: 3rem;
    border-radius: 1.5rem;
    border: 1.5px solid var(--border-card);
    box-shadow: var(--shadow-premium);
    position: relative;
}

/* Form Groups */
#smart-toll-calculator-pro .form-group {
    margin-bottom: 2rem;
}

#smart-toll-calculator-pro .form-group label {
    display: block;
    margin-bottom: 0.8rem;
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
}

#smart-toll-calculator-pro .search-box {
    position: relative;
}

#smart-toll-calculator-pro .search-box input {
    width: 100%;
    padding: 1rem 1.25rem 1rem 3.5rem;
    background: var(--bg-app);
    border: 2px solid var(--border-card);
    border-radius: 1rem;
    color: var(--text-main) !important;
    font-size: 1.05rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

#smart-toll-calculator-pro .search-box input::placeholder {
    color: #6B7280;
    opacity: 1;
}

#smart-toll-calculator-pro[data-theme="dark"] .search-box input::placeholder {
    color: var(--text-muted);
    opacity: 0.6;
}

#smart-toll-calculator-pro .search-box i {
    position: absolute;
    left: 1.25rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
    font-size: 1.1rem;
}

#smart-toll-calculator-pro .search-box input:focus {
    outline: none;
    background: var(--surface);
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px var(--primary-glow);
}

/* Dropdown */
#smart-toll-calculator-pro .search-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    left: 0;
    width: 100%;
    background: var(--surface);
    border: 1.5px solid var(--border-card);
    border-radius: 1rem;
    max-height: 280px;
    overflow-y: auto;
    z-index: 100;
    display: none;
    box-shadow: var(--shadow-premium);
}

#smart-toll-calculator-pro .search-dropdown.active {
    display: block;
    animation: STCP_popIn 0.2s ease-out;
}

@keyframes STCP_popIn {
    from {
        opacity: 0;
        transform: translateY(-10px) scale(0.98);
    }

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


#smart-toll-calculator-pro .expr-group-header {
    background: rgba(0, 0, 0, 0.03);
    padding: 0.6rem 1.5rem;
    font-size: 0.75rem;
    font-weight: 800;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-card);
}

[data-theme="dark"] #smart-toll-calculator-pro .expr-group-header {
    background: rgba(255, 255, 255, 0.05);
}

#smart-toll-calculator-pro .search-item {
    padding: 1rem 1.5rem;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-card);
    transition: background 0.2s ease;
}

#smart-toll-calculator-pro .search-item:hover {
    background: rgba(0, 230, 118, 0.05);
}

#smart-toll-calculator-pro .search-item .loc-name {
    font-weight: 600;
}

#smart-toll-calculator-pro .search-item .loc-expr {
    font-size: 0.75rem;
    background: rgba(0, 0, 0, 0.05);
    padding: 2px 8px;
    border-radius: 12px;
}

/* Vehicle Selection */
#smart-toll-calculator-pro .vehicle-selector {
    display: flex;
    gap: 1.25rem;
}

#smart-toll-calculator-pro .v-option {
    flex: 1;
}

#smart-toll-calculator-pro .v-option input {
    display: none;
}

#smart-toll-calculator-pro .v-label {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 1rem;
    background: var(--bg-app);
    border: 2px solid var(--border-card);
    border-radius: 1.2rem;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

#smart-toll-calculator-pro .v-label i {
    font-size: 1.5rem;
    margin-bottom: 0.6rem;
    color: var(--text-muted);
    transition: color 0.3s ease;
}

#smart-toll-calculator-pro .v-label span:first-of-type {
    font-weight: 700;
    font-size: 1rem;
}

#smart-toll-calculator-pro .v-label span:last-of-type {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.2rem;
    text-align: center;
}

#smart-toll-calculator-pro .v-option input:checked+.v-label {
    border-color: var(--primary-color);
    background: rgba(0, 230, 118, 0.03);
    box-shadow: 0 10px 20px -5px rgba(0, 230, 118, 0.15);
}

#smart-toll-calculator-pro .v-option input:checked+.v-label i {
    color: var(--primary-color);
}

/* Buttons Upgraded */
#smart-toll-calculator-pro .action-buttons {
    display: flex;
    gap: 1.5rem;
    margin-top: 3rem;
}

#smart-toll-calculator-pro .btn {
    padding: 1.1rem 2rem;
    border-radius: 1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: none;
    font-size: 1.1rem;
    font-family: 'Outfit', sans-serif;
    letter-spacing: 0.02em;
}

#smart-toll-calculator-pro .btn-primary {
    background: linear-gradient(135deg, #00E676, #00C853); /* Custom vibrant gradient */
    color: white !important;
    flex: 1;
    box-shadow: 0 4px 15px rgba(0, 230, 118, 0.2);
}

#smart-toll-calculator-pro .btn-primary:hover {
    background: linear-gradient(135deg, #00C853, #00E676); /* Inverted gradient on hover */
    transform: translateY(-3px) scale(1.04); /* Enhanced interaction */
    box-shadow: 0 8px 30px rgba(0, 230, 118, 0.4); /* Intense hover glow */
}

#smart-toll-calculator-pro .btn-secondary {
    background: var(--surface);
    color: var(--text-main) !important;
    border: 2px solid var(--border-card);
    flex: 1;
}

#smart-toll-calculator-pro .btn-secondary:hover {
    background: var(--bg-app);
    transform: translateY(-2px);
}

/* Result Section Premium */
#smart-toll-calculator-pro .result-area {
    margin: 0 3.5rem 4rem 3.5rem;
    animation: STCP_glideIn 0.5s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

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

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

#smart-toll-calculator-pro .summary-card {
    background: var(--surface);
    padding: 3.5rem; /* Increased spacing for better emphasis */
    border-radius: 1.5rem;
    border: 3px solid var(--primary-color); /* Stronger highlight border */
    box-shadow: 0 0 25px var(--primary-glow); /* More prominent glow */
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    overflow: hidden;
    gap: 2rem;
}

#smart-toll-calculator-pro .summary-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--primary-gradient);
}

#smart-toll-calculator-pro .route-info h3 {
    margin: 0;
    font-size: 1.7rem;
    font-family: 'Outfit', sans-serif;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 1rem;
}

#smart-toll-calculator-pro .route-info i {
    color: var(--primary-color);
    text-shadow: 0 0 8px var(--primary-glow);
}

#smart-toll-calculator-pro .route-meta-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-top: 0.85rem;
}

#smart-toll-calculator-pro .route-meta-badges span {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    background: rgba(0, 0, 0, 0.04);
    padding: 0.35rem 0.9rem;
    border-radius: 20px;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    border: 1px solid rgba(0, 230, 118, 0.1);
}

[data-theme="dark"] #smart-toll-calculator-pro .route-meta-badges span {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.05);
}

#smart-toll-calculator-pro .total-toll {
    text-align: right;
    flex-shrink: 0;
}

#smart-toll-calculator-pro .total-toll .label {
    display: block;
    font-size: 0.9rem;
    font-weight: 800;
    text-transform: uppercase;
    color: var(--text-muted);
    letter-spacing: 0.1em;
}

#smart-toll-calculator-pro .total-toll .amount {
    font-size: 4.2rem; /* Slightly reduced (from 5rem) to ensure single-line fit on desktop */
    font-weight: 800;
    color: #00E676;
    line-height: 1;
    font-family: 'Outfit', sans-serif;
    text-shadow: 0 0 15px var(--primary-glow);
    white-space: nowrap;
}

#smart-toll-calculator-pro .rfid-suggestion {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-top: 0.6rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 0.5rem;
    opacity: 0.9;
    white-space: nowrap;
}

#smart-toll-calculator-pro .rfid-suggestion b {
    color: var(--primary-color);
}

/* Collapsible Details */
#smart-toll-calculator-pro .details-toggle {
    margin-top: 2rem;
    text-align: center;
}

#smart-toll-calculator-pro .toggle-btn {
    background: var(--surface);
    border: 1.5px solid var(--border-card);
    color: var(--text-muted);
    padding: 0.75rem 2rem;
    border-radius: 3rem;
    cursor: pointer;
    font-weight: 700;
    transition: all 0.3s ease;
}

#smart-toll-calculator-pro .toggle-btn:hover {
    border-color: var(--primary-color);
    color: var(--text-main);
    box-shadow: 0 5px 15px var(--primary-glow);
}

#smart-toll-calculator-pro .collapsed-content {
    display: none;
    margin-top: 2rem;
    background: var(--surface);
    padding: 3rem;
    border-radius: 1.5rem;
    border: 1.5px solid var(--border-card);
    box-shadow: var(--shadow-premium);
    animation: STCP_slideDown 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes STCP_slideDown {
    from {
        opacity: 0;
        transform: translateY(-15px);
    }

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

#smart-toll-calculator-pro .collapsed-content.active {
    display: block;
}

/* Timeline Upgraded */
#smart-toll-calculator-pro .timeline-item {
    display: flex;
    gap: 2rem;
    position: relative;
    padding-bottom: 2.5rem;
}

#smart-toll-calculator-pro .timeline-item::before {
    content: '';
    position: absolute;
    left: 11px;
    top: 32px;
    bottom: 0;
    width: 3px;
    background: var(--border-card);
}

#smart-toll-calculator-pro .timeline-item:last-child::before {
    display: none;
}

#smart-toll-calculator-pro .dot {
    width: 25px;
    height: 25px;
    background: var(--surface);
    border: 4px solid var(--primary-color);
    border-radius: 50%;
    margin-top: 4px;
    flex-shrink: 0;
    box-shadow: 0 0 10px var(--primary-glow);
    z-index: 1;
}

#smart-toll-calculator-pro .node-info h4 {
    margin: 0;
    font-size: 1.15rem;
    font-weight: 700;
}

#smart-toll-calculator-pro .node-info span {
    color: var(--text-muted);
    font-size: 0.85rem;
}

#smart-toll-calculator-pro .segment-price {
    font-weight: 800;
    color: var(--primary-color);
    font-size: 1rem;
    background: rgba(0, 230, 118, 0.1);
    padding: 0.4rem 1.2rem;
    border-radius: 2rem;
}

/* Tool Footer */
#smart-toll-calculator-pro .tool-footer {
    display: flex;
    gap: 1.5rem;
    margin-top: 2.5rem;
    justify-content: flex-end;
}

#smart-toll-calculator-pro .tool-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-weight: 700;
    cursor: pointer;
    transition: color 0.2s ease;
}

#smart-toll-calculator-pro .tool-btn:hover {
    color: var(--primary-color);
}

/* Footer */
#smart-toll-calculator-pro .app-footer {
    padding: 2.5rem 3.5rem;
    text-align: center;
    border-top: 1px solid var(--border-card);
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

#smart-toll-calculator-pro .stcp-toast {
    position: fixed;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    background: #00E676;
    color: #000;
    padding: 0.8rem 1.5rem;
    border-radius: 50px;
    font-weight: 800;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 0.7rem;
    box-shadow: 0 10px 30px rgba(0, 230, 118, 0.3);
    z-index: 99999;
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    pointer-events: none;
}

#smart-toll-calculator-pro .stcp-toast.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

@media (max-width: 768px) {
    #smart-toll-calculator-pro { margin: 0; border-radius: 0; }
    
    #smart-toll-calculator-pro .app-header { 
        padding: 2rem 2.5rem; 
        display: flex;
        align-items: flex-start;
        justify-content: space-between;
    }
    #smart-toll-calculator-pro .calc-card { padding: 1.5rem; margin: 1rem; border-radius: 1rem; }
    #smart-toll-calculator-pro .result-area { padding: 0; margin: 1rem; }
    #smart-toll-calculator-pro .title-section h1 { font-size: 1.45rem; line-height: 1.25; }
    #smart-toll-calculator-pro .title-section p { margin-top: 0.8rem; font-size: 0.95rem; line-height: 1.5; }

    /* Vehicle Selector Stacked Vertically */
    #smart-toll-calculator-pro .vehicle-selector { flex-direction: column; gap: 10px; }
    #smart-toll-calculator-pro .v-label {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: 1.75rem 1rem;
        border-radius: 1rem;
        width: 100%;
        line-height: 1.4;
    }
    #smart-toll-calculator-pro .v-label i { margin-bottom: 0.6rem; font-size: 1.9rem; }
    #smart-toll-calculator-pro .v-label span:first-of-type { font-size: 1.1rem; font-weight: 700; }
    #smart-toll-calculator-pro .v-label span:last-of-type { font-size: 0.85rem; opacity: 0.75; }

    /* Buttons Full Width */
    #smart-toll-calculator-pro .action-buttons { flex-direction: column; gap: 1rem; margin-top: 2rem; }
    #smart-toll-calculator-pro .btn { width: 100%; padding: 1.1rem; font-size: 1.05rem; }

    /* Result Section Mobile - Premium Spacing */
    #smart-toll-calculator-pro .summary-card { 
        flex-direction: column; 
        text-align: center; 
        align-items: center; 
        gap: 2.5rem; 
        padding: 3.5rem 2rem; 
        box-shadow: 0 10px 30px var(--primary-glow); 
    }
    #smart-toll-calculator-pro .route-info h3 { font-size: 1.5rem; line-height: 1.3; margin-bottom: 0.75rem; }
    #smart-toll-calculator-pro .route-info p { font-size: 0.95rem; line-height: 1.4; }
    #smart-toll-calculator-pro .total-toll { text-align: center; width: 100%; }
    #smart-toll-calculator-pro .total-toll .amount { font-size: 4rem; text-shadow: 0 0 20px var(--primary-glow); }
    #smart-toll-calculator-pro .rfid-suggestion { justify-content: center; margin-top: 1rem; }

    /* Timeline Mobile Fixes */
    #smart-toll-calculator-pro .collapsed-content { padding: 1.5rem; }
    #smart-toll-calculator-pro .timeline-item { 
        display: flex;
        justify-content: space-between;
        align-items: center;
        gap: 10px;
        padding: 12px 0;
        border-bottom: 1px solid var(--border-card);
        position: relative;
    }
    #smart-toll-calculator-pro .timeline-item:last-child { border-bottom: none; }
    #smart-toll-calculator-pro .timeline-item::before { display: none; } /* Remove vertical line on mobile list */
    
    #smart-toll-calculator-pro .dot { margin: 0; flex-shrink: 0; }
    
    #smart-toll-calculator-pro .node-info { 
        flex: 1; 
        min-width: 0; 
        text-align: left;
    }
    #smart-toll-calculator-pro .node-info h4 { 
        white-space: nowrap; 
        overflow: hidden; 
        text-overflow: ellipsis;
        font-size: 1rem;
        margin: 0;
    }
    #smart-toll-calculator-pro .node-info span { font-size: 0.75rem; }

    #smart-toll-calculator-pro .segment-price { 
        white-space: nowrap; 
        flex-shrink: 0; 
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
        margin: 0;
    }

    /* Frequent Connections Grid (Mobile Only) */
    #smart-toll-calculator-pro .route-tags {
        display: grid !important;
        grid-template-columns: repeat(2, 1fr) !important;
        gap: 8px !important;
    }
    #smart-toll-calculator-pro .popular-route-btn {
        width: 100% !important;
        margin: 0 !important;
        padding: 0.7rem 0.4rem !important;
        font-size: 0.7rem !important;
        text-align: center;
        white-space: nowrap;
        overflow: hidden;
        text-overflow: ellipsis;
        border-radius: 0.75rem !important;
    }

    /* Mobile UX Feedback & Responsiveness */
    #smart-toll-calculator-pro .btn:active,
    #smart-toll-calculator-pro .popular-route-btn:active,
    #smart-toll-calculator-pro .v-label:active,
    #smart-toll-calculator-pro #theme-toggle:active,
    #smart-toll-calculator-pro .search-item:active {
        transform: scale(0.97) !important;
        opacity: 0.9;
        transition: transform 0.1s ease;
    }

    #smart-toll-calculator-pro * {
        -webkit-tap-highlight-color: transparent;
        touch-action: manipulation;
    }
}