:root {
    --lhpn-primary: #4f46e5;
    --lhpn-primary-hover: #4338ca;
    --lhpn-bg: #ffffff;
    --lhpn-surface: #f8fafc;
    --lhpn-text: #0f172a;
    --lhpn-text-muted: #64748b;
    --lhpn-border: #e2e8f0;
    --lhpn-border-focus: #818cf8;
    --lhpn-error: #ef4444;
    --lhpn-success-bg: #f0fdf4;
    --lhpn-success-text: #166534;
    --lhpn-success-border: #bbf7d0;
    --lhpn-warning-bg: #fffbeb;
    --lhpn-warning-text: #b45309;
    --lhpn-warning-border: #fde68a;
    --lhpn-danger-bg: #fef2f2;
    --lhpn-danger-text: #b91c1c;
    --lhpn-danger-border: #fecaca;
    --lhpn-card-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
    --lhpn-input-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --lhpn-radius-lg: 12px;
    --lhpn-radius-md: 8px;
    --lhpn-transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

.lhpn-container {
    max-width: 650px;
    margin: 2rem auto;
    font-family: inherit;
    background: var(--lhpn-bg);
    border-radius: 16px;
    box-shadow: var(--lhpn-card-shadow);
    padding: 32px;
    border: 1px solid var(--lhpn-border);
    position: relative;
    overflow: hidden;
}

/* Subtle gradient at the top */
.lhpn-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, #4f46e5, #ec4899);
}

.lhpn-header {
    text-align: center;
    margin-bottom: 30px;
}

.lhpn-header h3 {
    margin: 0 0 8px 0;
    font-size: 26px;
    color: var(--lhpn-text);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.lhpn-header p {
    margin: 0;
    color: var(--lhpn-text-muted);
    font-size: 15px;
    line-height: 1.5;
}

.lhpn-form {
    margin-bottom: 24px;
}

.lhpn-input-group {
    display: flex;
    gap: 12px;
    align-items: stretch;
}

.lhpn-select,
.lhpn-input-group input {
    padding: 14px 16px;
    border: 1px solid var(--lhpn-border);
    border-radius: var(--lhpn-radius-md);
    font-size: 15px;
    outline: none;
    transition: var(--lhpn-transition);
    background-color: var(--lhpn-surface);
    color: var(--lhpn-text);
    box-shadow: var(--lhpn-input-shadow);
}

.lhpn-select {
    flex: 0 0 110px;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 8px center;
    background-size: 16px;
    padding-left: 12px;
    padding-right: 28px;
}

.lhpn-input-group input {
    flex: 1;
    text-transform: uppercase;
    font-weight: 500;
}

.lhpn-input-group input::placeholder {
    text-transform: none;
    font-weight: normal;
    color: #94a3b8;
}

.lhpn-select:focus,
.lhpn-input-group input:focus {
    border-color: var(--lhpn-border-focus);
    background-color: var(--lhpn-bg);
    box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
}

.lhpn-input-group button {
    background: linear-gradient(135deg, var(--lhpn-primary), #6366f1);
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: var(--lhpn-radius-md);
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--lhpn-transition);
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 130px;
    box-shadow: 0 4px 6px -1px rgba(79, 70, 229, 0.2), 0 2px 4px -2px rgba(79, 70, 229, 0.2);
}

.lhpn-input-group button:hover:not(:disabled) {
    transform: translateY(-1px);
    box-shadow: 0 6px 8px -1px rgba(79, 70, 229, 0.3), 0 4px 6px -2px rgba(79, 70, 229, 0.3);
}

.lhpn-input-group button:active:not(:disabled) {
    transform: translateY(1px);
    box-shadow: 0 2px 4px -1px rgba(79, 70, 229, 0.2);
}

.lhpn-input-group button:disabled {
    background: #cbd5e1;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.lhpn-error-msg {
    margin-top: 12px;
    color: var(--lhpn-error);
    font-size: 14px;
    text-align: center;
    font-weight: 500;
    animation: fadeIn 0.3s ease;
}

/* Spinner */
.lhpn-spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: #fff;
    animation: lhpn-spin 0.8s linear infinite;
}

@keyframes lhpn-spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-4px);
    }

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

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(10px);
    }

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

/* Results Area */
.lhpn-result {
    animation: slideInUp 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.lhpn-success {
    background: var(--lhpn-success-bg);
    color: var(--lhpn-success-text);
    padding: 16px 20px;
    border-radius: var(--lhpn-radius-md);
    display: flex;
    align-items: center;
    gap: 12px;
    border: 1px solid var(--lhpn-success-border);
    font-size: 15px;
    line-height: 1.5;
}

.lhpn-icon {
    width: 28px;
    height: 28px;
    flex-shrink: 0;
}

.lhpn-plate-badge-success {
    background: var(--lhpn-success-text);
    color: white;
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    font-size: 14px;
    letter-spacing: 0.5px;
}

.lhpn-violations-count {
    background: var(--lhpn-warning-bg);
    color: var(--lhpn-warning-text);
    padding: 14px 20px;
    border-radius: var(--lhpn-radius-md);
    margin-bottom: 24px;
    border: 1px solid var(--lhpn-warning-border);
    text-align: center;
    font-size: 15px;
    box-shadow: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
}

.lhpn-violation-item {
    background: var(--lhpn-bg);
    border: 1px solid var(--lhpn-border);
    border-radius: var(--lhpn-radius-lg);
    padding: 24px;
    margin-bottom: 20px;
    transition: var(--lhpn-transition);
    position: relative;
    overflow: hidden;
}

.lhpn-violation-item::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 4px;
    background: var(--lhpn-error);
}

.lhpn-violation-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 12px 20px -8px rgba(0, 0, 0, 0.1);
    border-color: #cbd5e1;
}

.lhpn-v-row {
    display: flex;
    margin-bottom: 12px;
    font-size: 14.5px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--lhpn-surface);
}

.lhpn-v-row:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.lhpn-v-label {
    flex: 0 0 150px;
    color: var(--lhpn-text-muted);
    font-weight: 500;
}

.lhpn-v-val {
    flex: 1;
    color: var(--lhpn-text);
    font-weight: 600;
    line-height: 1.5;
}

.lhpn-plate-badge {
    background: #1e293b;
    color: #fff;
    padding: 3px 10px;
    border-radius: 6px;
    font-family: monospace;
    letter-spacing: 1px;
    font-size: 15px;
    display: inline-block;
}

.lhpn-time {
    color: var(--lhpn-error);
    font-weight: 700;
}

.lhpn-status {
    padding: 4px 10px;
    border-radius: 6px;
    font-size: 13.5px;
    display: inline-flex;
    align-items: center;
    font-weight: 600;
}

.lhpn-status-resolved {
    background: var(--lhpn-success-bg);
    color: var(--lhpn-success-text);
    border: 1px solid var(--lhpn-success-border);
}

.lhpn-status-unresolved {
    background: var(--lhpn-danger-bg);
    color: var(--lhpn-danger-text);
    border: 1px solid var(--lhpn-danger-border);
}

.lhpn-v-address {
    flex-direction: column;
    background: var(--lhpn-surface);
    padding: 12px;
    border-radius: var(--lhpn-radius-md);
    margin-top: 8px;
    border-bottom: none !important;
}

.lhpn-v-address .lhpn-v-label {
    margin-bottom: 6px;
    color: var(--lhpn-primary);
}

.lhpn-v-address em {
    font-style: normal;
    font-size: 13.5px;
    color: var(--lhpn-text-muted);
    display: block;
    margin-top: 4px;
    font-weight: 400;
}

/* Responsive Design */
@media (max-width: 576px) {
    .lhpn-container {
        padding: 24px 20px;
        margin: 1rem;
        border-radius: 12px;
    }

    .lhpn-header h3 {
        font-size: 22px;
    }

    .lhpn-input-group {
        flex-direction: column;
        gap: 12px;
    }

    .lhpn-select,
    .lhpn-input-group input,
    .lhpn-input-group button {
        width: 100%;
        flex: none;
    }

    .lhpn-v-row {
        flex-direction: column;
        padding-bottom: 10px;
        margin-bottom: 10px;
    }

    .lhpn-v-label {
        flex: none;
        margin-bottom: 4px;
        font-size: 13px;
    }

    .lhpn-violation-item {
        padding: 16px;
    }
}